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نویسندگان: ASHRAE
سری:
ISBN (شابک) : 1947192892, 9781947192898
ناشر: ASHRAE
سال نشر: 2021
تعداد صفحات: 1100
زبان: English
فرمت فایل : PDF (درصورت درخواست کاربر به PDF، EPUB یا AZW3 تبدیل می شود)
حجم فایل: 162 مگابایت
در صورت تبدیل فایل کتاب 2021 ASHRAE Handbook: Fundamentals به فرمت های PDF، EPUB، AZW3، MOBI و یا DJVU می توانید به پشتیبان اطلاع دهید تا فایل مورد نظر را تبدیل نمایند.
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I-P_F2021 FrontMatter.fm 2021 ASHRAE Handbook: Fundamentals --- MAIN MENU --- Home Dedicated To The Advancement Of The Profession And Its Allied Industries DISCLAIMER I-P Table of Contents CONTRIBUTORS ASHRAE TECHNICAL COMMITTEES, TASK GROUPS, AND TECHNICAL RESOURCE GROUPS ASHRAE Research: Improving the Quality of Life Preface CHAPTERS --- CHAPTER 01: PSYCHROMETRICS --- 1. Composition of Dry and Moist Air 2. U.S. Standard Atmosphere 3. Thermodynamic Properties of Moist Air 4. Thermodynamic Properties of Water at Saturation 5. Humidity Parameters Basic Parameters Humidity Parameters Involving Saturation 6. Perfect Gas Relationships for Dry and Moist Air 7. Thermodynamic Wet-Bulb and Dew-Point Temperature 8. Numerical Calculation of Moist Air Properties Moist Air Property Tables for Standard Pressure 9. Psychrometric Charts 10. Typical Air-Conditioning Processes Moist Air Sensible Heating or Cooling Moist Air Cooling and Dehumidification Adiabatic Mixing of Two Moist Airstreams Adiabatic Mixing of Water Injected into Moist Air Space Heat Absorption and Moist Air Moisture Gains 11. Transport Properties of Moist Air 12. Symbols References Bibliography Tables Table 1 Standard Atmospheric Data for Altitudes to 30,000 ft Table 2 Thermodynamic Properties of Saturated Moist and Dry Air at Standard Atmospheric Pressure, 14.696 psia Table 3 Thermodynamic Properties of Water at Saturation Table 4 Calculated Diffusion Coefficients for Water/Air at 14.696 psia Barometric Pressure Figures Fig. 1 ASHRAE Psychrometric Chart No. 1 Fig. 2 Schematic of Device for Heating Moist Air Fig. 3 Schematic Solution for Example 2 Fig. 4 Schematic of Device for Cooling Moist Air Fig. 5 Schematic Solution for Example 3 Fig. 6 Adiabatic Mixing of Two Moist Airstreams Fig. 7 Schematic Solution for Example 4 Fig. 8 Schematic Showing Injection of Water into Moist Air Fig. 9 Schematic Solution for Example 5 Fig. 10 Schematic of Air Conditioned Space Fig. 11 Schematic Solution for Example 6 Fig. 12 Viscosity of Moist Air Fig. 13 Thermal Conductivity of Moist Air ---CHAPTER 02: THERMODYNAMICS AND REFRIGERATION CYCLES--- 1. Thermodynamics 1.1 Stored Energy 1.2 Energy in Transition 1.3 First Law of Thermodynamics 1.4 Second Law of Thermodynamics 1.5 Thermodynamic Analysis of Refrigeration Cycles 1.6 Equations of State 1.7 Calculating Thermodynamic Properties Phase Equilibria for Multicomponent Systems 2. Compression Refrigeration Cycles 2.1 Carnot Cycle 2.2 Theoretical Single-Stage Cycle Using a Pure Refrigerant or Azeotropic Mixture 2.3 Lorenz Refrigeration Cycle 2.4 Theoretical Single-Stage Cycle Using Zeotropic Refrigerant Mixture 2.5 Multistage Vapor Compression Refrigeration Cycles 2.6 Actual Refrigeration Systems 3. Absorption Refrigeration Cycles 3.1 Ideal Thermal Cycle 3.2 Working-Fluid Phase Change Constraints Temperature Glide 3.3 Working Fluids 3.4 Effect of Fluid Properties on Cycle Performance 3.5 Absorption Cycle Representations 3.6 Conceptualizing the Cycle 3.7 Absorption Cycle Modeling Analysis and Performance Simulation Double-Effect Cycle 3.8 Ammonia/Water Absorption Cycles 4. Adsorption Refrigeration Systems 4.1 Symbols References Bibliography Tables Table 1 Thermodynamic Property Data for Example 2 Table 2 Thermodynamic Property Values for Example 4 Table 3 Measured and Computed Thermodynamic Properties of R-22 for Example 5 Table 4 Energy Transfers and Irreversibility Rates for Refrigeration System in Example 5 Table 5 Refrigerant/Absorbent Pairs Table 6 Assumptions for Single-Effect Water/Lithium Bromide Model (Figure 20) Table 7 Design Parameters and Operating Conditions for Single-Effect Water/Lithium Bromide Absorption Chiller Table 8 Simulation Results for Single-Effect Water/Lithium Bromide Absorption Chiller Table 9 Inputs and Assumptions for Double-Effect Water-Lithium Bromide Model (Figure 21) Table 10 State Point Data for Double-Effect Water/Lithium Bromide Cycle (Figure 21) Table 11 Inputs and Assumptions for Single-Effect Ammonia/Water Cycle (Figure 22) Table 12 State Point Data for Single-Effect Ammonia/Water Cycle (Figure 22) Figures Fig. 1 Energy Flows in General Thermodynamic System Fig. 2 Mixture of i and j Components in Constant-Pressure Container Fig. 3 Temperature-Concentration (T-x) Diagramfor Zeotropic Mixture Fig. 4 Azeotropic Behavior Shown on T-x Diagram Fig. 5 Carnot Refrigeration Cycle Fig. 6 Temperature-Entropy Diagram for Carnot Refrigeration Cycle of Example 1 Fig. 7 Carnot Vapor Compression Cycle Fig. 8 Theoretical Single-Stage Vapor Compression Refrigeration Cycle Fig. 9 Schematic p-h Diagram for Example 2 Fig. 10 Areas on T- s Diagram Representing Refrigerating Effect and Work Supplied for Theoretical Single-Stage Cycle Fig. 11 Processes of Lorenz Refrigeration Cycle Fig. 12 Areas on T-s Diagram Representing Refrigerating Effect and Work Supplied for Theoretical Single-Stage Cycle Using Zeotropic Mixture as Refrigerant Fig. 13 Schematic and Pressure-Enthalpy Diagram for Dual-Compression, Dual-Expansion Cycle of Example 4 Fig. 14 Schematic of Real, Direct-Expansion, Single-Stage Mechanical Vapor-Compression Refrigeration System Fig. 15 Pressure-Enthalpy Diagram of Actual System and Theoretical Single-Stage System Operating Between Same Inlet Air Temperatures tR and t0 Fig. 16 Thermal Cycles Fig. 17 Single-Effect Absorption Cycle Fig. 18 Double-Effect Absorption Cycle Fig. 19 Generic Triple-Effect Cycles Fig. 20 Single-Effect Water/Lithium Bromide Absorption Cycle Dühring Plot Fig. 21 Double-Effect Water/Lithium Bromide Absorption Cycle with State Points Fig. 22 Single-Effect Ammonia/Water Absorption Cycle --- CHAPTER 03: FLUID FLOW --- 1. Fluid Properties Density 2. Basic Relations of Fluid Dynamics Continuity in a Pipe or Duct Bernoulli Equation and Pressure Variation in Flow Direction Laminar Flow Turbulence 3. Basic Flow Processes Wall Friction Boundary Layer Flow Patterns with Separation Drag Forces on Bodies or Struts Nonisothermal Effects 4. Flow Analysis Generalized Bernoulli Equation Conduit Friction Valve, Fitting, and Transition Losses Control Valve Characterization for Liquids Incompressible Flow in Systems Flow Measurement Unsteady Flow Compressibility Compressible Conduit Flow Cavitation 5. Noise in Fluid Flow 6. Symbols References Bibliography Tables Table 1 Drag Coefficients Table 2 Effective Roughness of Conduit Surfaces Table 3 Fitting Loss Coefficients of Turbulent Flow Figures Fig. 1 Velocity Profiles and Gradients in Shear Flows Fig. 2 Dimensions for Steady, Fully Developed Laminar Flow Equations Fig. 3 Velocity Fluctuation at Point in Turbulent Flow Fig. 4 Velocity Profiles of Flow in Pipes Fig. 5 Pipe Factor for Flow in Conduits Fig. 6 Flow in Conduit Entrance Region Fig. 7 Boundary Layer Flow to Separation Fig. 8 Geometric Separation, Flow Development, and Loss in Flow Through Orifice Fig. 9 Examples of Geometric Separation Encountered in Flows in Conduits Fig. 10 Separation in Flow in Diffuser Fig. 11 Effect of Viscosity Variation on Velocity Profile of Laminar Flow in Pipe Fig. 12 Blower and Duct System for Example 1 Fig. 13 Relation Between Friction Factor and Reynolds Number Fig. 14 Diagram for Example 2 Fig. 15 Valve Action in Pipeline Fig. 16 Effect of Duct Length on Damper Action Fig. 17 Matching of Pump or Blower to System Fig. 18 Differential Pressure Flowmeters Fig. 19 Flowmeter Coefficients Fig. 20 Temporal Increase in Velocity Following Sudden Application of Pressure Fig. 21 Cavitation in Flows in Orifice or Valve --- CHAPTER 04: HEAT TRANSFER --- 1. Heat Transfer Processes Conduction Convection Radiation Combined Radiation and Convection Contact or Interface Resistance Heat Flux Overall Resistance and Heat Transfer Coefficient 2. Thermal Conduction One-Dimensional Steady-State Conduction Two- and Three-Dimensional Steady-State Conduction: Shape Factors Extended Surfaces Transient Conduction 3. Thermal Radiation Blackbody Radiation Actual Radiation Angle Factor Radiant Exchange Between Opaque Surfaces Radiation in Gases 4. Thermal Convection Forced Convection 5. Heat Exchangers Mean Temperature Difference Analysis NTU-Effectiveness (e) Analysis Plate Heat Exchangers Heat Exchanger Transients 6. Heat Transfer Augmentation Passive Techniques Active Techniques 7. Symbols Greek Subscripts References Bibliography Fins Heat Exchangers Heat Transfer, General Tables Table 1 Heat Transfer Coefficients by Convection Type Table 2 One-Dimensional Conduction Shape Factors Table 3 Multidimensional Conduction Shape Factors Table 4 Values of c1 and 1 in Equations (14) to (17) Table 5 Emissivities and Absorptivities of Some Surfaces Table 6 Emissivity of CO2 and Water Vapor in Air at 75°F Table 7 Emissivity of Moist Air and CO2 in Typical Room Table 8 Forced-Convection Correlations Table 9 Natural Convection Correlations Table 10 Equations for Computing Heat Exchanger Effectiveness, N = NTU Table 11 Single-Phase Heat Transfer and Pressure Drop Correlations for Plate Exchangers Table 12 Equations for Augmented Forced Convection (Single Phase) Table 13 Microchannel Dimensions Table 14 Active Heat Transfer Augmentation Techniques and Most Relevant Heat Transfer Modes Table 15 Worldwide Status of Active Techniques Table 16 Selected Studies on Mechanical Aids, Suction, and Injection Table 17 Selected Studies on Rotation Table 18 Selected Previous Work with EHD Enhancement of Single-Phase Heat Transfer Figures Fig. 1 (A) Conduction and (B) Convection Fig. 2 Interface Resistance Across Two Layers Fig. 3 Thermal Circuit Fig. 4 Thermal Circuit Diagram for Insulated Water Pipe Fig. 5 Efficiency of Annular Fins of Constant Thickness Fig. 6 Efficiency of Annular Fins with Constant Metal Area for Heat Flow Fig. 7 Efficiency of Several Types of Straight Fins Fig. 8 Efficiency of Four Types of Spines Fig. 9 Rectangular Tube Array Fig. 10 Hexagonal Tube Array Fig. 11 Transient Temperatures for Infinite Slab, m = 1/Bi Fig. 12 Transient Temperatures for Infinite Cylinder, m = 1/Bi Fig. 13 Transient Temperatures for Sphere, m = 1/Bi Fig. 14 Solid Cylinder Exposed to Fluid Fig. 15 Radiation Angle Factors for Various Geometries Fig. 16 Diagram for Example 8 Fig. 17 Diagrams for Example 9 Fig. 18 External Flow Boundary Layer Build-up (Vertical Scale Magnified) Fig. 19 Boundary Layer Build-up in Entrance Region of Tube or Channel Fig. 20 Typical Dimensionless Representation of Forced- Convection Heat Transfer Fig. 21 Heat Transfer Coefficient for Turbulent Flow of Water Inside Tubes Fig. 22 Regimes of Free, Forced, and Mixed Convection— Flow in Horizontal Tubes Fig. 23 Diagram for Example 12 Fig. 24 Cross Section of Double-Pipe Heat Exchanger in Example 13 Fig. 25 Plate Parameters Fig. 26 Overall Air-Side Thermal Resistance and Pressure Drop for One-Row Coils Fig. 27 Typical Tube-Side Enhancements Fig. 28 Turbulators for Fire-Tube Boilers Fig. 29 Enhanced Surfaces for Gases Fig. 30 Typical Refrigerant and Air-Side Flow Passages in Compact Automotive Microchannel Heat Exchanger Fig. 31 Microchannel Dimensions Fig. 32 Ratio of Heat Transfer Coefficient with EHD to Coefficient Without EHD as Function of Distance from Front of Module Fig. 33 Heat Transfer Coefficients (With and Without EHD) as Functions of Reynolds Number --- CHAPTER 05: TWO-PHASE FLOW --- 1. Boiling Boiling and Pool Boiling in Natural Convection Systems Maximum Heat Flux and Film Boiling Boiling/Evaporation in Tube Bundles Forced-Convection Evaporation in Tubes Boiling in Plate Heat Exchangers (PHEs) 2. Condensing Condensation on Inner Surface of Tubes Other Impurities 3. Pressure Drop Friedel Correlation Lockhart and Martinelli Correlation Grönnerud Correlation Müller-Steinhagen and Heck Correlation Wallis Correlation Recommendations Pressure Drop in Microchannels Pressure Drop in Plate Heat Exchangers 4. Symbols References Bibliography Tables Table 1 Equations for Natural Convection Boiling Heat Transfer Table 2 Correlations for Local Heat Transfer Coefficients in Horizontal Tube Bundles Table 3 Equations for Forced Convection Boiling in Tubes Table 4 Heat Transfer Coefficient/Nusselt Number Correlations for Film-Type Condensation Table 5 Constants in Equation (29d) for Different Void Fraction Correlations Table 6 Constant and Exponents in Correlation of Lee and Lee (2001) Figures Fig. 1 Characteristic Pool Boiling Curve Fig. 2 Effect of Surface Roughness on Temperature in Pool Boiling of Pentane Fig. 3 Correlation of Pool Boiling Data in Terms of Reduced Pressure Fig. 4 Boiling Heat Transfer Coefficients for Flooded Evaporator Fig. 5 Flow Regimes in Typical Smooth Horizontal Tube Evaporator Fig. 7 Film Boiling Correlation Fig. 8 Origin of Noncondensable Resistance Fig. 9 Qualitative Pressure Drop Characteristics of Two-Phase Flow Regime Fig. 10 Pressure Drop Characteristics of Two-Phase Flow: Variation of Two-Phase Multiplier with Lockhart-Martinelli Parameter Fig. 11 Schematic Flow Representation of a Typical Force-Fed Microchannel Heat Sink (FFMHS) Fig. 12 Thermal Performance Comparison of Different High-Heat-Flux Cooling Technologies Fig. 13 Scanning Electron Microscope Images of Various Nanostructures: (A) Silicon Nanopillars (Enright et al. 2012),(B) High-Aspect-Ratio Silicon Nanopillars (Enright et al. 2012), (C) Silicon Micropost-Pyramids with Silicon Nanograss onSurface (Chen et al. 2011), (D) CuO Nanoblades (Miljkovic et al. 2013), (E) Tobacco Mosaic Virus Template Nanostructure (McCarthy et al. 2012), (F) Zinc Oxide Nanowires (Miljkovic et al. 2013), (G) Boehmitized Aluminum (Kim et al. 2013) and(H) Carbon Nanotubes (Enright et al. 2014) --- CHAPTER 06 : MASS TRANSFER --- 1. Molecular Diffusion Fick’s Law Fick’s Law for Dilute Mixtures Fick’s Law for Mass Diffusion Through Solids or Stagnant Fluids (Stationary Media) Fick’s Law for Ideal Gases with Negligible Temperature Gradient Diffusion Coefficient Diffusion of One Gas Through a Second Stagnant Gas Equimolar Counterdiffusion Molecular Diffusion in Liquids and Solids 2. Convection of Mass Mass Transfer Coefficient Analogy Between Convective Heat and Mass Transfer Lewis Relation 3. Simultaneous Heat and Mass Transfer Between Water-Wetted Surfaces and Air Enthalpy Potential Basic Equations for Direct-Contact Equipment Air Washers Cooling Towers Cooling and Dehumidifying Coils 4. Symbols References Bibliography Tables Table 1 Mass Diffusivities for Gases in Air Table 2 Material Values for Example 4 Figures Fig. 1 Diffusion of Water Vapor Through Stagnant Air Fig. 2 Pressure Profiles for Diffusion of Water Vapor Through Stagnant Air Fig. 3 Equimolar Counterdiffusion Fig. 4 Composite Wall for Example 4 Fig. 5 Nomenclature for Convective Mass Transfer from External Surface at Location x Where Surface Is Impermeable to Gas A Fig. 6 Nomenclature for Convective Mass Transfer from Internal Surface Impermeable to Gas A Fig. 7 Water-Saturated Flat Plate in Flowing Airstream Fig. 8 Mass Transfer from Flat Plate Fig. 9 Vaporization and Absorption in Wetted-Wall Column Fig. 10 Mass Transfer from Single Cylinders in Crossflow Fig. 11 Mass Transfer from Single Spheres Fig. 12 Sensible Heat Transfer j-Factors for Parallel Plate Exchanger Fig. 13 Air Washer Spray Chamber Fig. 14 Air Washer Humidification Process on Psychrometric Chart Fig. 15 Graphical Solution for Air-State Path in Parallel-Flow Air Washer Fig. 16 Graphical Solution of dh/(hi – h) Fig. 17 Graphical Solution for Air-State Path in Dehumidifying Coil with Constant Refrigerant Temperature --- CHAPTER 07: FUNDAMENTALS OF CONTROL --- 1. GENERAL 1.1 Terminology 1.2 Types of Control Action Two-Position Action Modulating Control Combinations of Two-Position and Modulating 1.3 Classification of Control Components by Energy Source Computers for Automatic Control 2. CONTROL COMPONENTS 2.1 Control Devices Valves Dampers Pneumatic Positive (Pilot) Positioners 2.2 Sensors and Transmitters Temperature Sensors Humidity Sensors and Transmitters Pressure Transmitters and Transducers Flow Rate Sensors Indoor Air Quality Sensors Lighting Level Sensors Power Sensing and Transmission 2.3 Controllers Digital Controllers Electric/Electronic Controllers Pneumatic Receiver-Controllers Thermostats 2.4 Auxiliary Control Devices Relays Equipment Status Other Switches Time Switches Transducers Other Auxiliary Control Devices 3. COMMUNICATION NETWORKS FOR BUILDING AUTOMATION SYSTEMS 3.1 Communication Protocols 3.2 OSI Network Model 3.3 Network Structure BAS Three-Tier Network Architecture Connections Between BAS Networks and Other Computer Networks Transmission Media 3.4 Specifying Building Automation System Networks Communication Tasks 3.5 Approaches to Interoperability Standard Protocols Gateways and Interfaces 4. SPECIFYING BUILDING AUTOMATION SYSTEMS 5. COMMISSIONING 5.1 Tuning Tuning Proportional, PI, and PID Controllers Tuning Digital Controllers Computer Modeling of Control Systems 5.2 Codes and Standards References Bibliography Tables Table 1 Comparison of Fiber Optic Technology Table 2 Some Standard Communication Protocols Applicable to BAS Figures Fig. 1 Example of Feedback Control: Discharge Air Temperature Control Fig. 2 Block Diagram of Discharge Air Temperature Control Fig. 3 Process Subjected to Step Input Fig. 4 Two-Position Control Fig. 5 Proportional Control Showing Variations in Controlled Variable as Load Changes Fig. 6 Proportional plus Integral (PI) Control Fig. 7 Floating Control Showing Variations in Controlled Variable as Load Changes Fig. 8 Typical Three-Way Mixing and Diverting Globe Valves Fig. 9 Typical Single- and Double-Seated Two-Way Globe Valves Fig. 10 Typical Flow Characteristics of Valves Fig. 11 Typical Valve Authority Performance Curves for Linear Devices at Various Percentages of Total System Pressure Drop Fig. 12 Typical Multiblade Dampers Fig. 13 Characteristic Curves of Installed Dampers in an AMCA 5.3 Geometry Fig. 14 Inherent Curves for Partially Ducted and Louvered Dampers (RP-1157) Fig. 15 Inherent Curves for Ducted and Plenum-Mounted Dampers (RP-1157) Fig. 16 Dead-Band Thermostat Fig. 17 Electronic and Pneumatic Control Components Combined with Electronic-to-Pneumatic Transducer (EPT) Fig. 18 Retrofit of Existing Pneumatic Control with Electronic Sensors and Controllers Fig. 19 OSI Reference Model Fig. 20 Hierarchical Network for Three-Tier System Architecture Fig. 21 Response of Discharge Air Temperature to Step Change in Set Points at Various Proportional Constants with No Integral Action Fig. 22 Open-Loop Step Response Versus Time Fig. 23 Response of Discharge Air Temperature to Step Change in Set Points at Various Integral Constants with Fixed Proportional Constant --- CHAPTER 08: SOUND AND VIBRATION --- 1. Acoustical Design Objective 2. Characteristics of Sound Levels Sound Pressure and Sound Pressure Level Frequency Speed Wavelength Sound Power and Sound Power Level Sound Intensity and Sound Intensity Level Combining Sound Levels Resonances Absorption and Reflection of Sound Room Acoustics Acoustic Impedance 3. Measuring Sound Instrumentation Time Averaging Spectra and Analysis Bandwidths Sound Measurement Basics Measurement of Room Sound Pressure Level Measurement of Acoustic Intensity 4. Determining Sound Power Free-Field Method Reverberation Room Method Progressive Wave (In-Duct) Method Sound Intensity Method Measurement Bandwidths for Sound Power 5. Converting from Sound Power to Sound Pressure 6. Sound Transmission Paths Spreading Losses Direct Versus Reverberant Fields Airborne Transmission Ductborne Transmission Room-to-Room Transmission Structureborne Transmission Flanking Transmission 7. Typical Sources of Sound Source Strength Directivity of Sources Acoustic Nearfield 8. Controlling Sound Terminology Enclosures and Barriers Partitions Sound Attenuation in Ducts and Plenums Standards for Testing Duct Silencers 9. System Effects 10. Human Response to Sound Noise Predicting Human Response to Sound Sound Quality Loudness Acceptable Frequency Spectrum 11. Sound Rating Systems and Acoustical Design Goals A-Weighted Sound Level (dBA) Noise Criteria (NC) Method Room Criterion (RC) Method Criteria Selection Guidelines 12. Fundamentals of Vibration Single-Degree-of-Freedom Model Mechanical Impedance Natural Frequency Practical Application for Nonrigid Foundations 13. Vibration Measurement Basics 14. Symbols References Bibliography Tables Table 1 Typical Sound Pressures and Sound Pressure Levels Table 2 Examples of Sound Power Outputs and Sound Power Levels Table 3 Combining Two Sound Levels Table 4 Midband and Approximate Upper and Lower Cutoff Frequencies for Octave and 1/3 Octave Band Filters Table 5 A-Weighting for 1/3 Octave and Octave Bands Table 6 Combining Decibels to Determine Overall Sound Pressure Level Table 7 Guidelines for Determining Equipment Sound Levels in the Presence of Contaminating Background Sound Table 8 Subjective Effect of Changes in Sound Pressure Level, Broadband Sounds (Frequency 250 Hz) Figures Fig. 1 Curves Showing A- and C-Weighting Responses for Sound Level Meters Fig. 2 Sound Transmission Loss Spectra for Single Layers of Some Common Materials Fig. 3 Contour for Determining Partition’s STC Fig. 4 Free-Field Equal Loudness Contours for Pure Tones Fig. 5 Equal Loudness Contours for Relatively Narrow Bands of Random Noise Fig. 6 Frequencies at Which Various Types of Mechanical and Electrical Equipment Generally Control Sound Spectra Fig. 7 NC (Noise Criteria) Curves and Sample Spectrum (Curve with Symbols) Fig. 8 Single-Degree-of-Freedom System Fig. 9 Vibration Transmissibility T as Function of fd / fn Fig. 10 Effect of Mass on Transmitted Force Fig. 11 Two-Degrees-of-Freedom System Fig. 12 Transmissibility T as Function of fd/fn1 with k2/k1 = 2 and M2/M1 = 0.5 Fig. 13 Transmissibility T as Function of fd/fn1 with k2/k1 = 10 and M2/M1 = 40 --- CHAPTER 09: THERMAL COMFORT --- 1. Human Thermoregulation 2. Energy Balance 3. Thermal Exchanges with Environment Body Surface Area Sensible Heat Loss from Skin Evaporative Heat Loss from Skin Respiratory Losses Alternative Formulations Total Skin Heat Loss 4. Engineering Data and Measurements Metabolic Rate and Mechanical Efficiency Heat Transfer Coefficients Clothing Insulation and Permeation Efficiency Total Evaporative Heat Loss Environmental Parameters 5. Conditions for Thermal Comfort Thermal Complaints 6. Thermal Comfort and Task Performance 7. Thermal Nonuniform Conditions and Local Discomfort Asymmetric Thermal Radiation Draft Vertical Air Temperature Difference Warm or Cold Floors 8. Secondary Factors Affecting Comfort Day-to-Day Variations Age Adaptation Sex Seasonal and Circadian Rhythms 9. Prediction of Thermal Comfort Steady-State Energy Balance Two-Node Model Multisegment Thermal Physiology and Comfort Models Adaptive Models Zones of Comfort and Discomfort 10. Environmental Indices Effective Temperature Humid Operative Temperature Heat Stress Index Index of Skin Wettedness Wet-Bulb Globe Temperature Wet-Globe Temperature Wind Chill Index 11. Special Environments Infrared Heating Comfort Equations for Radiant Heating Personal Environmental Control (PEC) Systems Hot and Humid Environments Extremely Cold Environments 12. Symbols Codes and Standards References Bibliography Tables Table 1 Parameters Used to Describe Clothing Table 2 Relationships Between Clothing Parameters Table 3 Skin Heat Loss Equations Table 4 Typical Metabolic Heat Generation for Various Activities Table 5 Heart Rate and Oxygen Consumption at Different Activity Levels Table 6 Equations for Convection Heat Transfer Coefficients Table 7 Typical Insulation and Permeation Efficiency Values for Western Clothing Ensembles Table 8 Insulation and Permeability Values for a Selection of Non-Western Clothing Ensembles Table 9 Garment Insulation Values Table 10 Equations for Predicting Thermal Sensation Y of Men, Women, and Men and Women Combined Table 11 Model Parameters Table 12 Evaluation of Heat Stress Index Table 13 Equivalent Wind Chill Temperatures of Cold Environments Figures Fig. 1 Thermal Interaction of Human Body and Environment Fig. 2 Constant Skin Heat Loss Line and Its Relationship to toh and ET Fig. 3 Mean Value of Angle Factor Between Seated Person and Horizontal or Vertical Rectangle when Person Is Rotated Around Vertical Axis Fig. 4 Analytical Formulas for Calculating Angle Factor for Small Plane Element Fig. 5 ASHRAE Summer and Winter Comfort Zones Fig. 6 Air Speed to Offset Temperatures Above Warm-Temperature Boundaries of Figure 5 Fig. 7 Predicted Rate of Unsolicited Thermal Operating Complaints Fig. 8 Relative Performance of Office Work Performance versus Deviation from Optimal Comfort Temperature Tc Fig. 9 Percentage of People Expressing Discomfort Caused by Asymmetric Radiation Fig. 10 Percentage of People Dissatisfied as Function of Mean Air Velocity Fig. 11 Draft Conditions Dissatisfying 15% of Population (PD = 15%) Fig. 12 Percentage of Seated People Dissatisfied as Function of Air Temperature Difference Between Head and Ankles Fig. 13 Percentage of People Dissatisfied as Function of Floor Temperature Fig. 14 Air Velocities and Operative Temperatures at 50% rh Necessary for Comfort (PMV = 0) of Persons in Summer Clothing at Various Levels of Activity Fig. 15 Air Temperatures and Mean Radiant Temperatures Necessary for Comfort (PMV = 0) of Sedentary Persons in Summer Clothing at 50% rh Fig. 16 Predicted Percentage of Dissatisfied (PPD) as Function of Predicted Mean Vote (PMV) Fig. 17 Effect of Environmental Conditions on Physiological Variables Fig. 18 Effect of Thermal Environment on Discomfort Fig. 19 Effective Temperature ET and Skin Wettedness w Fig. 20 Recommended Heat Stress Exposure Limits for Heat Acclimatized Workers Fig. 21 Variation in Skin Reflection and Absorptivity for Blackbody Heat Sources Fig. 22 Comparing Thermal Inertia of Fat, Bone, Moist Muscle, and Excised Skin to That of Leather and Water Fig. 23 Thermal Inertias of Excised, Bloodless, and Normal Living Skin Fig. 24 Recommended Temperature Set Points for HVAC with PEC Systems and Energy Savings from Extending HVAC Temperature Set Points Fig. 25 Schematic Design of Heat Stress and Heat Disorders Fig. 26 Acclimatization to Heat Resulting from Daily Exposure of Five Subjects to Extremely Hot Room --- CHAPTER 10: INDOOR ENVIRONMENTAL HEALTH --- 1. Background 1.1 Health Sciences Relevant to Indoor Environment Epidemiology and Biostatistics Industrial, Occupational, and Environmental Medicine or Hygiene Microbiology Toxicology 1.2 Hazard Recognition, Analysis, and Control Hazard Control 2. Airborne Contaminants 2.1 Particles Industrial Environments Synthetic Vitreous Fibers Combustion Nuclei Particles in Nonindustrial Environments Bioaerosols 2.2 Gaseous Contaminants Industrial Environments Nonindustrial Environments 3. Physical Agents 3.1 Thermal Environment Range of Healthy Living Conditions Hypothermia Hyperthermia Seasonal Patterns Climate Change Increased Deaths in Heat Waves Effects of Thermal Environment on Specific Diseases Injury from Hot and Cold Surfaces 3.2 Electrical Hazards 3.3 Mechanical Energies Vibration Standard Limits Sound and Noise 3.4 Electromagnetic Radiation Ionizing Radiation Nonionizing Radiation 3.5 Ergonomics 3.6 Outdoor Air Ventilation and Health References Bibliography Tables Table 1 Selected Illnesses Related to Exposure in Buildings Table 2 OSHA Permissible Exposure Limits (PELs) for Particlesa Table 3 Primary and Secondary Standards for Particle Pollution Table 4 Pathogens with Potential for Airborne Transmission Table 5 Comparison of Indoor Environment Standards and Guidelines Table 6 Selected SVOCs Found in Indoor Environments Table 7 Indoor Concentrations and Body Burden of Selected Semivolatile Organic Compounds Table 8 Inorganic Gas Comparative Criteria Table 9 Approximate Surface Temperature Limits to Avoid Pain and Injury Table 10 Ratios of Acceptable to Threshold Vibration Levels Table 11 Energy, Wavelength, and Frequency Ranges for Electromagnetic Radiation Table 12 2015 Action Levels for Radon Concentration Indoors Figures Fig. 1 Related Human Sensory, Physiological, and Health Responses for Prolonged Exposure Fig. 2 Isotherms for Comfort, Discomfort, Physiological Strain, Effective Temperature (ET), and Heat Stroke Danger Threshold Fig. 3 Factors Affecting Acceptability of Building Vibration Fig. 4 Acceleration Perception Thresholds and Acceptability Limits for Horizontal Oscillations Fig. 5 Median Perception Thresholds to Horizontal (Solid Lines) and Vertical (Dashed Line) Vibrations Fig. 6 Mechanical Energy Spectrum Fig. 7 Electromagnetic Spectrum Fig. 8 Maximum Permissible Levels of Radio Frequency Radiation for Human Exposure --- CHAPTER 11: AIR CONTAMINANTS --- 1. Classes of Air Contaminants 2. Particulate Contaminants 2.1 Particulate Matter Solid Particles Liquid Particles Complex Particles Sizes of Airborne Particles Particle Size Distribution Units of Measurement Harmful Effects of Particulate Contaminants Measurement of Airborne Particles Typical Particle Levels Bioaerosols Controlling Exposures to Particulate Matter 3. Gaseous Contaminants Harmful Effects of Gaseous Contaminants Units of Measurement Measurement of Gaseous Contaminants 3.1 Volatile Organic Compounds Controlling Exposure to VOCs 3.2 Semivolatile Organic Compounds 3.3 Inorganic Gases Controlling Exposures to Inorganic Gases 4. Air Contaminants by Source 4.1 Outdoor Air Contaminants 4.2 Industrial Air Contaminants 4.3 Commercial, Institutional, and Residential Indoor Air Contaminants 4.4 Flammable Gases and Vapors 4.5 Combustible Dusts 4.6 Radioactive Air Contaminants Radon 4.7 Soil Gases References Bibliography Tables Table 1 Approximate Particle Sizes and Time to Settle 1 m Table 2 Relation of Screen Mesh to Sieve Opening Size Table 3 Common Molds on Water-Damaged Building Materials Table 4 Example Case of Airborne Fungi in Building and Outdoor Air Table 5 Major Chemical Families of Gaseous Air Contaminants Table 6 Characteristics of Selected Gaseous Air Contaminants Table 7 Gaseous Contaminant Sample Collection Techniques Table 8 Analytical Methods to Measure Gaseous Contaminant Concentration Table 9 Classification of Indoor Organic Contaminants by Volatility Table 10 VOCs Commonly Found in Buildings Table 11 Typical U.S. Outdoor Concentrations of Selected Gaseous Air Contaminants Table 12 National Ambient Air Quality Standards for the United States Table 13 Sources and Indoor and Outdoor Concentrations of Selected Indoor Contaminants Table 14 Flammable Limits of Some Gases and Vapors Figures Fig. 1 Typical Outdoor Aerosol Composition by Particle Size Fraction Fig. 2 Relative Deposition Efficiencies of Different-Sized Particles in the Three Main Regions of the Human Respiratory System, Calculated for Moderate Activity Level Fig. 3 Sizes of Indoor Particles Fig. 4 Typical Urban Outdoor Distributions of Ultrafine or Nuclei (n) Particles, Fine or Accumulation (a) Particles, and Coarse (c) Particles --- CHAPTER 12: ODORS --- 1. Odor Sources 2. Sense of Smell Olfactory Stimuli Anatomy and Physiology Olfactory Acuity 3. Factors Affecting Odor Perception Humidity and Temperature Sorption and Release of Odors Emotional Responses to Odors 4. Odor Sensation Attributes Detectability Intensity Character Hedonics 5. Dilution of Odors by Ventilation 6. Odor Concentration Analytical Measurement Odor Units 7. Olf Units References Bibliography Tables Table 1 Odor Thresholds, ACGIH TLVs, and TLV/Threshold Ratios of Selected Gaseous Air Pollutants Table 2 Examples of Category Scales Table 3 Sensory Pollution Load from Different Pollution Sources Figures Fig. 1 Standardized Function Relating Perceived Magnitude to Concentration of 1-Butanol Fig. 2 Labeled Magnitude Scale Fig. 3 Panelist Using Dravnieks Binary Dilution Olfactometer Fig. 4 Matching Functions Obtained with Dravnieks Olfactometer Fig. 5 Percentage of Dissatisfied Persons as a Function of Ventilation Rate per Standard Person (i.e., per Olf) --- CHAPTER 13: INDOOR ENVIRONMENTAL MODELING --- 1. Computational Fluid Dynamics Mathematical and Numerical Background Reynolds-Averaged Navier-Stokes (RANS) Approaches Large Eddy Simulation (LES) Direction Numerical Simulation (DNS) 1.1 Meshing for Computational Fluid Dynamics Structured Grids Unstructured Grids Grid Quality Immersed Boundary Grid Generation Grid Independence 1.2 Boundary Conditions for Computational Fluid Dynamics Inlet Boundary Conditions Outlet Boundary Conditions Wall/Surface Boundary Conditions Symmetry Surface Boundary Conditions Fixed Sources and Sinks Modeling Considerations 1.3 CFD Modeling Approaches Planning Dimensional Accuracy and Faithfulness to Details CFD Simulation Steps 1.4 Verification, Validation, and Reporting Results Verification Validation Reporting CFD Results 2. Multizone Network Airflow and Contaminant Transport Modeling 2.1 Multizone Airflow Modeling Theory Solution Techniques 2.2 Contaminant Transport Modeling Fundamentals Solution Techniques 2.3 Multizone Modeling Approaches Simulation Planning Steps 2.4 Verification and Validation Analytical Verification Intermodel Comparison Empirical Validation 2.5 Symbols References Bibliography Tables Table 1 Summary of Multizone Model Validation Reports Table 2 Leakage Values of Model Airflow Components Figures Fig. 1 (A) Grid Point Distribution and (B) Control Volume Around Grid Point P Fig. 2 Two-Dimensional CFD Structured Grid Model for Flow Through 90° Elbow Fig. 3 Block-Structured Grid for Two-Dimensional Flow Simulation Through 90° Elbow Connected to Rectangular Duct Fig. 4 Unstructured Grid for Two-Dimensional Meshing Scheme Flow Simulation Through 90° Elbow Connected to Rectangular Duct Fig. 5 Circle Meshing Fig. 6 Boundary Condition Locations Around Diffuser Used in Box Method Fig. 7 Prescribed Velocity Field Near Supply Opening Fig. 8 Simplified Boundary Conditions for Supply Diffuser Modeling for Square Diffuser Fig. 9 Typical Velocity Distribution in Near-Wall Region Fig. 10 Wall Surface Temperature Ts, Influenced by Conduction Tw , Radiation Trad , and Local Air Temperature TP Fig. 11 Combination CFD and BEPS Fig. 12 Duct with Symmetry Geometry Fig. 13 Airflow Path Diagram Fig. 14 Floor Plan of Living Area Level of Manufactured House Fig. 15 Schematic of Ventilation System and Envelope Leakage Fig. 16 Multizone Representation of First Floor Fig. 17 Multizone Representation of Duct work in Belly and Crawlspace Fig. 18 Test Simulation of Concentration of Tracer Gas Decay in Manufactured House 30 min After Injection Fig. 19 Measured and Predicted Air Change Rates for Wind Speeds less than 4.5 mph --- CHAPTER 14: CLIMATIC DESIGN INFORMATION --- 1. Climatic Design Conditions Annual Design Conditions Monthly Design Conditions Data Sources Calculation of Design Conditions Differences from Previously Published Design Conditions Applicability and Characteristics of Design Conditions 2. Calculating Clear-sky Solar Radiation Solar Constant and Extraterrestrial Solar Radiation Equation of Time and Solar Time Declination Sun Position Air Mass Clear-Sky Solar Radiation 3. Transposition to Receiving Surfaces of Various Orientations Solar Angles Related to Receiving Surfaces Calculation of Clear-Sky Solar Irradiance Incident On Receiving Surface 4. Generating Design-Day Data 5. Estimation of Degree-Days Monthly Degree-Days Annual Degree-Days 6. Representativeness of Data and Sources of Uncertainty Representativeness of Data Uncertainty from Variation in Length of Record Effects of Climate Change Episodes Exceeding the Design Dry-Bulb Temperature 7. Other Sources of Climatic Information Joint Frequency Tables of Psychrometric Conditions Degree Days and Climate Normals Typical Year Data Sets Sequences of Extreme Temperature and Humidity Durations Global Weather Data Source Web Page Observational Data Sets References Bibliography Tables Table 1 Design Conditions for Atlanta, GA, USA (see Table 1A for Nomenclature) Table 2 Approximate Astronomical Data for 21st Day of Each Month Table 3 Time Zones in United States and Canada Table 4 Surface Orientations and Azimuths, Measured from South Table 5 Ground Reflectance of Foreground Surfaces Table 6 Fraction of Daily Temperature Range Table 7 Input Sources for Design-Day Generation Table 8 Derived Hourly Temperatures for Atlanta, GA for July for 5% Design Conditions, °F Table 9 Locations Representing Various Climate Types Figures Fig. 1 Locations of Weather Stations Fig. 2 Motion of Earth around Sun Fig. 3 Solar Angles for Vertical and Horizontal Surfaces Fig. 4 Uncertainty versus Period Length for Various Dry-Bulb Temperatures, by Climate Type Fig. 5 Frequency and Duration of Episodes Exceeding Design Dry-Bulb Temperature for Indianapolis, IN --- CHAPTER 15: FENESTRATION --- 1. Fenestration Components 1.1 Glazing Units 1.2 Framing 1.3 Shading 2. Determining Fenestration Energy Flow 3. U-Factor (Thermal Transmittance) Comparison Between Area-Weighted and Length-Weighted Methods 3.1 Determining Fenestration U-Factors Center-of-Glass U-Factor Edge-of-Glass U-Factor Frame U-Factor Curtain Wall Construction 3.2 Surface and Cavity Heat Transfer Coefficients 3.3 Representative U-Factors for Doors 4. Solar Heat Gain and Visible Transmittance 4.1 Solar-Optical Properties of Glazing Optical Properties of Single Glazing Layers Optical Properties of Glazing Systems 4.2 Solar Heat Gain Coefficient Calculation of Solar Heat Gain Coefficient Diffuse Radiation Solar Gain Through Frame and Other Opaque Elements Solar Heat Gain Coefficient, Visible Transmittance, and Spectrally Averaged Solar-Optical Property Values Airflow Windows Skylights Glass Block Walls Plastic Materials for Glazing 4.3 Calculation of Solar Heat Gain Opaque Fenestration Elements 5. Shading and Fenestration Attachments 5.1 Shading Overhangs and Glazing Unit Recess: Horizontal and Vertical Projections 5.2 Fenestration Attachments Simplified Methodology Slat-Type Sunshades Drapery Roller Shades and Insect Screens 6. Visual and Thermal Controls Operational Effectiveness of Shading Devices Indoor Shading Devices Double Drapery 7. Air Leakage Infiltration Through Fenestration Indoor Air Movement 8. Daylighting 8.1 Daylight Prediction 8.2 Light Transmittance and Daylight Use 9. Selecting Fenestration 9.1 Annual Energy Performance Simplified Techniques for Rough Estimates of Fenestration Annual Energy Performance Simplified Residential Annual Energy Performance Ratings 9.2 Condensation Resistance 9.3 Occupant Comfort and Acceptance Sound Reduction Strength and Safety Life-Cycle Costs 9.4 Durability 9.5 Supply and Exhaust Airflow Windows 9.6 Codes and Standards National Fenestration Rating Council (NFRC) United States Energy Policy Act (EPAct) ICC’s 2015 International Energy Conservation Code ASHRAE/IES Standard 90.1-2016 ASHRAE/USGBC/IES Standard 189.1-2014 ICC’s 2015 International Green Construction Code™ Canadian Standards Association (CSA) Building Code of Australia/National Construction Code Complex Glazings and Window Coverings 9.7 Symbols References Bibliography Tables Table 1 Representative Fenestration Frame U-Factors in Btu/h· ft2· °F, Vertical Orientation Table 2 Indoor Surface Heat Transfer Coefficient hi in Btu/h· ft2· °F, Vertical Orientation (Still Air Conditions) Table 3 Air Space Coefficients for Horizontal Heat Flow Table 4 U-Factors for Various Fenestration Products in Btu/h· ft2· °F Table 5 Glazing U-Factors for Various Wind Speeds in Btu/h·ft2·°F Table 6 Design U-Factors of Swinging Doors in Btu/h·ft2·°F Table 7 Design U-Factors for Revolving Doors in Btu/h·ft2·°F Table 8 Design U-Factors for Double-Skin Steel Emergency Exit Doors in Btu/h· ft2· °F Table 9 Design U-Factors for Double-Skin Steel Sectional, Tilt-Up, and Aircraft Hangar Doors in Btu/h· ft2· °F Table 10 Visible Transmittance Tv, Solar Heat Gain Coefficient (SHGC), Solar Transmittance T , Front Reflectance Rf , Back Reflectance Rb, and Layer Absorptance A for Glazing and Window Systems Table 11 Solar Heat Gain Coefficients for Domed Horizontal Skylights Table 12 Performance Characteristics of Typical TDDs Table 13 Solar Heat Gain Coefficients for Standard Hollow Glass Block Wall Panels Table 14A IAC Values for Louvered Shades: Uncoated Single Glazings Table 14B IAC Values for Louvered Shades: Uncoated Double Glazings Table 14C IAC Values for Louvered Shades: Coated Double Glazings with 0.2 Low-e Table 14D IAC Values for Louvered Shades: Coated Double Glazings with 0.1 Low-e Table 14E IAC Values for Louvered Shades: Double Glazings with 0.05 Low-e Table 14F IAC Values for Louvered Shades: Triple Glazing Table 14G IAC Values for Draperies, Roller Shades, and Insect Screens Table 15 Summary of Environmental Control Capabilities of Draperies Table 16 Spectral Selectivity of Several Glazings Table 17 Sound Transmittance Loss for Various Types of Glass Figures Fig. 1 Construction Details of Typical Double-Glazing Unit Fig. 2 Various Framing Configurations for Residential Fenestration Fig. 3 Center-of-Glass U-Factor for Vertical Double- and Triple-Pane Glazing Units Fig. 4 Frame Widths for Standard Fenestration Units Fig. 5 Details of Stile-and-Rail Door Fig. 6 Optical Properties of a Single Glazing Layer Fig. 7 Transmittance and Reflectance of Glass Plate Fig. 8 Variations with Incident Angle of Solar-Optical Properties for (A) Clear 0.125 in. Glass, (B) Clear 0.25 in. Glass, and (C) 0.25 in. Typical Heat-Absorbing (Tinted) Glass Fig. 9 Normalized Solar Transmittance for Five Common Glass Substrates as Function of Incidence Angle in Degrees Fig. 10 Normalized Solar Transmittance, as Function of Incidence Angle in Degrees, for 10 Glazing Systems (Single-, Double-. and Triple-Pane) as Developed forSimple Window Model Fig. 11 Spectral Transmittances of Commercially Available Glazings Fig. 12 Spectral Transmittances and Reflectances of Strongly Spectrally Selective Commercially Available Glazings Fig. 13 Solar Spectrum, Human Eye Response Spectrum, Scaled Blackbody Radiation Spectrum, and Idealized Glazing Reflectance Spectrum Fig. 14 Demonstration of Two Spectrally Selective Glazing Concepts, Showing Ideal Spectral Transmittances for Glazings Intended for Hot and Cold Climates Fig. 15 Components of Solar Radiant Heat Gain with Double-Pane Fenestration, Including Both Frame and Glazing Contributions Fig. 16 Generalized Tubular Daylighting Device Fig. 17 Transmittance of Straight Tube (Light Pipe) as Function of Reflectivity and Aspect Ratio (Length/Diameter) Fig. 18 Instantaneous Heat Balance for Sunlit Glazing Material Fig. 19 Profile Angle for South-Facing Horizontal Projections Fig. 20 Vertical and Horizontal Projections and Related Profile Angles for Vertical Surface Containing Fenestration Fig. 21 Comparison of IAC and Solar Transmission Values from ASHWAT Model Versus Measurements Fig. 22 Geometry of Slat-Type Sunshades Fig. 23 Designation of Drapery Fabrics Fig. 24 Drapery Fabric Properties Fig. 25 Geometry of Drapery Fabrics Fig. 26 Noise Reduction Coefficient Versus Openness Factor for Draperies Fig. 27 Window-to-Wall Ratio Versus Annual Electricity Use in kWh/ft2·floor·year Fig. 28 Visible Transmittance Versus SHGC for Several Glazings with Different Spectral Selectivities Fig. 29 Visible Transmittance Versus SHGC at Various Spectral Selectivities Fig. 30 Temperature Distribution on Indoor Surfaces of Glazing Unit Fig. 31 Minimum Indoor Surface Temperatures Before Condensation Occurs Fig. 32 Minimum Condensation Resistance Requirements (th = 68°F) Fig. 33 Location of Fenestration Product Reveals and Blinds/Drapes and Their Effect on Condensation Resistance Fig. 34 Fenestration Effects on Thermal Comfort: Long-Wave Radiation, Solar Radiation, Convective Draft --- CHAPTER 16: VENTILATION AND INFILTRATION --- Sustainable Building Standards and Rating Systems 1. Basic Concepts and Terminology Ventilation and Infiltration Ventilation Air Forced-Air Distribution Systems Outdoor Air Fraction Room Air Movement Air Change Rate Time Constants Averaging Time-Varying Ventilation Rates Age of Air Air Change Effectiveness 2. Tracer Gas Measurements Decay or Growth Constant Concentration Constant Injection Multizone Air Change Measurement 3. Driving Mechanisms for Ventilation and Infiltration Stack Pressure Wind Pressure Mechanical Systems Combining Driving Forces Neutral Pressure Level Thermal Draft Coefficient 4. Indoor Air Quality Protection from Extraordinary Events 5. Thermal Loads Effect on Envelope Insulation Infiltration Degree-Days 6. Natural Ventilation Natural Ventilation Openings Ceiling Heights Required Flow for Indoor Temperature Control Airflow Through Large Intentional Openings Flow Caused by Wind Only Flow Caused by Thermal Forces Only Natural Ventilation Guidelines Hybrid Ventilation 7. Residential Air Leakage Envelope Leakage Measurement Airtightness Ratings Conversion Between Ratings Building Air Leakage Data Air Leakage of Building Components Leakage Distribution Multifamily Building Leakage Controlling Air Leakage 8. Residential Ventilation Shelter in Place Safe Havens 9. Residential IAQ Control Source Control Local Exhaust Whole-House Ventilation Air Distribution Selection Principles for Residential Ventilation Systems 10. Simplified Models of Residential Ventilation and Infiltration Empirical Models Multizone Models Single-Zone Models Superposition of Wind and Stack Effects Residential Calculation Examples Combining Residential Infiltration and Mechanical Ventilation Typical Practice 11. Commercial and Institutional Air Leakage Envelope Leakage Air Leakage Through Internal Partitions Air Leakage Through Exterior Doors Air Leakage Through Automatic Doors Air Exchange Through Air Curtains 12. Commercial and Institutional Ventilation Ventilation Rate Procedure Multiple Spaces Survey of Ventilation Rates in Office Buildings 13. Office Building Example Location Building Occupancy Infiltration Local Exhausts Ventilation 14. Symbols References Bibliography Tables Table 1 Continuous Exhaust Airflow Rates Table 2 Intermittent Exhaust Airflow Rates Table 3 Total Ventilation Air Requirements Table 4 Basic Model Stack Coefficient Cs Table 5 Local Shelter Classes Table 6 Basic Model Wind Coefficient Cw Table 7 Enhanced Model Wind Speed Multiplier G Table 8 Enhanced Model Stack and Wind Coefficients Table 9 Enhanced Model Shelter Factor s Table 10 Summary of Building Airtightness Data Table 11 Air Leakage Areas for Internal Partitions in Commercial Buildings (at 0.30 in. of water and CD = 0.65) Figures Fig. 1 Two-Space Building with Mechanical Ventilation,Infiltration, and Exfiltration Fig. 2 Simple All-Air Air-Handling Unit with Associated Airflows Fig. 3 Displacement Flow Within a Space Fig. 4 Entrainment Flow Within a Space Fig. 5 Underfloor Air Distribution to Occupied Space Above Fig. 6 Distribution of Indoor and Outdoor Pressures over Height of Building Fig. 7 Compartmentation Effect in Buildings Fig. 8 Increase in Airflow by Increasing Area of One Opening Fig. 9 Airflow Rate Versus Pressure Difference Data from Whole-House Pressurization Test Fig. 10 Envelope Leakage Measurements Fig. 11 Histogram of Infiltration Values forThen-New Construction Fig. 12 Histogram of Infiltration Values for Low-Income Housing Fig. 13 Air Leakage Rates of Elevator Shaft Walls Fig. 14 Air Leakage Rate of Door Versus Average Crack Width Fig. 15 Airflow Coefficient for Automatic Doors Fig. 16 Pressure Factor for Automatic Doors --- CHAPTER 17: RESIDENTIAL COOLING AND HEATING LOAD CALCULATIONS --- 1. Residential Features 2. Calculation Approach 3. Other Methods 4. Residential Heat Balance (RHB) Method 5. Residential Load Factor (RLF) Method 6. Common Data and Procedures General Guidelines Basic Relationships Design Conditions Building Data Load Components 7. Cooling Load Peak Load Computation Opaque Surfaces Slab Floors Surfaces Adjacent to Buffer Space Transparent Fenestration Surfaces Infiltration and Ventilation Internal Gain Air Distribution System: Heat Gain Total Latent Load Summary of RLF Cooling Load Equations 8. Heating Load Exterior Surfaces Above Grade Below-Grade and On-Grade Surfaces Surfaces Adjacent to Buffer Space Ventilation and Infiltration Humidification Pickup Load Summary of Heating Load Procedures 9. Load Calculation Example Solution 10. Symbols References Tables Table 1 RLF Limitations Table 2 Typical Fenestration Characteristics Table 3 Unit Leakage Areas Table 4 Evaluation of Exposed Surface Area Table 5 Typical IDF Values, cfm/in2 Table 6 Typical Duct Loss/Gain Factors Table 7 Opaque Surface Cooling Factor Coefficients Table 8 Roof Solar Absorptance roof Table 9 Peak Irradiance Equations Table 10 Peak Irradiance, Btu/h·ft2 Table 11 Exterior Attachment Transmission Table 12 Shade Line Factors (SLFs) Table 13 Fenestration Solar Load Factors FFs Table 14 Interior Attenuation Coefficients (IACcl) Table 15 Summary of RLF Cooling Load Equations Table 16 Summary of Heating Load Calculation Equations Table 17 Example House Characteristics Table 18 Example House Design Conditions Table 19 Example House Component Quantities Table 20 Example House Opaque Surface Factors Table 21 Example House Window Factors Table 22 Example House Envelope Loads Table 23 Example House Total Sensible Loads Figures Fig. 1 Example House --- CHAPTER 18: NONRESIDENTIAL COOLING AND HEATING LOAD CALCULATIONS --- 1. Cooling Load Calculation Principles 1.1 Terminology Heat Flow Rates Time Delay Effect 1.2 Cooling Load Calculation Methods Cooling Load Calculations in Practice 1.3 Data Assembly 2. Internal Heat Gains 2.1 People 2.2 Lighting Instantaneous Heat Gain from Lighting 2.3 Electric Motors Overloading or Underloading Radiation and Convection 2.4 Appliances Cooking Appliances Hospital and Laboratory Equipment Office Equipment 3. Infiltration and Moisture Migration Heat Gains 3.1 Infiltration Standard Air Volumes Heat Gain Calculations Using Standard Air Values Elevation Correction Examples 3.2 Latent Heat Gain from Moisture Diffusion 3.3 Other Latent Loads 4. Fenestration Heat Gain 4.1 Fenestration Direct Solar , Diffuse Solar , and Conductive Heat Gains 4.2 Exterior Shading 5. Heat Balance Method 5.1 Assumptions 5.2 Elements Outdoor-Face Heat Balance Wall Conduction Process Indoor-Face Heat Balance Using SHGC to Calculate Solar Heat Gain Air Heat Balance 5.3 General Zone for Load Calculation 5.4 Mathematical Description Conduction Process Heat Balance Equations Overall HB Iterative Solution 5.5 Input Required 6. Radiant Time Series (RTS) Method 6.1 Assumptions and Principles 6.2 Overview 6.3 RTS Procedure 6.4 Heat Gain Through Exterior Surfaces Sol-Air Temperature Calculating Conductive Heat Gain Using Conduction Time Series 6.5 Heat Gain Through Interior Surfaces Floors 6.6 Calculating Cooling Load 7. Heating Load Calculations 7.1 Heat Loss Calculations Outdoor Design Conditions Indoor Design Conditions Calculation of Transmission Heat Losses Infiltration 7.2 Heating Safety Factors and Load Allowances 7.3 Other Heating Considerations 8. System Heating and Cooling Load Effects 8.1 Zoning 8.2 Ventilation 8.3 Air Heat Transport Systems On/Off Control Systems Variable-Air-Volume Systems Constant-Air-Volume Reheat Systems Mixed Air Systems Heat Gain from Fans Duct Surface Heat Transfer Duct Leakage Ceiling Return Air Plenum Temperatures Ceiling Plenums with Ducted Returns Underfloor Air Distribution Systems Plenums in Load Calculations 8.4 Central Plant Piping Pumps 9. Example Cooling and Heating Load Calculations 9.1 Single-Room Example Room Characteristics Cooling Loads Using RTS Method 9.2 Single-Room Example Peak Heating Load 9.3 Whole-Building Example Design Process and Shell Building Definition Tenant Fit Design Process and Definition Room-by-Room Cooling and Heating Loads Conclusions 10. Previous Cooling Load Calculation Methods 11. Building Example Drawings References Bibliography Tables Table 1 Representative Rates at Which Heat and Moisture Are Given Off by Human Beings in Different States of Activity Table 2 Lighting Power Densities Using Space-by-Space Method Table 3 Lighting Heat Gain Parameters for Typical Operating Conditions Table 4A Minimum Nominal Full-Load Efficiency for 60 Hz NEMA General-Purpose Electric Motors (Subtype I) Rated 600 V or Less (Random Wound) Table 4B Minimum Average Full-Load Efficiency for Polyphase Small Electric Motors Table 5A Recommended Rates of Radiant and Convective Heat Gain from Unhooded Electric Appliances During Idle (Ready-to-Cook) Conditions Table 5B Recommended Rates of Radiant and Convective Heat Gain from Unhooded Electric Appliances during Cooking Conditions Table 5C Recommended Rates of Radiant Heat Gain from Hooded Electric Appliances During Idle (Ready-to-Cook) Conditions Table 5D Recommended Rates of Radiant Heat Gain from Hooded Gas Appliances during Idle (Ready-to-Cook) Conditions Table 5E Recommended Rates of Radiant Heat Gain from Hooded Solid-Fuel Appliances during Idle (Ready-to-Cook) Conditions Table 5F Recommended Rates of Radiant and Convective Heat Gain from Warewashing Equipment during Idle (Standby) or Washing Conditions Table 6 Recommended Heat Gain from Typical Medical Equipment Table 7 Recommended Heat Gain from Typical Laboratory Equipment Table 8A Recommended Heat Gain for Typical Desktop Computers Table 8B Recommended Heat Gain for Typical Laptops and Laptop Docking Station Table 8C Recommended Heat Gain for Typical Tablet PC Table 8D Recommended Heat Gain for Typical Monitors Table 9 Recommended Heat Gain for Typical Printers Table 10 Recommended Heat Gain for Miscellaneous Equipment Table 11 Recommended Load Factors for Various Types of Offices Table 12 Diversity Factor for Different Equipment Table 13 Single-Layer Glazing Data Produced by WINDOW 7.4.6 Table 14 Recommended Radiative/Convective Splits for Internal Heat Gains Table 15 Solar Absorptance Values of Various Surfaces Table 16 Wall Conduction Time Series (CTS) Table 17 Roof Conduction Time Series (CTS) Table 18 Thermal Properties and Code Numbers of Layers Used in Wall and Roof Descriptions for Tables 16 and 17 Table 19 Representative Nonsolar RTS Values for Light to Heavy Construction Table 20 Representative Solar RTS Values for Light to Heavy Construction Table 21 RTS Representative Zone Construction for Tables 19 and 20 Table 22 Average U-Factor for Basement Walls with Uniform Insulation Table 23 Average U-Factor for Basement Floors Table 24 Heat Loss Coefficient Fp of Slab Floor Construction Table 25 Common Sizing Calculations in Other Chapters Table 26 Summary of RTS Load Calculation Procedures Table 27 Monthly/Hourly 5% Design Temperatures for Hartsfield-Jackson Atlanta International Airport, °F Table 28 Cooling Load Component: Lighting, Btu/h Table 29A Conduction: Wall Component of Solar Irradiance (Month 7) Table 29B Conduction: Wall Component of Sol-Air Temperatures, Heat Input, Heat Gain, Cooling Load (Month 7) Table 30 Window Component of Heat Gain (No Blinds or Overhang) (Month7) Table 31 Window Component of Cooling Load (No Blinds or Overhang) (Month 7) Table 32 Window Component of Cooling Load (with Blinds, No Overhang) (Month 7) Table 33 Window Component of Cooling Load (with Blinds and Overhang) (Month 7) Table 34 Single-Room Example Cooling Load (July 3:00 PM) for ASHRAE Example Office Building, Atlanta, GA Table 35 Single-Room Example Peak Cooling Load (Sept. 5:00 PM) for ASHRAE Example Office Building, Atlanta, GA Table 36 Block Load Example: Envelope Area Summary, ft2 Table 37 Block Load Example—First Floor Loads for ASHRAE Example Office Building, Atlanta, GA Table 38 Block Load Example—Second Floor Loads for ASHRAE Example Office Building, Atlanta, GA Table 39 Block Load Example—Overall Building Loads for ASHRAE Example Office Building, Atlanta, GA Figures Fig. 1 Origin of Difference Between Magnitude of Instantaneous Heat Gain and Instantaneous Cooling Load Fig. 2 Thermal Storage Effect in Cooling Load from Lights Fig. 3 Lighting Heat Gain Parameters for Recessed Fluorescent Luminaire Without Lens Fig. 4 Office Equipment Load Factor Comparison Fig. 5 Schematic of Heat Balance Processes in Zone Fig. 6 Schematic of Wall Conduction Process Fig. 7 Schematic View of General Heat Balance Zone Fig. 8 Overview of Radiant Time Series Method Fig. 9 CTS for Light to Heavy Walls Fig. 10 CTS for Walls with Similar Mass and Increasing Insulation Fig. 11 RTS for Light to Heavy Construction Fig. 12 Heat Flow from Below-Grade Surface Fig. 13 Ground Temperature Amplitude Fig. 14 Below-Grade Parameters Fig. 15 Schematic Diagram of Typical Return Air Plenum Fig. 16 Single-Room Example Office Fig. 17 First Floor Shell and Core Plan Fig. 18 Second Floor Shell and Core Plan Fig. 19 East/West Elevations, Elevation Details, and Perimeter Section Fig. 20 First Floor Tenant Plan Fig. 21 Second Floor Tenant Plan Fig. 22 3D View --- CHAPTER 19: ENERGY ESTIMATING AND MODELING METHODS --- 1. General Considerations 1.1 Models and Approaches Forward (Classical) Approach Data-Driven (Inverse) Approach 1.2 Overall Modeling Strategies 1.3 Simulating Secondary and Primary Systems 1.4 History of Simulation Method Development 1.5 Using Energy Models Typical Applications Choosing Measures for Evaluation When to Use Energy Models Energy Modelers 1.6 Uncertainty in Modeling 1.7 Choosing an Analysis Method Selecting Energy Analysis Computer Programs 2. Degree-Day and Bin Methods 2.1 Degree-Day Method Variable-Base Degree-Day Method Sources of Degree-Day Data 2.2 Bin and Modified Bin Methods 3. Thermal Loads Modeling 3.1 Space Sensible Load Calculation Methods Heat Balance Method Weighting-Factor Method Comprehensive Room Transfer Function Thermal-Network Methods 3.2 Envelope Component Modeling Above-Grade Opaque Surfaces Below-Grade Opaque Surfaces Fenestration Infiltration 3.3 Inputs to Thermal Loads Models Choosing Climate Data Internal Heat Gains Occupant Behavior Thermal Zoning Strategies 4. HVAC Component Modeling 4.1 Modeling Strategies Empirical (Regression-Based) Models First-Principles Models 4.2 Terminal Components Terminal Units and Controls Underfloor Air Distribution Thermal Displacement Ventilation Radiant Heating and Cooling Systems 4.3 Secondary System Components Fans, Pumps, and Distribution Systems Heat and Mass Transfer Components Application to Cooling and Dehumidifying Coils 4.4 Primary System Components Boilers Chillers Cooling Tower Model Variable-Speed Vapor-Compression Heat Pump Model Ground-Coupled Systems 4.5 Modeling of System Controls 4.6 Integration of System Models 5. Low-Energy System Modeling 5.1 Natural and Hybrid Ventilation Natural Ventilation Hybrid Ventilation 5.2 Daylighting 5.3 Passive Heating 6. Data-Driven Modeling 6.1 Categories of Data-Driven Methods Empirical or “Black-Box” Approach Gray-Box Approach 6.2 Types of Data-Driven Models Steady-State Models Dynamic Models 6.3 Model Accuracy and Goodness of Fit 6.4 Examples Using Data-Driven Methods Modeling Utility Bill Data Neural Network Models 6.5 Model Selection 7. Model Calibration 7.1 Bayesian Analysis 7.2 Pattern-based Approach 7.3 Multiobjective Optimization 8. Validation and Testing 8.1 Methodological Basis Empirical Validation External Error Types Analytical Verification Combining Empirical, Analytical, and Comparative Techniques Testing Model Calibration Techniques Using Synthetic Data References Bibliography Tables Table 1 Sample Annual Bin Data Table 2 Calculation of Annual Heating Energy Consumption for Example 2 Table 3 Correlation Coefficients for Off-Design Relationships Table 4 Single-Variate Models Applied to Utility Billing Data Table 5 Capabilities of Different Forward and Data-Driven Modeling Methods Table 6 Calibration Methods and Techniques Table 7 ANSI/ASHRAE Standard 140 Validation Test Matrix Table 8 Validation Techniques Table 9 Types of Extrapolation Figures Fig. 1 Overall Modeling Strategy Fig. 2 Variation of Balance Point Temperature and Internal Gains for Typical House Fig. 3 Uncounted Ventilation Degree-Hours versus Counted Cooling Degree-Hours Fig. 4 Heat Pump Capacity and Building Load Fig. 5 Possible Part-Load Power Curves Fig. 6 Part-Load Curves for Typical Fan Operating Strategies Fig. 7 Fan Part-Load Curve Obtained from Measured Field Data under ASHRAE RP-823 Fig. 8 Psychrometric Schematic of Cooling Coil Processes Fig. 9 Example Boiler Model: Efficiency as Function of Part-Load Ratio Fig. 10 Example Boiler Model: Efficiency as Function of Part-Load Ratio and Entering Water Temperature Fig. 11 Schematic of Variable-Air-Volume System with Reheat Fig. 12 Algorithm for Calculating Performance of VAV with System Reheat Fig. 13 Split-Flux Method Fig. 14 Forward Ray-Tracing Method Fig. 15 Backward Ray-Tracing Method Fig. 16 Steady-State, Single-Variate Models for Modeling Energy Use in Residential and Commercial Buildings Fig. 17 Variable-Base Degree-Day Model Identification Using Electricity Utility Bills at Hospital Fig. 18 Neural Network Prediction of Whole-Building, Hourly Chilled-Water Consumption for Commercial Building Fig. 19 Validation Method Fig. 20 Calibration Cases Conceptual Flow --- CHAPTER 20: SPACE AIR DIFFUSION --- 1. Indoor Air Quality and Sustainability 2. Terminology Outlet Types and Characteristics 3. Principles of Jet Behavior Air Jet Fundamentals Isothermal Radial Flow Jets Nonisothermal Jets Nonisothermal Horizontal Free Jet Comparison of Free Jet to Attached Jet Air Curtain Units Multiple Jets Air Movement in Occupied Zone 4. Symbols References Bibliography Tables Table 1 Generic Values for Centerline Velocity Constant Kc3 a for Commercial Supply Outlets for Fully and Partially Mixed Systems, Except UFAD Figures Fig. 1 Classification of Air Diffusion Methods Fig. 2 Example Airflow Patterns of Outlet Group A1 Fig. 3 Example Airflow Patterns (Nonisothermal) of Outlet Group A1 Fig. 4 Example Airflow Patterns (Isothermal) of Outlet Group A2 Fig. 5 Example Airflow Patterns (Nonisothermal) of Outlet Group B AR Fig. 6 Example Airflow Patterns (Nonisothermal) of Outlet Group C Fig. 7 Example Airflow Patterns (Nonisothermal) of Outlet Group D (High Velocity) Fig. 8 Example Airflow Patterns (Nonisothermal) of Outlet Group D (Low Velocity) Fig. 9 Example Airflow Patterns (Nonisothermal) of Outlet Group E (High Velocity) Fig. 10 Example Airflow Patterns (Nonisothermal) of Outlet Group E (Low Velocity) Fig. 11 Zones of Expansion for Axial or Radial Air Jets Fig. 12 Zones of Expansion for Linear Air Jets Fig. 13 Cross-Sectional Velocity Profiles for Straight-Flow Turbulent Jets Fig. 14 Thermal Plume from Point Source Fig. 15 Schematic Diagram of Major Flow Elements in Room with Displacement Ventilation --- CHAPTER 21: DUCT DESIGN --- 1. Bernoulli Equation 1.1 Head and Pressure Static Pressure Velocity Pressure Total Pressure Pressure and Velocity Measurements 2. System Analysis 2.1 Pressure Changes in System 3. Fluid Resistance 3.1 Friction Losses Darcy and Colebrook Equations Roughness Factors Friction Chart Noncircular Ducts 3.2 Dynamic Losses Local Loss Coefficients Duct Fitting Database 3.3 Ductwork Sectional Losses Darcy-Weisbach Equation 4. Fan/System Interface Fan Inlet and Outlet Conditions Fan System Effect Coefficients 5. Mechanical Equipment Rooms Outdoor Air Intake and Exhaust Air Discharge Locations Equipment Room Locations 6. Duct Design 6.1 Design Considerations HVAC System Air Leakage Fire and Smoke Control Duct Insulation Physical Security Louvers Duct Shape Selection Testing and Balancing 6.2 Design Recommendations 6.3 Design Methods Noise Control Goals Design Method to Use 6.4 Industrial Exhaust Systems References Bibliography Tables Table 1 Duct Roughness Factors Table 2 Solution for Example 6 Table 3 Equivalent Rectangular Duct Dimensions for Equal Friction and Airflow Table 4 Equivalent Flat Oval Dimensions Table 5 Duct Fitting Codes Table 6 8 in. VAV Box Data Table 7 ED7-2 Loss Coefficients (see Figure 15) Table 8 Solution for Example 7 Table 9 Maximum Airflow of Round, Flat Oval and Rectangular Ducts as Function of Available Ceiling Space Table 10 Options for Selecting 90° Takeoff Table 11 Options for Selecting 45° Takeoff (Wye) Table 12 Recommended Maximum Airflow Velocities to Achieve Specified Acoustic Design Criteria Table 13 Guide for Selecting Low-Pressure System Friction Rate Table 14 Example 8, Equal Friction Design Table 15 Example 8, Static Regain Design Table 16 Static Regain Iteration Process for Section 4 Table 17 Summary of System Duct Sizes Table 18 System Unbalance Table 19 Total Pressure Loss Calculations by Sections for Example 9 Table 20 Loss Coefficient Summary by Sections for Example 9 Figures Fig. 1 Thermal Gravity Effect for Example 1 Fig. 2 Multiple Stacks for Example 2 Fig. 3 Illustrative 6-Path, 9-Section System Fig. 4 Single Stack with Fan for Examples 3 and 4 Fig. 5 Triple Stack System for Example 5 Fig. 6 Pressure Changes During Flow in Ducts Fig. 7 Pressure Loss Correction Factor for Flexible Duct Not Fully Extended Fig. 8 Diffuser Installation Suggestions Fig. 9 Friction Chart for Round Duct Fig. 10 Plot Illustrating Relative Resistance of Roughness Categories Fig. 11 VAV Box Loss Coefficient Plot Fig. 12 Deficient System Performance with System Effect Ignored Fig. 13 Establishment of Uniform Velocity Profile in Straight Fan Outlet Duct Fig. 14 Inlet Duct Connections Causing Inlet Spin Fig. 15 Fitting ED7-2 (Fan Inlet, Centrifugal Fan, SISW, with 4-Gore Elbow) Fig. 16 Comparison of Various Mechanical Equipment Room Locations Fig. 17 Duct Layout for Example 7 Fig. 18 Criteria for Louver Sizing Fig. 19 Relative Weight of Rectangular Duct to Round Spiral Duct Fig. 20 Maximum Airflow of Round, Flat Oval, and Rectangular Ducts as Function of Available Ceiling Space Fig. 21 Guidelines For Minimizing Regenerated Noise in Takeoff Fig. 22 Guidelines for Centrifugal Fan Installations Fig. 23 Guidelines for VAV Terminal Unit Installation Fig. 24 Economizer Duct System Shown Fig. 25 System Layout for Example 8 Fig. 26 Air Density for Example 8 Fig. 27 Sizing Section 2 for EF and SR Design Examples Fig. 28 EF Design: Sizing Sections 4, 6, and 8 Knowing Design Friction Rate (Section 4 Shown) Fig. 29 Metalworking Exhaust System for Example 9 Fig. 30 System Schematic with Section Numbers for Example 9 Fig. 31 Total Pressure Grade Line for Example 9 --- CHAPTER 22: PIPE DESIGN --- 1. Fundamentals 1.1 Codes and Standards 1.2 Design Considerations 1.3 General Pipe Systems Metallic Pipe Systems Nonmetallic (Plastic) Pipe Systems Special Systems 1.4 Design Equations Darcy-Weisbach Equation Hazen-Williams Equation Valve and Fitting Losses Losses in Multiple Fittings Calculating Pressure Losses Stress Calculations 1.5 Sizing Procedure 1.6 Pipe-Supporting Elements Hanger Spacing and Pipe Wall Thickness 1.7 Pipe Expansion and Flexibility 1.8 Pipe Bends and Loops L Bends Z Bends U Bends and Pipe Loops Expansion and Contraction Control of Other Materials Cold Springing of Pipe Analyzing Existing Piping Configurations 2. Pipe and Fitting Materials 2.1 Pipe Steel Pipe Copper Tube Ductile Iron and Cast Iron Nonmetallic (Plastic) 2.2 Fittings 2.3 Joining Methods Threading Soldering and Brazing Flared and Compression Joints Flanges Welding Integrally Reinforced Outlet Fittings Solvent Cement Rolled-Groove Joints Bell-and-Spigot Joints Press-Connect (Press Fit) Joints Push-Connect Joints Unions 2.4 Expansion Joints and Expansion Compensating Devices Packed Expansion Joints Packless Expansion Joints 3. Applications 3.1 Water Piping Flow Rate Limitations Noise Generation Erosion Allowances for Aging Water Hammer 3.2 Service Water Piping Plastic Pipe Procedure for Sizing Cold-Water Systems Hydronic System Piping Range of Usage of Pressure Drop Charts Air Separation Valve and Fitting Pressure Drop 3.3 Steam Piping Pipe Sizes Sizing Charts 3.4 Low-Pressure Steam Piping High-Pressure Steam Piping Use of Basic and Velocity Multiplier Charts 3.5 Steam Condensate Systems Two-Pipe Systems One-Pipe Systems 3.6 Gas Piping 3.7 Fuel Oil Piping Pipe Sizes for Heavy Oil References Bibliography Tables Table 1 Common Applications of Pipe, Fittings, and Valves for Heating and Air Conditioning Table 2 Manufacturers’ Recommendations^a,b for Plastic Materials Table 3 K Factors: Threaded Steel Pipe Fittings Table 4 K Factors: Flanged Welded Steel Pipe Fittings Table 5 Approximate Range of Variation for K Factors of Steel Fittings Table 6 Summary of K Values for Steel Ells, Reducers, and Expansions Table 7 Summary of Test Data for Loss Coefficients K for Steel Pipe Tees Table 8 Test Summary for Loss Coefficients K and Equivalent Loss Lengths Table 9 Test Summary for Loss Coefficients K of PVC Tees Table 10 Capacities of ASTM A36 Steel Threaded Rods Table 11 Suggested Hanger Spacing and Rod Size for Straight Horizontal Runs Table 12 Suggested Maximum Spacing Between Hangers/Support for PVC and CPVC Pipe Table 13 Thermal Expansion of Metal Pipe Table 14 Pipe Loop Design for A53 Grade B Carbon Steel Pipe Through 400°F Table 15 Allowable Stresses for Pipe and Tube Table 16 Steel Pipe Data Table 17 Copper Tube Data Table 18 Properties of Pipe Materials Table 19 Applicable Standards for Fittings Table 20 Internal Working Pressure for Copper Tube Joints Table 21 Piping System Design Maximum Flow Rate for Energy Conservation Table 22 Water Velocities Based on Type of Service Table 23 Maximum Water Velocity to Minimize Erosion Table 24 Proper Flow and Pressure Required During Flow for Different Fixtures Table 25 Demand Weights of Fixtures in Fixture Units Table 26 Allowable Number of 1 in. Flush Valves Served by Various Sizes of Water Pipe Table 27 Equivalent Length in Feet of Pipe for 90° Elbows Table 28 Iron and Copper Elbow Equivalents Table 29 Pressure Drops Used for Sizing Steam Pipe Table 30 Comparative Capacity of Steam Lines at Various Pitches for Steam and Condensate Flowing in Opposite Directions Table 31 Equivalent Length of Fittings to Be Addedto Pipe Run Table 32 Flow Rate of Steam in Schedule 40 Pipe Table 33 Steam Pipe Capacities for Low-Pressure Systems Table 34 Return Main and Riser Capacities for Low-Pressure Systems, lb/h Table 35 Vented Dry Condensate Return for Gravity Flow Based on Manning Equation Table 36 Vented Wet Condensate Return for Gravity Flow Based on Darcy-Weisbach Equation Table 37 Flow Rate for Dry-Closed Returns Table 38 Flash Steam from Steam Trap on Pressure Drop Table 39 Estimated Return Line Pressures Table 40 Maximum Capacity of Gas Pipe in Cubic Feet per Hour Table 41 Recommended Nominal Size for Fuel Oil Suction Lines from Tank to Pump (Residual Grades No. 5 and No. 6) Table 42 Recommended Nominal Size for Fuel Oil Suction Lines from Tank to Pump (Distillate Grades No. 1 and No. 2) Figures Fig. 1 Close-Coupled Test Configurations Fig. 2 Summary Plot of Effect of Close-Coupled Configurations for 2 in. Ells Fig. 3 Summary Plot of Effect of Close-Coupled Configurations for 4 in. Ells Fig. 4 Guided Cantilever Beam Fig. 5 Z Bend in Pipe Fig. 6 Multiplane Pipe System Fig. 7 Packed Slip Expansion Joint Fig. 8 Flexible Ball Joint Fig. 9 Demand Versus Fixture Units, Mixed System, High Part of Curve Fig. 10 Estimate Curves for Demand Load Fig. 11 Section of Figure 10 on Enlarged Scale Fig. 12 Pressure Losses in Disk-Type Water Meters Fig. 13 Variation of Pressure Loss with Flow Rate for Various Faucets and Cocks Fig. 14 Friction Loss for Water in Commercial Steel Pipe (Schedule 40) Fig. 15 Friction Loss for Water in Copper Tubing (Types K, L, M) Fig. 16 Friction Loss for Water in Plastic Pipe (Schedule 80) Fig. 17 Elbow Equivalents of Tees at Various Flow Conditions Fig. 18 Flow Rate and Velocity of Steam in Schedule 40 Pipe at Saturation Pressure of 0 psig Fig. 19A Flow Rate and Velocity of Steam in Schedule 40 Pipe at Saturation Pressure of 30 psig Fig. 19B Flow Rate and Velocity of Steam in Schedule 40 Pipe at Saturation Pressure of 50 psig Fig. 19C Flow Rate and Velocity of Steam in Schedule 40 Pipe at Saturation Pressure of 100 psig Fig. 19D Flow Rate and Velocity of Steam in Schedule 40 Pipe at Saturation Pressure of 150 psig Fig. 20 Velocity Multiplier Chart for Figure 18 Fig. 21 Types of Condensate Return Systems Fig. 22 Working Chart for Determining Percentageof Flash Steam (Quality) Fig. 23 Typical Oil Circulating Loop --- CHAPTER 23: INSULATION FOR MECHANICAL SYSTEMS --- 1. Design Objectives and Considerations Energy Conservation Economic Thickness Personnel Protection Condensation Control Freeze Prevention Noise Control Fire Safety Corrosion Under Insulation 2. Materials and Systems Categories of Insulation Materials Physical Properties of Insulation Materials Weather Protection Vapor Retarders 3. Installation Pipe Insulation Tanks, Vessels, and Equipment Ducts 4. Design Data Estimating Heat Loss and Gain Controlling Surface Temperatures 5. Project Specifications Standards References Tables Table 1 Minimum Duct Insulation R-Value, Cooling- and Heating-Only Supply Ducts and Return Ducts Table 2 Minimum Pipe Insulation Thickness, in. Table 3 Minimum Duct Insulation R-Value, Combined Heating and Cooling Supply Ducts and Return Ducts Table 4 Insulation Thickness Required to Prevent Surface Condensation Table 5 Design Weather Data for Condensation Control Table 6 Time to Cool Water to Freezing, h Table 7 Insertion Loss for Pipe Insulation Materials, dB Table 8 Performance Property Guide for Insulation Materials Table 9 Thermal Conductivities of Cylindrical Pipe Insulation at 55 and 75°F Table 10 Minimum Saddle Lengths for Use with Fibrous Glass Pipe Insulation Table 11 Minimum Saddle Lengths for Use with 2 lb/ft3 Polyisocyanurate Foam Insulation (0.5 to 3 in. thick) Table 12 Emittance Data of Commonly Used Materials Table 13 Inner and Outer Diameters of Standard Pipe Insulation Table 14 Inner and Outer Diameters of Standard Tubing Insulation Table 15 Inner and Outer Diameters of Standard Flexible Closed-Cell Pipe Insulation Table 16 Inner and Outer Diameters of Standard Flexible Closed-Cell Tubing Insulation Table 17 Heat Loss from Bare Steel Pipe to Still Air at 80°F, Btu/h· ft Table 18 Heat Loss from Bare Copper Tube to Still Air at 80°F, Btu/h·ft Figures Fig. 1 Determination of Economic Thickness of Insulation Fig. 2 Relative Humidity Histogram for Charlotte, NC Fig. 3 ASHRAE Psychrometric Chart No. 1 Fig. 4 Time to Freeze Nomenclature Fig. 5 Insertion Loss Versus Weight of Jacket Fig. 6 Insulating Pipe Hangers Fig. 7 R-Value Required to Prevent Condensation on Surface with Emittance ɛ = 0.1 Fig. 8 R-Value Required to Prevent Condensation on Surface with Emittance ɛ = 0.9 --- CHAPTER 24: AIRFLOW AROUND BUILDINGS --- 1. Flow Patterns Flow Patterns Around Isolated, Rectangular Block- Type Buildings Flow Patterns Around Building Groups 2. Wind Pressure on Buildings Approach Wind Speed Local Wind Pressure Coefficients Surface-Averaged Wall Pressures Roof Pressures Interference and Shielding Effects on Pressures 3. Sources of Wind Data Wind at Recording Stations Estimating Wind at Sites Remote from Recording Stations 4. Wind Effects on System Operation Natural and Mechanical Ventilation Minimizing Wind Effect on System Volume Flow Rate Chemical Hood Operation 5. Building Pressure Balance and Internal Flow Control Pressure Balance Internal Flow Control 6. Environmental Impacts of Building External Flow Pollutant Dispersion and Exhaust Reentrainment Pedestrian Wind Comfort and Safety Wind-Driven Rain on Buildings 7. Physical and Computational Modeling Physical Modeling Similarity Requirements Wind Simulation Facilities Designing Model Test Programs Computational Modeling 8. Symbols References Bibliography Tables Table 1 Atmospheric Boundary Layer Parameters Table 2 Typical Relationship of Hourly Wind Speed Umet to Annual Average Wind Speed Uannual Figures Fig. 1 Wind Flow Pattern Around High-Rise Building Slab Fig. 2 Wind Flow Pattern Around Isolated Building Fig. 3 Surface Flow Patterns for Normal and Oblique Winds Fig. 4 Flow Recirculation Regions Fig. 5 Buildings in (A) Converging and (B) Diverging Configuration Fig. 6 Amplification Factor K in Horizontal Plane at y = 2 m above Ground for Converging and Diverging Arrangement with H = 30 m and w = 75 m and 20 m Fig. 7 Flow Regimes Associated with Airflow over Building Arrays of Increasing H/W Fig. 8 Local Pressure Coefficients (Cp x 100) for High-Rise Building with Varying Wind Direction Fig. 9 Local Pressure Coefficients for Low-Rise Building with Varying Wind Direction Fig. 10 Surface-Averaged Wall Pressure Coefficients for High-Rise Buildings Fig. 11 Surface-Averaged Wall Pressure Coefficients for Low-Rise Buildings Fig. 12 Surface-Averaged Roof Pressure Coefficients for Tall Buildings Fig. 13 Local Roof Pressure Coefficients for Roof of Low-Rise Buildings Fig. 14 Frequency Distribution of Wind Speed and Direction Fig. 15 Sensitivity of System Volume to Locations of Building Openings, Intakes, and Exhausts Fig. 16 Intake and Exhaust Pressures on Exhaust Fan in Single-Zone Building Fig. 17 Effect of Wind-Assisted and Wind-Opposed Flow Fig. 18 Flow Patterns Around Rectangular Block Building ---CHAPTER 25: HEAT, AIR, AND MOISTURE CONTROL IN BUILDING ASSEMBLIES—FUNDAMENTALS --- 1. Fundamentals 1.1 Terminology and Symbols Heat Air Moisture 1.2 Hygrothermal Loads and Driving Forces Ambient Temperature and Humidity Indoor Temperature and Humidity Solar Radiation Exterior Condensation Wind-Driven Rain Construction Moisture Ground- and Surface Water Air Pressure Differentials 2. Heat Transfer 2.1 Steady-State Thermal Response Surface-to-Surface Thermal Resistance of a Flat Assembly Combined Convective and Radiative Surface Heat Transfer Heat Flow Across an Air Space Total Thermal Resistance of a Flat Building Assembly Thermal Transmittance of a Flat Building Assembly Interface Temperatures in a Flat Building Component Series and Parallel Heat Flow Paths Thermal Bridging and Thermal Performance of Multidimensional Construction Linear and Point Thermal Transmittances 2.2 Transient Thermal Response 3. Airflow Heat Flux with Airflow 4. Moisture Transfer 4.1 Moisture Storage in Building Materials 4.2 Moisture Flow Mechanisms Water Vapor Flow by Diffusion Water Vapor Flow by Air Movement Water Flow by Capillary Suction Liquid Flow at Low Moisture Content Transient Moisture Flow 5. Combined Heat, Air , and Moisture Transfer 6. Simplified Hygrothermal Design Calculations and Analyses 6.1 Surface Humidity and Condensation 6.2 Interstitial Condensation and Drying Dew-Point Method 7. Transient Computational Analysis 7.1 Criteria to Evaluate Hygrothermal Simulation Results Thermal Comfort Perceived Air Quality Human Health Durability of Finishes and Structure Energy Efficiency References Bibliography Figures Fig. 1 Hygrothermal Loads and Alternating Diurnal or Seasonal Directions Acting on Building Envelope Fig. 2 Solar Vapor Drive and Interstitial Condensation Fig. 3 Typical Wind-Driven Rain Rose for Open Ground Fig. 4 Measured Reduction in Catch Ratio Close to Façade of One-Story Building at Height of 6 ft Fig. 5 Heat Flux by Thermal Radiation and Combined Convection and Conduction Across Vertical or Horizontal Air Layer Fig. 6 Examples of Airflow Patterns Fig. 7 Sorption Isotherms for Porous Building Materials Fig. 8 Sorption Isotherm and Suction Curve for Autoclaved Aerated Concrete (AAC) Fig. 9 Capillary Rise in Hydrophilic Materials Fig. 10 Moisture Fluxes by Vapor Diffusion and Liquid Flow in Single Capillary of Exterior Wall under Winter Conditions --- CHAPTER 26: HEAT, AIR, AND MOISTURE CONTROL IN BUILDING ASSEMBLIES—MATERIAL PROPERTIES --- 1. Insulation Materials and Insulating Systems 1.1 Apparent Thermal Conductivity Influencing Conditions 1.2 Materials and Systems Glass Fiber and Mineral Wool Cellulose Fiber Plastic Foams Cellular Glass Capillary-Active Insulation Materials (CAIMs) Transparent Insulation Vacuum Insulation Panels Reflective Insulation Systems 2. Air Barriers 3. Water Vapor Retarders 4. Data Tables 4.1 Thermal Property Data 4.2 Surface Emissivity and Emittance Data 4.3 Thermal Resistance of Plane Air Spaces 4.4 Air Permeance Data 4.5 Water Vapor Permeance Data 4.6 Moisture Storage Data 4.7 Soils Data 4.8 Surface Film Coefficients/ Resistances 4.9 Codes and Standards References Bibliography Tables Table 1 Building and Insulating Materials: Design Values Table 2 Emissivity of Various Surfaces and Effective Emittances of Facing Air Spaces Table 3 Effective Thermal Resistance of Plane Air Spaces h·ft2·°F/Btu Table 4 Air Permeability of Different Materials Table 5 Typical Water Vapor Permeance and Permeability for Common Building Materials Table 6 Water Vapor Permeance at Various Relative Humidities and Capillary Water Absorption Coefficient Table 7 Sorption/Desorption Isotherms of Building Materials at Various Relative Humidities Table 8 Typical Apparent Thermal Conductivity Valuesfor Soils, Btu· in/h·ft2 ·°F Table 9 Typical Apparent Thermal Conductivity Valuesfor Rocks, Btu· in/h·ft2· °F Table 10 Surface Film Coefficients/Resistances Figures Fig. 1 Apparent Thermal Conductivity Versus Density of Several Thermal Insulations Used as Building Insulations Fig. 2 Variation of Apparent Thermal Conductivity with Fiber Diameter and Density Fig. 3 Working Principle of Capillary-Active Interior Insulation Fig. 4 Permeability of Wood-Based Sheathing Materials at Various Relative Humidities Fig. 5 Sorption/Desorption Isotherms, Cement Board Fig. 6 Trends of Apparent Thermal Conductivity of Moist Soils --- CHAPTER 27: HEAT, AIR , AND MOISTURE CONTROL IN BUILDING ASSEMBLIES—EXAMPLES --- 1. Heat Transfer 1.1 One-Dimensional Assembly U-Factor Calculation Wall Assembly U-Factor Roof Assembly U-Factor Attics Basement Walls and Floors 1.2 Two-Dimensional Assembly U-Factor Calculation Wood-Frame Walls Masonry Walls Constructions Containing Metal Zone Method of Calculation Modified Zone Method for Metal Stud Walls with Insulated Cavities Complex Assemblies Windows and Doors 2. Moisture Transport 2.1 Wall with Insulated Sheathing 2.2 Vapor Pressure Profile (Glaser or Dew-Point) Analysis Winter Wall Wetting Examples 3. Transient Hygrothermal Modeling 4. Air Movement Equivalent Permeance References Bibliography Figures Fig. 1 Structural Insulated Panel Assembly (Example 1) Fig. 2 Roof Assembly (Example 2) Fig. 3 (A) Wall Assembly for Example 3, with Equivalent Electrical Circuits: (B) Parallel Path and (C) Isothermal Planes Fig. 4 Insulated Concrete Block Wall (Example 4) Fig. 5 Wall Section and Equivalent Electrical Circuit (Example 5) Fig. 6 Modified Zone Factor for Calculating R-Value of Metal Stud Walls with Cavity Insulation Fig. 7 Corner Composed of Homogeneous Material Showing Locations of Isotherms Fig. 8 Insulating Material Installed on Conductive Material, Showing Temperature Anomaly (Point A) at Insulation Edge Fig. 9 Brick Veneer Shelf for Example 6 Fig. 10 Dew-Point Calculation in Wood-Framed Wall (Example 8) Fig. 11 Drying Wet Sheathing, Winter (Example 9) Fig. 12 Drying Wet Sheathing, Summer (Example 9) --- CHAPTER 28: COMBUSTION AND FUELS --- 1. Principles of Combustion Combustion Reactions Flammability Limits Ignition Temperature Combustion Modes Heating Value Altitude Compensation 2. Fuel Classification 3. Gaseous Fuels Types and Properties 4. Liquid Fuels Types of Fuel Oils Characteristics of Fuel Oils Types and Properties of Liquid Fuels for Engines 5. Solid Fuels Types of Coals Characteristics of Coal 6. Combustion Calculations Air Required for Combustion Theoretical CO2 Quantity of Flue Gas Produced Water Vapor and Dew Point of Flue Gas Sample Combustion Calculations 7. Efficiency Calculations Seasonal Efficiency 8. Combustion Considerations Air Pollution Portable Combustion Analyzers (PCAs) Condensation and Corrosion Abnormal Combustion Noise in Gas Appliances Soot References Bibliography Tables Table 1 Combustion Reactions of Common Fuel Constituents Table 2 Flammability Limits and Ignition Temperatures of Common Fuels in Fuel/Air Mixtures Table 3 Heating Values of Substances Occurring in Common Fuels Table 4 Propane/Air and Butane/Air Gas Mixtures Table 5 Components of Organic Portion of Municipal Solid Waste Table 6 Landfill Gas Composition Table 7 Typical Compounds and Concentrations in Biogasfrom Anaerobic Digester Table 8 Typical Compounds and Concentrations Found in Syngas from Thermal Gasification Table 9 Sulfur Content of Marketed Fuel Oils Table 10 Typical API Gravity, Density, and Higher Heating Value of Standard Grades of Fuel Oil Table 11 Classification of Coals by Ranka Table 12 Typical Ultimate Analyses for Coals Table 13 Approximate Air Requirements for Stoichiometric Combustion of Fuels by Category Table 14 Theoretical Air Requirements for Stoichiometric Combustion of Various Fuels Table 15 Approximate Maximum Theoretical (Stoichiometric) CO2 Values, and CO2 Values of Various Fuels with Different Percentages of Excess Air Table 16 NOx Emission Factors for Combustion Sources Figures Fig. 1 Altitude Effects on Gas Combustion Appliances Fig. 2 Approximate Viscosity of Fuel Oils Fig. 3 Water Vapor and Dew Point of Flue G Fig. 4 Theoretical Dew Points of Combustion Products of Industrial Fuels Fig. 5 Influence of Sulfur Oxides on Flue Gas Dew Point Fig. 6 Flue Gas Losses with Various Fuels Fig. 7 Feedback Loop Stability Model Defined by Baade (1978, 2004) --- CHAPTER 29: REFRIGERANTS --- 1. Refrigerant Properties Global Environmental Properties Physical Properties Electrical Properties Sound Velocity 2. Refrigerant Performance 3. Safety 4. Leak Detection Electronic Detection Bubble Method Pressure Change Methods UV Dye Method Ammonia Leaks 5. Compatibility with Construction Materials Metals Elastomers Plastics Additional Compatibility Reports References Bibliography Tables Table 1 Refrigerant Data and Safety Classifications Table 2 Data and Safety Classifications for Refrigerant Blends Table 3A Refrigerant Environmental Properties Table 3B Refrigerant Environmental Properties Table 4 Environmental Properties of Refrigerant Blends; based on Montreal Protocol Reporting ODP and IPCC AR4and AR5 GWP100 of Components Table 5 Physical Properties of Selected Refrigerantsa Table 6 Electrical Properties of Liquid Refrigerants Table 7 Electrical Properties of Refrigerant Vapors Table 8 Comparative Refrigerant Performance per Ton of Refrigeration Table 9 Swelling of Elastomers in Liquid Refrigerants at Room Temperature, % Linear Swell --- CHAPTER 30: THERMOPHYSICAL PROPERTIES OF REFRIGERANTS --- 1. Refrigerant 12 (dichlorodifluoromethane) Refrigerant 12 (Dichlorodifluoromethane) Properties of Saturated Liquid and Saturated Vapor 2. Refrigerant 22 (chlorodifluoromethane) Refrigerant 22 (Chlorodifluoromethane) Properties of Saturated Liquid and Saturated Vapor 3. Refrigerant 23 (trifluoromethane) Refrigerant 23 (Trifluoromethane) Properties of Saturated Liquid and Saturated Vapor 4. Refrigerant 32 (difluoromethane) Refrigerant 32 (Difluoromethane) Properties of Saturated Liquid and Saturated Vapor 5. Refrigerant 123 (2,2-dichloro-1,1,1-trifluoroethane) Refrigerant 123 (2,2-Dichloro-1,1,1-Trifluoroethane) Properties of Saturated Liquid and Saturated Vapor 6. Refrigerant 124 (2-chloro-1,1,1,2-tetrafluoroethane) Refrigerant 124 (2-Chloro-1,1,1,2-Tetrafluoroethane) Properties of Saturated Liquid and Saturated Vapor 7. Refrigerant 125 (pentafluoroethane) Refrigerant 125 (Pentafluoroethane) Properties of Saturated Liquid and Saturated Vapor 8. Refrigerant 134a (1,1,1,2-tetrafluoroethane) Refrigerant 134a (1,1,1,2-Tetrafluoroethane) Properties of Saturated Liquid and Saturated Vapor Refrigerant 134a Properties of Superheated Vapor 9. Refrigerant 143a (1,1,1-trifluoroethane) Refrigerant 143a (1,1,1-Trifluoroethane) Properties of Saturated Liquid and Saturated Vapor 10. Refrigerant 152a (1,1-difluoroethane) Refrigerant 152a (1,1-Difluoroethane) Properties of Saturated Liquid and Saturated Vapor 11. Refrigerant 245fa (1,1,1,3,3-pentafluoropropane) Refrigerant 245fa (1,1,1,3,3-Pentafluoropropane) Properties of Saturated Liquid and Saturated Vapor 12. Refrigerant 1233zd(E) (trans-1-chloro-3,3,3-trifluoroprop-1-ene) Refrigerant 1233zd(E) (trans-1-chloro-3,3,3-trifluoroprop-1-ene) Properties of Saturated Liquid and Saturated Vapor 13. Refrigerant 1234yf (2,3,3,3-tetrafluoroprop-1-ene) Refrigerant 1234yf (2,3,3,3-tetrafluoroprop-1-ene) Properties of Saturated Liquid and Saturated Vapor 14. Refrigerant 1234ze(E) (trans-1,3,3,3-tetrafluoropropene) Refrigerant 1234ze(E) (trans-1,3,3,3-tetrafluoropropene) Properties of Saturated Liquid and Saturated Vapor 15. Refrigerant 404A [R-125/143a/134a (44/52/4)] Refrigerant 404A [R-125/143a/134a (44/52/4)] Properties of Liquid on Bubble Line and Vapor on Dew Line 16. Refrigerant 407C [R-32/125/134a (23/25/52)] Refrigerant 407C [R-32/125/134a (23/25/52)] Properties of Liquid on Bubble Line and Vapor on Dew Line 17. Refrigerant 410A [R-32/125 (50/50)] Refrigerant 410A [R-32/125 (50/50)] Properties of Liquid on Bubble Line and Vapor on Dew Line 18. Refrigerant 507A [R-125/143a (50/50)] Refrigerant 507A [R-125/143a (50/50)] Properties of Saturated Liquid and Saturated Vapor 19. Refrigerant 717 (ammonia) Refrigerant 717 (Ammonia) Properties of Saturated Liquid and Saturated Vapor 20. Refrigerant 718 (water/steam) Refrigerant 718 (Water/Steam) Properties of Saturated Liquid and Saturated Vapor 21. Refrigerant 744 (carbon dioxide) Refrigerant 744 (Carbon Dioxide) Properties of Saturated Liquid and Saturated Vapor 22. Refrigerant 50 (methane) Refrigerant 50 (Methane) Properties of Saturated Liquid and Saturated Vapor Refrigerant 50 (Methane) Properties of Gas at 14.696 psia (one standard atmosphere) 23. Refrigerant 170 (ethane) Refrigerant 170 (Ethane) Properties of Saturated Liquid and Saturated Vapor 24. Refrigerant 290 (propane) Refrigerant 290 (Propane) Properties of Saturated Liquid and Saturated Vapor 25. Refrigerant 600 (n-butane) Refrigerant 600 (n-Butane) Properties of Saturated Liquid and Saturated Vapor 26. Refrigerant 600a (isobutane) Refrigerant 600a (Isobutane) Properties of Saturated Liquid and Saturated Vapor 27. Refrigerant 1150 (ethylene) Refrigerant 1150 (Ethylene) Properties of Saturated Liquid and Saturated Vapor 28. Refrigerant 1270 (propylene) Refrigerant 1270 (Propylene) Properties of Saturated Liquid and Saturated Vapor 29. Refrigerant 704 (helium) Refrigerant 704 (Helium) Properties of Saturated Liquid and Saturated Vapor Refrigerant 704 (Helium) Properties of Gas at 14.696 psia (one standard atmosphere) 30. Refrigerant 728 (nitrogen) Refrigerant 728 (Nitrogen) Properties of Saturated Liquid and Saturated Vapor Refrigerant 728 (Nitrogen) Properties of Gas at 14.696 psia (one standard atmosphere) 31. Refrigerant 729 (air) Refrigerant 729 (Air) Properties of Liquid on the Bubble Line and Vapor on the Dew Line Refrigerant 729 (Air) Properties of Gas at 14.696 psia (one standard atmosphere) 32. Refrigerant 732 (oxygen) Refrigerant 732 (Oxygen) Properties of Saturated Liquid and Saturated Vapor Refrigerant 732 (Oxygen) Properties of Gas at 14.696 psia (one standard atmosphere) 33. Refrigerant 740 (argon) Refrigerant 740 (Argon) Properties of Saturated Liquid and Saturated Vapor Refrigerant 740 (Argon) Properties of Gas at 14.696 psia (one standard atmosphere) 34. Ammonia/Water Specific Volume of Saturated Ammonia-Water Solutions, ft3/lb 35. Water/Lithium Bromide Refrigerant Temperature (t = °F) and Enthalpy (h = Btu/lb) of Lithium Bromide Solutions References Fig. 38 Specific Heat of Aqueous Lithium Bromide Solutions Fig. 39 Viscosity of Aqueous Solutions of Lithium Bromide Figures Fig. 1 Pressure-Enthalpy Diagram for Refrigerant 12 Fig. 2 Pressure-Enthalpy Diagram for Refrigerant 22 Fig. 3 Pressure-Enthalpy Diagram for Refrigerant 23 Fig. 4 Pressure-Enthalpy Diagram for Refrigerant 32 Fig. 5 Pressure-Enthalpy Diagram for Refrigerant 123 Fig. 6 Pressure-Enthalpy Diagram for Refrigerant 124 Fig. 7 Pressure-Enthalpy Diagram for Refrigerant 125 Fig. 8 Pressure-Enthalpy Diagram for Refrigerant 134a Fig. 9 Pressure-Enthalpy Diagram for Refrigerant 143a Fig. 10 Pressure-Enthalpy Diagram for Refrigerant 152a Fig. 11 Pressure-Enthalpy Diagram for Refrigerant 245fa Fig. 12 Pressure-Enthalpy Diagram for Refrigerant R-1233zd(E) Fig. 13 Pressure-Enthalpy Diagram for Refrigerant 1234yf Fig. 14 Pressure-Enthalpy Diagram for Refrigerant 1234ze(E) Fig. 15 Pressure-Enthalpy Diagram for Refrigerant 404A Fig. 16 Pressure-Enthalpy Diagram for Refrigerant 407C Fig. 17 Pressure-Enthalpy Diagram for Refrigerant 410A Fig. 18 Pressure-Enthalpy Diagram for Refrigerant 507A Fig. 19 Pressure-Enthalpy Diagram for Refrigerant 717 (Ammonia) Fig. 20 Pressure-Enthalpy Diagram for Refrigerant 718 (Water/Steam) Fig. 21 Pressure-Enthalpy Diagram for Refrigerant 744 (Carbon Dioxide) Fig. 22 Pressure-Enthalpy Diagram for Refrigerant 50 (Methane) Fig. 23 Pressure-Enthalpy Diagram for Refrigerant 170 (Ethane) Fig. 24 Pressure-Enthalpy Diagram for Refrigerant 290 (Propane) Fig. 25 Pressure-Enthalpy Diagram for Refrigerant 600 (n-Butane) Fig. 26 Pressure-Enthalpy Diagram for Refrigerant 600a (Isobutane) Fig. 27 Pressure-Enthalpy Diagram for Refrigerant 1150 (Ethylene) Fig. 28 Pressure-Enthalpy Diagram for Refrigerant 1270 (Propylene) Fig. 29 Pressure-Enthalpy Diagram for Refrigerant 704 (Helium) Fig. 30 Pressure-Enthalpy Diagram for Refrigerant 728 (Nitrogen) Fig. 31 Pressure-Enthalpy Diagram for Refrigerant 729 (Air) Fig. 32 Pressure-Enthalpy Diagram for Refrigerant 732 (Oxygen) Fig. 33 Pressure-Enthalpy Diagram for Refrigerant 740 (Argon) Fig. 34 Enthalpy-Concentration Diagram for Ammonia/Water Solutions Prepared by Kwang Kim and Keith Herold, Center for Environmental Energy Engineering, University of Maryland at College Park Fig. 35 Enthalpy-Concentration Diagram for Water/Lithium Bromide Solutions Fig. 36 Equilibrium Chart for Aqueous Lithium Bromide Solutions Fig. 37 Specific Gravity of Aqueous Solutions of Lithium Bromide Fig. 38 Specific Heat of Aqueous Lithium Bromide Solutions Fig. 39 Viscosity of Aqueous Solutions of Lithium Bromide --- CHAPTER 31: PHYSICAL PROPERTIES OF SECONDARY COOLANTS (BRINES) --- 1. Salt-Based Brines Physical Properties Corrosion Inhibition 2. Inhibited Glycols Physical Properties Corrosion Inhibition Service Considerations 3. Halocarbons 4. Nonhalocarbon, Nonaqueous Fluids References Bibliography Tables Table 1 Properties of Pure Calcium Chloridea Brines Table 2 Properties of Pure Sodium Chloridea Brines Table 3 Physical Properties of Ethylene Glycol and Propylene Glycol Table 4 Freezing and Boiling Points of Aqueous Solutions of Ethylene Glycol Table 5 Freezing and Boiling Points of Aqueous Solutions of Propylene Glycol Table 6 Density of Aqueous Solutions of Ethylene Glycol Table 7 Specific Heat of Aqueous Solutions of Ethylene Glycol Table 8 Thermal Conductivity of Aqueous Solutions of Ethylene Glycol Table 9 Viscosity of Aqueous Solutions of Ethylene Glycol Table 10 Density of Aqueous Solutions of an Industrially Inhibited Propylene Glycol Table 11 Specific Heat of Aqueous Solutions of Propylene Glycol Table 12 Thermal Conductivity of Aqueous Solutions of Propylene Glycol Table 13 Viscosity of Aqueous Solutions of Propylene Glycol Table 14 Properties of Polydimethylsiloxane Heat Transfer Fluid Table 15 Summary of Physical Properties of Polydimethylsiloxane Mixture and d-Limonene Table 16 Physical Properties of d-Limonene Figures Fig. 1 Specific Heat of Calcium Chloride Brines Fig. 2 Specific Gravity of Calcium Chloride Brines Fig. 3 Viscosity of Calcium Chloride Brines Fig. 4 Thermal Conductivity of Calcium Chloride Brines Fig. 5 Specific Heat of Sodium Chloride Brines Fig. 6 Specific Gravity of Sodium Chloride Brines Fig. 7 Viscosity of Sodium Chloride Brines Fig. 8 Thermal Conductivity of Sodium Chloride Brines Fig. 9 Density of Aqueous Solutions of Industrially Inhibited Ethylene Glycol (vol. %) Fig. 10 Specific Heat of Aqueous Solutions of Industrially Inhibited Ethylene Glycol (vol. %) Fig. 11 Thermal Conductivity of Aqueous Solutions of Industrially Inhibited Ethylene Glycol (vol. %) Fig. 12 Viscosity of Aqueous Solutions of Industrially Inhibited Ethylene Glycol (vol. %) Fig. 13 Density of Aqueous Solutions of Industrially Inhibited Propylene Glycol (vol.%) Fig. 14 Specific Heat of Aqueous Solutions of Industrially Inhibited Propylene Glycol (vol.%) Fig. 15 Thermal Conductivity of Aqueous Solutions of Industrially Inhibited Propylene Glycol (vol.%) Fig. 16 Viscosity of Aqueous Solutions of Industrially Inhibited Propylene Glycol (vol.%) --- CHAPTER 32: SORBENTS AND DESICCANTS --- 1. Desiccant Applications 2. Desiccant Cycle 3. Types of Desiccants Liquid Absorbents Solid Adsorbents 4. Desiccant Isotherms 5. Desiccant Life 6. Cosorption of Water Vapor and Indoor Air Contaminants References Bibliography Tables Table 1 Vapor Pressures and Dew-Point Temperatures Corresponding to Different Relative Humidities at 70°F Figures Fig. 1 Desiccant Water Vapor Pressure as Function of Moisture Content Fig. 2 Desiccant Water Vapor Pressure as Function of Desiccant Moisture Content and Temperature Fig. 3 Desiccant Cycle Fig. 4 Surface Vapor Pressure of Water/Triethylene Glycol Solutions Fig. 5 Surface Vapor Pressure of Water/Lithium Chloride Solutions Fig. 6 Adsorption and Structural Characteristics of Some Experimental Silica Gels Fig. 7 Sorption Isotherms of Various Desiccants --- CHAPTER 33: PHYSICAL PROPERTIES OF MATERIALS --- REFERENCES Tables Table 1 Properties of Vapor Table 2 Properties of Liquids Table 3 Properties of Solids --- CHAPTER 34: ENERGY RESOURCES --- 1. Characteristics of Energy and Energy Resource Forms Fossil Fuels and Electricity Forms of On-Site Energy Nonrenewable and Renewable Energy Resources Environmental Considerations 1.1 On-Site Energy/Energy Resource Relationships Quantifiable Relationships Intangible Relationships 1.2 Summary 2. Energy Resource Planning 2.1 Integrated Resource Planning (IRP) 2.2 Tradable Emission Credits 3. Overview of Global Energy Resources 3.1 World Energy Resources Production Reserves Consumption 3.2 Carbon Emissions 3.3 U.S. Energy Use Per Capita Energy Consumption Projected Overall Energy Consumption Outlook Summary 3.4 U.S. Agencies and Associations References Bibliography Figures Fig. 1 Energy Production Trends: 2004-2014 Fig. 2 World Primary Energy Production by Resource: 2004 Versus 2014 Fig. 3 World Crude Oil Reserves: 2015 Fig. 4 World Natural Gas Reserves: 2015 Fig. 5 World Recoverable Coal Reserves: 2015 Fig. 6 World Petroleum Consumption: 2015 Fig. 7 World Natural Gas Consumption: 2014 Fig. 8 World Coal Consumption: 2014 Fig. 9 Coal Consumption in United States, China, and India, 1980-2014 Fig. 10 World Electricity Generation by Resource: 2002 and 2012 Fig. 11 World Electricity Generation 2014 Fig. 12 Per Capita Energy Consumption by Selected Countries: 2011 Fig. 13 World Carbon Emissions Fig. 14 Per Capita United States Energy Consumption Fig. 15 Projected World Energy Consumption by Resource Fig. 16 Projected Total U.S. Energy Consumption by End-Use Sector Fig. 17 Projected Total U.S. Energy Consumption by Resource --- CHAPTER 35: SUSTAINABILITY --- 1. Definition 2. Characteristics of Sustainability Sustainability Addresses the Future Sustainability Has Many Contributors Sustainability Is Comprehensive Technology Plays Only a Partial Role 3. Factors Impacting Sustainability 4. Primary HVAC&R Considerations in Sustainable Design Energy Resource Availability Fresh Water Supply Effective and Efficient Use of Energy Resources and Water Material Resource Availability and Management Embodied Energy Air, Noise, and Water Pollution Solid and Liquid Waste Disposal 5. Factors Driving Sustainability into Design Practice Climate Change Regulatory Environment Evolving Standards of Care Changing Design Process Other Opportunities 6. Designing for Effective Energy Resource Use Energy Ethic: Resource Conservation Design Principles Energy and Power Simplicity Self-Imposed Budgets Design Process for Energy-Efficient Projects Building Energy Use Elements References Bibliography Tables Table 1 Example Benchmark and Energy Targets for University Research Laboratory Figures Fig. 1 Cooling Tower Noise Barrier Fig. 2 Effect of Montreal Protocol on Global Chlorofluorocarbon (CFC) Production Fig. 3 Electricity Generation by Fuel, 1980–2030 --- CHAPTER 36: CLIMATE CHANGE --- 1. Overview of Climate Science Climate vs Weather Global Signatures of Climate Change Natural and Human Drivers of Climate Change Causes of Observed Global Warming Climate Change in the Distant Past Feedbacks in the Climate Systems Changes in Climate System Related to Recent Global Warming Observed Changes in Global Climate Conditions Station-level Trend Data Future Changes in Climate Projected Climatic Information for Use in Building Design and Analysis Using Recent Measured Data Summary 2. Mitigating Climate Change Reduce Carbon Emissions by Design and Construction Perform Deep Energy Retrofits of Existing Buildings Reduce Carbon Emissions from Building Operations Renewable Energy Sources (RES) and Building Electrification Cost of Avoiding GHG Emissions Refrigerants and Fluorinated Gases (F-Gases) Geoengineering Technologies Summary 3. Adapting to Climate Change An ASHRAE Framework for Risk-Aware Practice Adaptation and Related Terms Chronic vs Acute Impacts of Climate Change Impacts on Envelope-Driven Loads Impacts on HVAC Systems Impacts on Indoor Air Quality Operational Management and Design for Smoke Migration Risk from Wildfires Existing Professional Activities Design Opportunities and Strategies Resources for Adaptation Existing ASHRAE Resources 4. Conclusion 5. Glossary References Tables Table 1 System of Likelihood Terms Corresponding to Probabilities from Fourth National Climate Assessment (NCA4) and IPCC’s Fifth Assessment Report (AR5) (IPCC 2014b; USGCRP 2017) Table 2 New source generation costs when compared to existing coal generation (Gillingham and Stock 2018) Table 3 Static costs of policies based on a compilation of economic studies (Gillingham and Stock 2018) Table 4 Refrigerant Environmental Properties. Atmospheric lifetime, ODP and GWP100 from Table A-1 of (Fahey et al. 2018) except where indicated Figures Fig. 1 Globally averaged surface temperature anomalies by decade from 1880-1889 (“1880s”) to 2010-2019 (“2010s”) (Zhang et al. 2019). Reference period is 1901-1960 Fig. 2 Global mean energy budget of Earth under presentday climate conditions. Numbers state magnitudes of the individual energy fluxes in watts per square meter (W/m2) averaged over Earth’s surface, adjusted within their uncertainty ranges to balance the energy budgets of the atmosphere and the surface. Numbers in parentheses attached to the energy fluxes cover the range of values in line with observational constraints. Fluxes shown include those resulting from feedbacks. Top of Atmosphere (TOA) reflected solar values given here are based on observations 2001–2010; TOA outgoing longwave is based on 2005–2010 observations. (Figure 2-11, IPCC 2013). Fig. 3 Comparison of observed global mean temperature anomalies from three observational datasets to the fifth Coupled Model Intercomparison Project (CMIP5) climate model historical experiments using: (a) anthropogenic and natural forcings combined, or (b) natural forcings only (Knutson et al. 2017) Fig. 4 Simplified diagram of the global carbon cycle. Numbers denote reservoir mass, also called \" carbon stocks \" in Pg C (1 Pg C = 1015 g C) and annual carbon exchange fluxes (in Pg C / yr ) between the atmosphere and its two major sinks, the land and ocean Fig. 5 Surface temperature change (in °F) for the period 1986–2015 relative to 1901–1960 from the NOAA National Centers for Environmental Information’s (NCEI) surface temperature product (USGCRP 2017). Similar, interactive maps can be found at www.ncdc.noaa.gov/cag /global/mapping Fig. 6 ASHRAE climate zone changes between 1980-1999 and 2000-2019 Fig. 7 Change in a metric of extreme precipitation by regions used in NCA4(USGCRP 2017) Fig. 8 Projected change in heating degree days by the mid-21st century (2036-2065) relative to 1976-2005 under a high emissions scenario (RPC 8.5) Fig. 9 Projected change in cooling degree days by the mid- 21st century (2036-2065) relative to 1976-2005 under a high emissions scenario (RPC 8.5) Fig. 10 CMIP5 multi-model mean geographical changes (relative to a 1981–2000 Fig. 11 Projected change in the annual highest maximum temperature by the mid-21st century (2036-2065) relative to 1976-2005 under a high emissions scenario (RPC 8.5) Fig. 12 Projected change in the annual lowest daily minimum temperature for 2036-2065 (relative to 1976-2005) under a high emissions scenario (RPC 8.5). Fig. 13 Annual sum of HDD from Heathrow Airport, London, and Dulles Airport, Washington, D.C Fig. 14 Annual sum of CDD from Heathrow Airport, London, and Dulles Airport, Washington, D.C Fig. 15 Global share of buildings and construction final energy and emissions, 2018 (Figure 2, IEA, 2019) Fig. 16 U.S. Commercial buildings energy use by end use, 2012 Fig. 17 U.S. Residential electricity consumption by end use, 2015 Fig. 18 Global CO2 emissions (fossil fuels, industry, & landuse change) in a “well below 2°C” scenario from MESSAGE. It is possible to split the net emissions (black line) into gross positive and gross negative emissions --- CHAPTER 37: MOISTURE MANAGEMENT IN BUILDINGS --- 1. Effects of Humidity and Dampness 2. Elements of Moisture Management 3. Envelope and HVAC Interactions 4. Indoor Wetting and Drying Understanding Vapor Balance Hygric Buffering 5. Vapor Release Related to Building Use Residential Buildings Natatoriums 6. Indoor/Outdoor Vapor Pressure Difference Analysis Residential Buildings Natatoriums Student Residences and Schools 7. Avoiding Moisture Problems HVAC Systems Ground Pipes Building Fabric Building Envelope 8. Climate-Specific Moisture Management Temperate and Mixed Climates Hot and Humid Climates Cold Climates 9. Moisture Management in Other Handbook Chapters References Bibliography Tables Table 1 Vapor Released by Humans, Human Activities, and Plants Table 2 Daily Vapor Release by Humans, Human Activities, and Plants: Data from Three Countries Table 3 Vapor Released by Fuel Burning Table 4 Vapor Release for Family of Two, Both Working, Weekday Schedule Table 5 Vapor Release for Family of Four, One Parent and One Child at Home, Weekday Schedule Table 6 Daily Vapor Release in Relation to Number of Family Members Table 7 Vapor Release Rates by Percentile Table 8 Measured Surface Film Coefficients for Diffusion, Related to Pool Surface Table 9 Finland and Estonia, Indoor Climate, Boundaries (Weekly Means) Table 10 Indoor Air Temperature and Indoor/Outdoor Vapor Pressure Difference: Means and Extremes Measured in Five Temperate-Climate Schools Figures Fig. 1 Dynamic Interaction Between Air, Moisture, and Materials in HVAC Systems and Building Envelope Fig. 2 Measured Water Vapor Pressure Outdoors and Indoors for Office Building Fig. 3 Daily Vapor Pressure in Two-Person Bedroom Fig. 4 Comparison of Daytime Relative Humidity for Summer and Winter Case Fig. 5 Annual Monthly Averaged Indoor/Outdoor Vapor Pressure Difference in Bedroom of Figure 3 Fig. 6 Factor f as Function of Pool User Density Fig. 7 Daytime Rooms in Dwellings Fig. 8 Indoor/Outdoor Vapor Pressure Difference in 1065 U.K. Living Rooms Fig. 9 Indoor/Outdoor Vapor Pressure Difference in 916 U.K. Bedrooms Fig. 10 Water Vapor Pressure Excess in Relation to the Running Weekly Mean Temperature for Northern Europe and Canada Fig. 11 Indoor/Outdoor Vapor Pressure Differences for 10 German Living Rooms Fig. 12 Monthly Mean Indoor/Outdoor Vapor Pressure Difference in Relation to Monthly Mean Outdoor Air Temperature in Three U.S. Climate Zones Fig. 13 Measured Monthly Mean Indoor/Outdoor Vapor Concentration Difference in 10 Homes in Madison, WI, and 10 Homes in Knoxville, TN Fig. 14 Indoor/Outdoor Vapor Pressure Difference with Intersect at 32°F for 71 Rhode Island Homes Fig. 15 Weekly Mean Indoor/Outdoor Vapor Pressure Differences for 20 Natatoriums (Measured Data and Least-Square Straight Line) Fig. 16 Natatoriums: (A) Low-Sloped Roof Damaged by Convection-Induced Interstitial Condensation; (B) Interstitial Condensation in Low-Sloped Roof Polyurethane Foam Insulation; (C) Timber Beam Collapse; (D) Abundant Surface Condensation on Window and Lintel Fig. 17 Weekly Mean Indoor/Outdoor Vapor Pressure Differences in Four Student Residences Fig. 18 Sedlbauer’s Isopleth System for Class I Substrates: Time Until Germination --- CHAPTER 38: MEASUREMENT AND INSTRUMENTS --- 1. Terminology 2. Uncertainty Analysis Uncertainty Sources Uncertainty of a Measured Variable 3. Temperature Measurement Sampling and Averaging Static Temperature Versus Total Temperature 3.1 Liquid-in-Glass Thermometers Sources of Thermometer Errors 3.2 Resistance Thermometers Resistance Temperature Devices Thermistors Semiconductor Devices 3.3 Thermocouples Wire Diameter and Composition Multiple Thermocouples Surface Temperature Measurement Thermocouple Construction 3.4 Optical Pyrometry 3.5 Infrared Radiation Thermometers 3.6 Infrared Thermography 4. Humidity Measurement 4.1 Psychrometers 4.2 Dew-Point Hygrometers Condensation Dew-Point Hygrometers Salt-Phase Heated Hygrometers 4.3 Mechanical Hygrometers 4.4 Electrical Impedance and Capacitance Hygrometers Dunmore Hygrometers Polymer Film Electronic Hygrometers Ion Exchange Resin Electric Hygrometers Impedance-Based Porous Ceramic Electronic Hygrometers Aluminum Oxide Capacitive Sensor 4.5 Electrolytic Hygrometers 4.6 Piezoelectric Sorption 4.7 Spectroscopic (Radiation Absorption) Hygrometers 4.8 Gravimetric Hygrometers 4.9 Calibration 5. Pressure Measurement Units 5.1 Instruments Pressure Standards Mechanical Pressure Gages Electromechanical Transducers General Considerations 6. Air Velocity Measurement 6.1 Airborne Tracer Techniques 6.2 Anemometers Deflecting Vane Anemometers Propeller or Revolving (Rotating) Vane Anemometers Cup Anemometers Thermal Anemometers Laser Doppler Velocimeters (or Anemometers) Particle Image Velocimetry (PIV) 6.3 Pitot-Static Tubes 6.4 Measuring Flow in Ducts 6.5 Airflow-Measuring Hoods 7. Flow Rate Measurement Flow Measurement Methods 7.1 Venturi, Nozzle, and Orifice Flowmeters 7.2 Variable-Area Flowmeters (Rotameters) 7.3 Coriolis Principle Flowmeters 7.4 Positive-Displacement Meters 7.5 Turbine Flowmeters 7.6 Electromagnetic (MAG) Flowmeters 7.7 Vortex-Shedding Flowmeters 8. Air Infiltration, Airtightness, and Outdoor Air Ventilation Rate Measurement Carbon Dioxide 9. Carbon Dioxide Measurement 9.1 Nondispersive Infrared CO2 Detectors Calibration Applications 9.2 Amperometric Electrochemical CO2 Detectors 9.3 Photoacoustic CO2 Detectors Open-Cell Sensors Closed-Cell Sensors 9.4 Potentiometric Electrochemical CO2 Detectors 9.5 Colorimetric Detector Tubes 9.6 Laboratory Measurements 10. Electric Measurement Ammeters Voltmeters Wattmeters Power-Factor Meters 11. Rotative Speed and Position Measurement Tachometers Stroboscopes AC Tachometer-Generators Optical (Shaft) Encoders 12. Sound and Vibration Measurement 12.1 Sound Measurement Microphones Sound Measurement Systems Frequency Analysis Sound Chambers Calibration 12.2 Vibration Measurement Transducers Vibration Measurement Systems Calibration 13. Lighting Measurement 14. Thermal Comfort Measurement Clothing and Activity Level Air Temperature Air Velocity Plane Radiant Temperature Mean Radiant Temperature Air Humidity 14.1 Calculating Thermal Comfort 14.2 Integrating Instruments 15. Moisture Content and Transfer Measurement Moisture Content Vapor Permeability Liquid Diffusivity 16. Heat Transfer Through Building Materials Thermal Conductivity Thermal Conductance and Resistance 17. Air Contaminant Measurement 18. Combustion Analysis 18.1 Flue Gas Analysis 19. Data Acquisition and Recording Digital Recording Data-Logging Devices 20. Mechanical Power Measurement Measurement of Shaft Power Measurement of Fluid Pumping Power 20.1 Symbols Standards References Bibliography Tables Table 1 Common Temperature Measurement Techniques Table 2 Thermocouple Tolerances on Initial Values of Electromotive Force Versus Temperature Table 3 Humidity Sensor Properties Table 4 Air Velocity Measurement Table 5 Volumetric or Mass Flow Rate Measurement Figures Fig. 1 Measurement and Instrument Terminology Fig. 2 Errors in Measurement of Variable X Fig. 3 Typical Resistance Thermometer Circuit Fig. 4 Typical Resistance Temperature Device (RTD) Bridge Circuits Fig. 5 Basic Thermistor Circuit Fig. 6 Standard Pitot Tube Fig. 7 Pitot-Static Probe Pressure Coefficient Yaw Angular Dependence Fig. 8 Measuring Points for Rectangular and Round Duct Traverse Fig. 9 Typical Herschel-Type Venturi Meter Fig. 10 Dimensions of ASME Long-Radius Flow Nozzles Fig. 11 Sharp-Edge Orifice with Pressure Tap Locations Fig. 12 Variable-Area Flowmeter Fig. 13 Nondispersive Infrared Carbon Dioxide Sensor Fig. 14 Amperometric Carbon Dioxide Sensor Fig. 15 Open-Cell Photoacoustic Carbon Dioxide Sensor Fig. 16 Closed-Cell Photoacoustic Carbon Dioxide Sensor Fig. 17 Ammeter Connected in Power Circuit Fig. 18 Ammeter with Current Transformer Fig. 19 Voltmeter Connected Across Load Fig. 20 Voltmeter with Potential Transformer Fig. 21 Wattmeter in Single-Phase Circuit Measuring Power Load plus Loss in Current-Coil Circuit Fig. 22 Wattmeter in Single-Phase Circuit Measuring Power Load plus Loss in Potential-Coil Circuit Fig. 23 Wattmeter with Current and Potential Transformer Fig. 24 Polyphase Wattmeter in Two-Phase, Three-Wire Circuit with Balanced or Unbalanced Voltage or Load Fig. 25 Polyphase Wattmeter in Three-Phase, Three-Wire Circuit Fig. 26 Single-Phase Power-Factor Meter Fig. 27 Three-Wire, Three-Phase Power-Factor Meter Fig. 28 Madsen’s Comfort Meter Fig. 29 Adsorption Isotherm and Desorption Isotherm for Hygroscopic Material --- CHAPTER 39: ABBREVIATIONS AND SYMBOLS --- 1. Abbreviations for Text, Drawings, and Computer Programs Computer Programs 2. Letter Symbols 3. Letter Symbols 4. Dimensionless Numbers 5. Mathematical Symbols 6. Piping System Identification Definitions Method of Identification 7. Codes and Standards Tables Table 1 Abbreviations for Text, Drawings, and Computer Programs Table 2 Examples of Legends Table 3 Classification of Hazardous Materials and Designation of Colors Table 4 Size of Legend Letters Figures Fig. 1 Visibility of Pipe Markings --- CHAPTER 40: UNITS AND CONVERSIONS --- Tables Table 1 Conversions to I-P and SI Units Table 2 Conversion Factors --- CHAPTER 41: CODES AND STANDARDS --- Tables Selected Codes and Standards Published by Various Societies and Associations ORGANIZATIONS --- Additions and Corrections --- 2019 HVAC Applications 2020 HVAC Systems and Equipment --- COMPOSITE INDEX: ASHRAE HANDBOOK SERIES --- Abbreviations, F38 Absorbents Absorption Acoustics. See Sound Activated alumina, S24.1, 4, 12 Activated carbon adsorption, A47.9 Adaptation, environmental, F9.17 ADPI. See Air diffusion performance index (ADPI) Adsorbents Adsorption Aeration, of farm crops, A26 Aerosols, S29.1 AFDD. See Automated fault detection and diagnostics (AFDD) Affinity laws for centrifugal pumps, S44.8 AFUE. See Annual fuel utilization efficiency (AFUE) AHU. See Air handlers Air Air barriers, F25.9; F26.5 Airborne infectious diseases, F10.7 Air cleaners. (See also Filters, air; Industrial exhaust gas cleaning) Air conditioners. (See also Central air conditioning) Air conditioning. (See also Central air conditioning) Air contaminants, F11. (See also Contaminants) Aircraft, A13 Air curtains Air diffusers, S20 Air diffusion, F20 Air diffusion performance index (ADPI), A58.6 Air dispersion systems, fabric, S19.11 Air distribution, A58; F20; S4; S20 Air exchange rate Air filters. See Filters, air Airflow Airflow retarders, F25.9 Air flux, F25.2. (See also Airflow) Air handlers Air inlets Air intakes Air jets. See Air diffusion Air leakage. (See also Infiltration) Air mixers, S4.8 Air outlets Airports, air conditioning, A3.6 Air quality. [See also Indoor air quality (IAQ)] Air terminal units (ATUs) Airtightness, F37.24 Air-to-air energy recovery, S26 Air-to-transmission ratio, S5.13 Air transport, R27 Air washers Algae, control, A50.12 All-air systems Altitude, effects of Ammonia Anchor bolts, seismic restraint, A56.7 Anemometers Animal environments Annual fuel utilization efficiency (AFUE), S34.2 Antifreeze Antisweat heaters (ASH), R15.5 Apartment buildings Aquifers, thermal storage, S51.7 Archimedes number, F20.6 Archives. See Museums, galleries, archives, and libraries Arenas Argon, recovery, R47.17 Asbestos, F10.5 ASH. See Antisweat heaters (ASH) Atriums Attics, unconditioned, F27.2 Auditoriums, A5.3 Automated fault detection and diagnostics (AFDD), A40.4; A63.1 Automobiles Autopsy rooms, A9.12; A10.6, 7 Avogadro’s law, and fuel combustion, F28.11 Backflow-prevention devices, S46.14 BACnet®, A41.9; F7.18 Bacteria Bakery products, R41 Balance point, heat pumps, S48.9 Balancing. (See also Testing, adjusting, and balancing) BAS. See Building automation systems (BAS) Baseboard units Basements Bayesian analysis, F19.37 Beer’s law, F4.16 Behavior BEMP. See Building energy modeling professional (BEMP) Bernoulli equation, F21.1 Best efficiency point (BEP), S44.8 Beverages, R39 BIM. See Building information modeling (BIM) Bioaerosols Biocides, control, A50.14 Biodiesel, F28.8 Biological safety cabinets, A17.5 Biomanufacturing cleanrooms, A19.11 Bioterrorism. See Chemical, biological, radio- logical, and explosive (CBRE) incidents Boilers, F19.21; S32 Boiling Brake horsepower, S44.8 Brayton cycle Bread, R41 Breweries Brines. See Coolants, secondary Building automation systems (BAS), A41.8; A63.1; F7.14 Building energy modeling professional (BEMP), F19.5 Building energy monitoring, A42. (See also Energy, monitoring) Building envelopes Building information modeling (BIM), A41.8; A60.18 Building materials, properties, F26 Building performance simulation (BPS), A65.8 Buildings Building thermal mass Burners Buses Bus terminals Butane, commercial, F28.5 CAD. See Computer-aided design (CAD) Cafeterias, service water heating, A51.12, 19 Calcium chloride brines, F31.1 Candy Capillary action, and moisture flow, F25.10 Capillary tubes Carbon dioxide Carbon emissions, F34.7 Carbon monoxide Cargo containers, R25 Carnot refrigeration cycle, F2.6 Cattle, beef and dairy, A25.7. (See also Animal environments) CAV. See Constant air volume (CAV) Cavitation, F3.13 CBRE. See Chemical, biological, radiological, and explosive (CBRE) incidents CEER. See Combined energy efficiency ratio (CEER) Ceiling effect. See Coanda effect Ceilings Central air conditioning, A43. (See also Air conditioning) Central plant optimization, A8.13 Central plants Central systems Cetane number, engine fuels, F28.9 CFD. See Computational fluid dynamics (CFD) Change-point regression models, F19.28 Charge minimization, R1.36 Charging, refrigeration systems, R8.4 Chemical, biological, radiological, and explosive (CBRE) incidents, A61 Chemical plants Chemisorption, A47.10 Chilled beams, S20.10 Chilled water (CW) Chillers Chilton-Colburn j-factor analogy, F6.7 Chimneys, S35 Chlorinated polyvinyl chloride (CPVC), A35.44 Chocolate, R42.1. (See also Candy) Choking, F3.13 CHP systems. See Combined heat and power (CHP) Cinemas, A5.3 CKV. See Commercial kitchen ventilation (CVK) Claude cycle, R47.8 Cleanrooms. See Clean spaces Clean spaces, A19 Clear-sky solar radiation, calculation, F14.8 Climate change, F36 Climatic design information, F14 Clinics, A9.17 Clothing CLTD/CLF. See Cooling load temperature differential method with solar cooling load factors (CLTD/CLF) CMMS. See Computerized maintenance management system (CMSS) Coal Coanda effect, A34.22; F20.2, 7; S20.2 Codes, A66. (See also Standards) Coefficient of performance (COP) Coefficient of variance of the root mean square error [CV(RMSE)], F19.33 Cogeneration. See Combined heat and power (CHP) Coils Colburn’s analogy, F4.17 Colebrook equation Collaborative design, A60 Collectors, solar, A36.6, 11, 24, 25; S37.3 Colleges and universities, A8.11 Combined energy efficiency ratio (CEER), S49.3 Combined heat and power (CHP), S7 Combustion, F28 Combustion air systems Combustion turbine inlet cooling (CTIC), S7.21; S8.1 Comfort. (See also Physiological principles, humans) Commercial and public buildings, A3 Commercial kitchen ventilation (CKV), A34 Commissioning, A44 Comprehensive room transfer function method (CRTF), F19.11 Compressors, S38 Computational fluid dynamics (CFD), F13.1, F19.25 Computer-aided design (CAD), A19.6 Computerized maintenance management system (CMMS), A60.17 Computers, A41 Concert halls, A5.4 Concrete Condensate Condensation Condensers, S39 Conductance, thermal, F4.3; F25.1 Conduction Conductivity, thermal, F25.1; F26.1 Constant air volume (CAV) Construction. (See also Building envelopes) Containers. (See also Cargo containers) Contaminants Continuity, fluid dynamics, F3.2 Control. (See also Controls, automatic; Supervisory control) Controlled-atmosphere (CA) storage Controlled-environment rooms (CERs), and plant growth, A25.16 Controls, automatic, F7. (See also Control) Convection Convectors Convention centers, A5.5 Conversion factors, F39 Cooking appliances Coolants, secondary Coolers. (See also Refrigerators) Cooling. (See also Air conditioning) Cooling load Cooling load temperature differential method with solar cooling load factors (CLTD/CLF), F18.57 Cooling towers, S40 Cool storage, S51.1 COP. See Coefficient of performance (COP) Corn, drying, A26.1 Correctional facilities. See Justice facilities Corrosion Costs. (See also Economics) Cotton, drying, A26.8 Courthouses, A10.5 Courtrooms, A10.5 CPVC. See Chlorinated polyvinyl chloride (CPVC) Crawlspaces Critical spaces Crops. See Farm crops Cruise terminals, A3.6 Cryogenics, R47 Curtain walls, F15.6 Dairy products, R33 Dampers Dampness problems in buildings, A64.1 Dams, concrete cooling, R45.1 Darcy equation, F21.6 Darcy-Weisbach equation Data centers, A20 Data-driven modeling Daylighting, F19.26 DDC. See Direct digital control (DDC) Dedicated outdoor air system (DOAS), F36.12; S4.14; S18.2, 8; S25.4; S51 Definitions, of refrigeration terms, R50 Defrosting Degree-days, F14.12 Dehumidification, A48.15; S24 Dehumidifiers Dehydration Demand control kitchen ventilation (DCKV), A34.18 Density Dental facilities, A9.17 Desiccants, F32.1; S24.1 Design-day climatic data, F14.12 Desorption isotherm, F26.20 Desuperheaters Detection Dew point, A64.8 Diamagnetism, and superconductivity, R47.5 Diesel fuel, F28.9 Diffusers, air, sound control, A49.12 Diffusion Diffusivity Dilution Dining halls, in justice facilities, A10.4 DIR. See Dispersive infrared (DIR) Direct digital control (DDC), F7.4, 11 Direct numerical simulation (DNS), turbulence modeling, F13.4; F24.13 Dirty bombs. See Chemical, biological, radio- logical, and explosive (CBRE) incidents Disabilities, A8.23 Discharge coefficients, in fluid flow, F3.9 Dispersive infrared (DIR), F7.10 Display cases Display cases, R15.2, 5 District energy (DE). See District heating and cooling (DHC) District heating and cooling (DHC), S12 d-limonene, F31.12 DNS. See Direct numerical simulation (DNS) DOAS. See Dedicated outdoor air system (DOAS) Doors Dormitories Draft Drag, in fluid flow, F3.5 Driers, S7.6. (See also Dryers) Drip station, steam systems, S12.14 Dryers. (See also Driers) Drying DTW. See Dual-temperature water (DTW) system Dual-duct systems Dual-temperature water (DTW) system, S13.1 DuBois equation, F9.3 Duct connections, A64.10 Duct design Ducts Dust mites, F25.16 Dusts, S29.1 Dynamometers, A18.1 Earth, stabilization, R45.3, 4 Earthquakes, seismic-resistant design, A56.1 Economic analysis, A38 Economic coefficient of performance (ECOP), S7.2 Economic performance degradation index (EPDI), A63.5 Economics. (See also Costs) Economizers ECOP. See Economic coefficient of performance (ECOP) ECS. See Environmental control system (ECS) Eddy diffusivity, F6.7 Educational facilities, A8 EER. See Energy efficiency ratio (EER) Effectiveness, heat transfer, F4.22 Effectiveness-NTU heat exchanger model, F19.19 Efficiency Eggs, R34 Electricity Electric thermal storage (ETS), S51.17 Electronic smoking devices (“e-cigarettes”), F11.19 Electrostatic precipitators, S29.7; S30.7 Elevators Emissions, pollution, F28.9 Emissivity, F4.2 Emittance, thermal, F25.2 Enclosed vehicular facilities, A16 Energy Energy and water use and management, A37 Energy efficiency ratio (EER) Energy savings performance contracting (ESPC), A38.8 Energy transfer station, S12.37 Engines, S7 Engine test facilities, A18 Enhanced tubes. See Finned-tube heat transfer coils Enthalpy Entropy, F2.1 Environmental control Environmental control system (ECS), A13 Environmental health, F10 Environmental tobacco smoke (ETS) EPDI. See Economic performance degradation index (EPDI) Equipment vibration, A49.44; F8.17 ERF. See Effective radiant flux (ERF) ESPC. See Energy savings performance contracting (ESPC) Ethylene glycol, in hydronic systems, S13.24 ETS. See Environmental tobacco smoke (ETS); Electric thermal storage (ETS) Evaluation. See Testing Evaporation, in tubes Evaporative coolers. (See also Refrigerators) Evaporative cooling, A53 Evaporators. (See also Coolers, liquid) Exfiltration, F16.2 Exhaust Exhibit buildings, temporary, A5.6 Exhibit cases Exhibition centers, A5.5 Expansion joints and devices Expansion tanks, S12.10 Explosions. See Chemical, biological, radio- logical, and explosive (CBRE) incidents Fairs, A5.6 Family courts, A10.4. (See also Juvenile detention facilities) Fan-coil units, S5.6 Fans, F19.18; S21 Farm crops, drying and storing, A26 Faults, system, reasons for detecting, A40.4 f-Chart method, sizing heating and cooling systems, A36.20 Fenestration. (See also Windows) Fick’s law, F6.1 Filters, air, S29. (See also Air cleaners) Finned-tube heat-distributing units, S36.2, 5 Finned-tube heat transfer coils, F4.25 Fins, F4.6 Fire/smoke control. See Smoke control Firearm laboratories, A10.7 Fire management, A54.2 Fireplaces, S34.5 Fire safety Fish, R19; R32 Fitness facilities. (See also Gymnasiums) Fittings Fixed-guideway vehicles, A12.7. (See also Mass-transit systems) Fixture units, A51.1, 28 Flammability limits, gaseous fuels, F28.1 Flash tank, steam systems, S11.14 Floors Flowers, cut Flowmeters, A39.26; F37.18 Fluid dynamics computations, F13.1 Fluid flow, F3 Food. (See also specific foods) Food service Forced-air systems, residential, A1.1 Forensic labs, A10.6 Fouling factor Foundations Fountains, Legionella pneumophila control, A50.15 Fourier’s law, and heat transfer, F25.5 Four-pipe systems, S5.5 Framing, for fenestration Freeze drying, A31.6 Freeze prevention. (See also Freeze protection systems) Freeze protection systems, A52.19, 20 Freezers Freezing Friction, in fluid flow Fruit juice, R38 Fruits Fuel cells, combined heat and power (CHP), S7.22 Fuels, F28 Fume hoods, laboratory exhaust, A17.3 Fungi Furnaces, S33 Galleries. See Museums, galleries, archives, and libraries Garages Gases Gas-fired equipment, S34. (See also Natural gas) Gas vents, S35.1 Gaussian process (GP) models, F19.30 GCHP. See Ground-coupled heat pumps (GCHP) Generators Geothermal energy, A35 Geothermal heat pumps (GHP), A35.1 Glaser method, F25.15 Glazing Global climate change, F36 Global warming potential (GWP), F29.5 Glossary, of refrigeration terms, R50 Glycols, desiccant solution, S24.2 Graphical symbols, F38 Green design, and sustainability, F35.1 Greenhouses. (See also Plant environments) Grids, for computational fluid dynamics, F13.4 Ground-coupled heat pumps (GCHP) Ground-coupled systems, F19.23 Ground-source heat pumps (GSHP), A35.1 Groundwater heat pumps (GWHP), A35.30 GSHP. See Ground-source heat pumps (GSHP) Guard stations, in justice facilities, A10.5 GWHP. See Groundwater heat pumps (GWHP) GWP. See Global warming potential (GWP) Gymnasiums, A5.5; A8.3 HACCP. See Hazard analysis critical control point (HACCP) Halocarbon Hartford loop, S11.3 Hay, drying, A26.8 Hazard analysis and control, F10.4 Hazard analysis critical control point (HACCP), R22.4 Hazen-Williams equation, F22.6 HB. See Heat balance (HB) Health Health care facilities, A9. (See also specific types) Health effects, mold, A64.1 Heat Heat and moisture control, F27.1 Heat balance (HB), S9.23 Heat balance method, F19.3 Heat capacity, F25.1 Heat control, F27 Heaters, S34 Heat exchangers, S47 Heat flow, F25. (See also Heat transfer) Heat flux, F25.1 Heat gain. (See also Load calculations) Heating Heating load Heating seasonal performance factor (HSPF), S48.6 Heating values of fuels, F28.3, 9, 10 Heat loss. (See also Load calculations) Heat pipes, air-to-air energy recovery, S26.14 Heat pumps Heat recovery. (See also Energy, recovery) Heat storage. See Thermal storage Heat stress Heat transfer, F4; F25; F26; F27. (See also Heat flow) Heat transmission Heat traps, A51.1 Helium High-efficiency particulate air (HEPA) filters, A29.3; S29.6; S30.3 High-rise buildings. See Tall buildings High-temperature short-time (HTST) pasteurization, R33.2 High-temperature water (HTW) system, S13.1 Homeland security. See Chemical, biological, radiological, and explosive (CBRE) incidents Hoods Hospitals, A9.3 Hot-box method, of thermal modeling, F25.8 Hotels and motels, A7 Hot-gas bypass, R1.35 Houses of worship, A5.3 HSI. See Heat stress, index (HSI) HSPF. See Heating seasonal performance factor (HSPF) HTST. See High-temperature short-time (HTST) pasteurization Humidification, S22 Humidifiers, S22 Humidity (See also Moisture) HVAC security, A61 Hybrid inverse change point model, F19.31 Hybrid ventilation, F19.26 Hydrofluorocarbons (HFCs), R1.1 Hydrofluoroolefins (HFOs), R1.1 Hydrogen, liquid, R47.3 Hydronic systems, S35. (See also Water systems) Hygrometers, F7.9; F37.10, 11 Hygrothermal loads, F25.2 Hygrothermal modeling, F25.15; F27.10 IAQ. See Indoor air quality (IAQ) IBD. See Integrated building design (IBD) Ice Ice makers Ice rinks, A5.5; R44 ID50‚ mean infectious dose, A61.9 Ignition temperatures of fuels, F28.2 IGUs. See Insulating glazing units (IGUs) Illuminance, F37.31 Indoor airflow, A59.1 Indoor air quality (IAQ). (See also Air quality) Indoor environmental modeling, F13 Indoor environmental quality (IEQ), kitchens, A33.20. (See also Air quality) Indoor swimming pools. (See also Natatoriums) Induction Industrial applications Industrial environments, A15, A32; A33 Industrial exhaust gas cleaning, S29. (See also Air cleaners) Industrial hygiene, F10.3 Infiltration. (See also Air leakage) Infrared applications In-room terminal systems Instruments, F14. (See also specific instruments or applications) Insulating glazing units (IGUs), F15.5 Insulation, thermal Integrated building design (IBD), A60.1 Integrated project delivery (IPD), A60.1 Integrated project delivery and building design, Intercoolers, ammonia refrigeration systems, R2.12 Internal heat gains, F19.13 Jacketing, insulation, R10.7 Jails, A10.4 Joule-Thomson cycle, R47.6 Judges’ chambers, A10.5 Juice, R38.1 Jury facilities, A10.5 Justice facilities, A10 Juvenile detention facilities, A10.1. (See also Family courts) K-12 schools, A8.3 Kelvin’s equation, F25.11 Kirchoff’s law, F4.12 Kitchens, A34 Kleemenko cycle, R47.13 Krypton, recovery, R47.18 Laboratories, A17 Laboratory information management systems (LIMS), A10.8 Lakes, heat transfer, A35.37 Laminar flow Large eddy simulation (LES), turbulence modeling, F13.3; F24.13 Laser Doppler anemometers (LDA), F37.17 Laser Doppler velocimeters (LDV), F37.17 Latent energy change materials, S51.2 Laundries LCR. See Load collector ratio (LCR) LD50‚ mean lethal dose, A61.9 LDA. See Laser Doppler anemometers (LDA) LDV. See Laser Doppler velocimeters (LDV) LE. See Life expectancy (LE) rating Leakage Leakage function, relationship, F16.15 Leak detection of refrigerants, F29.9 Legionella pneumophila, A50.15; F10.7 Legionnaires’ disease. See Legionella pneumophila LES. See Large eddy simulation (LES) Lewis relation, F6.9; F9.4 Libraries. See Museums, galleries, archives, and libraries Life expectancy (LE) rating, film, A23.3 Lighting Light measurement, F37.31 LIMS. See Laboratory information management systems (LIMS) Linde cycle, R47.6 Liquefied natural gas (LNG), S8.6 Liquefied petroleum gas (LPG), F28.5 Liquid overfeed (recirculation) systems, R4 Lithium bromide/water, F30.71 Lithium chloride, S24.2 LNG. See Liquefied natural gas (LNG) Load calculations Load collector ratio (LCR), A36.22 Local exhaust. See Exhaust Loss coefficients Louvers, F15.33 Low-temperature water (LTW) system, S13.1 LPG. See Liquefied petroleum gas (LPG) LTW. See Low-temperature water (LTW) system Lubricants, R6.1; R12. (See also Lubrication; Oil) Lubrication, R12 Mach number, S38.32 Maintenance. (See also Operation and maintenance) Makeup air units, S28.8 Malls, 12.7 Manometers, differential pressure readout, A39.25 Manufactured homes, A1.9 Masonry, insulation, F26.7. (See also Building envelopes) Mass transfer, F6 Mass-transit systems McLeod gages, F37.13 Mean infectious dose (ID50), A61.9 Mean lethal dose (LD50), A61.9 Mean temperature difference, F4.22 Measurement, F36. (See also Instruments) Measurement, F37. (See also Instruments) Meat, R30 Mechanical equipment room, central Mechanical traps, steam systems, S11.8 Medium-temperature water (MTW) system, S13.1 Megatall buildings, A4.1 Meshes, for computational fluid dynamics, F13.4 Metabolic rate, F9.6 Metals and alloys, low-temperature, R48.6 Microbial growth, R22.4 Microbial volatile organic chemicals (MVOCs), F10.8 Microbiology of foods, R22.1 Microphones, F37.29 Mines, A30 Modeling. (See also Data-driven modeling; Energy, modeling) Model predictive control (MPC), A65.6 Moist air Moisture (See also Humidity) Mold, A64.1; F25.16 Mold-resistant gypsum board, A64.7 Molecular sieves, R18.10; R41.9; R47.13; S24.5. (See also Zeolites) Montreal Protocol, F29.1 Morgues, A9.1 Motors, S45 Movie theaters, A5.3 MPC (model predictive control), A65.6 MRT. See Mean radiant temperature (MRT) Multifamily residences, A1.8 Multiple-use complexes Multisplit unitary equipment, S48.1 Multizone airflow modeling, F13.14 Museums, galleries, archives, and libraries MVOCs. See Microbial volatile organic compounds (MVOCs) Natatoriums. (See also Swimming pools) Natural gas, F28.5 Navier-Stokes equations, F13.2 NC curves. See Noise criterion (NC) curves Net positive suction head (NPSH), A35.31; R2.9; S44.10 Network airflow models, F19.25 Neutral pressure level (NPL), A4.1 Night setback, recovery, A43.44 Nitrogen Noise, F8.13. (See also Sound) Noise criterion (NC) curves, F8.16 Noncondensable gases Normalized mean bias error (NMBE), F19.33 NPL. See Neutral pressure level (NPL) NPSH. See Net positive suction head (NPSH) NTU. See Number of transfer units (NTU) Nuclear facilities, A29 Number of transfer units (NTU) Nursing facilities, A9.17 Nuts, storage, R42.7 Odors, F12 ODP. See Ozone depletion potential (ODP) Office buildings Oil, fuel, F28.7 Oil. (See also Lubricants) Olf unit, F12.6 One-pipe systems Operating costs, A38.4 Operation and maintenance, A39. (See also Maintenance) OPR. See Owner’s project requirements (OPR) Optimization, A43.4 Outdoor air, free cooling (See also Ventilation) Outpatient health care facilities, A9.16 Owning costs, A38.1 Oxygen Ozone Ozone depletion potential (ODP), F29.5 PACE. (See Property assessment for clean energy) Packaged terminal air conditioners (PTACs), S49.5 Packaged terminal heat pumps (PTHPs), S49.5 PAH. See Polycyclic aromatic hydrocarbons (PAHs) Paint, and moisture problems, F25.16 Panel heating and cooling, S6. (See also Radiant heating and cooling) Paper Paper products facilities, A27 Parallel compressor systems, R15.14 Particulate matter, indoor air quality (IAQ), F10.5 Passive heating, F19.27 Pasteurization, R33.2 Peak dew point, A64.10 Peanuts, drying, A26.9 PEC systems. See Personal environmental control (PEC) systems PEL. See Permissible exposure limits (PEL) Performance contracting, A42.2 Performance monitoring, A48.6 Permafrost stabilization, R45.4 Permeability Permeance Permissible exposure limits (PELs), F10.5 Personal environmental control (PEC) systems, F9.26 Pharmaceutical manufacturing cleanrooms, A19.11 Pharmacies, A9.13 Phase-change materials, thermal storage in, S51.16, 27 Photographic materials, A23 Photovoltaic (PV) systems, S36.18. (See also Solar energy) Physical properties of materials, F33 Physiological principles, humans. (See also Comfort) Pigs. See Swine Pipes. (See also Piping) Piping. (See also Pipes) Pitot tubes, A39.2; F37.17 Places of assembly, A5 Planes. See Aircraft Plank’s equation, R20.7 Plant environments, A25.10 Plenums PMV. See Predicted mean vote (PMV) Police stations, A10.1 Pollutant transport modeling. See Contami- nants, indoor, concentration prediction Pollution Pollution, air, and combustion, F28.9, 17 Polycyclic aromatic hydrocarbons (PAHs), F10.6 Polydimethylsiloxane, F31.12 Ponds, spray, S40.6 Pope cell, F37.12 Positive building pressure, A64.11 Positive positioners, F7.8 Potatoes Poultry. (See also Animal environments) Power grid, A63.9 Power-law airflow model, F13.14 Power plants, A28 PPD. See Predicted percent dissatisfied (PPD) Prandtl number, F4.17 Precooling Predicted mean vote (PMV), F37.32 Predicted percent dissatisfied (PPD), F9.18 Preschools, A8.1 Pressure Pressure drop. (See also Darcy-Weisbach equation) Primary-air systems, S5.10 Printing plants, A21 Prisons, A10.4 Produce Product load, R15.6 Propane Property assessment for clean energy (PACE), A38.9 Propylene glycol, hydronic systems, S13.24 Psychrometers, F1.13 Psychrometrics, F1 PTACs. See Packaged terminal air condition- ers (PTACs) PTHPs. See Packaged terminal heat pumps (PTHPs) Public buildings. See Commercial and public buildings; Places of assembly Pumps Pumps, F19.18 Purge units, centrifugal chillers, S43.11 PV systems. See Photovoltaic (PV) systems; Solar energy Radiant heating and cooling, A55; S6.1; S15; S33.4. (See also Panel heating and cooling) Radiant time series (RTS) method, F18.2, 22 Radiation Radiators, S36.1, 5 Radioactive gases, contaminants, F11.21 Radiosity method, F19.26 Radon, F10.16, 22 Rail cars, R25. (See also Cargo containers) Railroad tunnels, ventilation Rain, and building envelopes, F25.4 RANS. See Reynolds-Averaged Navier-Stokes (RANS) equation Rapid-transit systems. See Mass-transit systems Rayleigh number, F4.20 Ray tracing method, F19.27 RC curves. See Room criterion (RC) curves Receivers Recycling refrigerants, R9.3 Refrigerant/absorbent pairs, F2.15 Refrigerant control devices, R11 Refrigerants, F29.1 Refrigerant transfer units (RTU), liquid chillers, S43.11 Refrigerated facilities, R23 Refrigeration, F1.16. (See also Absorption; Adsorption) Refrigeration oils, R12. (See also Lubricants) Refrigerators Regulators. (See also Valves) Relative humidity, F1.12 Residential health care facilities, A9.17 Residential systems, A1 Resistance, thermal, F4; F25; F26. (See also R-values) Resistance temperature devices (RTDs), F7.9; F37.6 Resistivity, thermal, F25.1 Resource utilization factor (RUF), F34.2 Respiration of fruits and vegetables, R19.17 Restaurants Retail facilities, 12 Retrofit performance monitoring, A42.4 Retrofitting refrigerant systems, contaminant control, S7.9 Reynolds-averaged Navier-Stokes (RANS) equation, F13.3; F24.13 Reynolds number, F3.3 Rice, drying, A26.9 RMS. See Root mean square (RMS) Road tunnels, A16.3 Roofs, U-factors, F27.2 Room air distribution, A58; S20.1 Room criterion (RC) curves, F8.16 Root mean square (RMS), F37.1 RTDs. See Resistance temperature devices (RTDs) RTS. See Radiant time series (RTS) RTU. See Refrigerant transfer units (RTU) RUF. See Resource utilization factor (RUF) Rusting, of building components, F25.16 R-values, F23; F25; F26. (See also Resistance, thermal) Safety Sanitation Savings-to-investment ratio (SIR), A38.12 Savings-to-investment-ratio (SIR), A38.12 Scale Schneider system, R23.7 Schools Seasonal energy efficiency ratio (SEER) Security. See Chemical, biological, radio- logical, and explosive (CBRE) incidents Seeds, storage, A26.12 SEER. See Seasonal energy efficiency ratio (SEER) Seismic restraint, A49.53; A56.1 Semivolatile organic compounds (SVOCs), F10.4, 12; F11.15 Sensors Separators, lubricant, R11.23 Service water heating, A51 SES. See Subway environment simulation (SES) program Set points, A65.1 Shading Ships, A13 Shooting ranges, indoor, A10.8 Short-tube restrictors, R11.31 Silica gel, S24.1, 4, 6, 12 Single-duct systems, all-air, S4.11 SIR. See Savings-to-investment ratio (SIR) Skating rinks, R44.1 Skylights, and solar heat gain, F15.21 Slab heating, A52 Slab-on-grade foundations, A45.11 SLR. See Solar-load ratio (SLR) Smart building systems, A63.1 Smart grid, A63.9, 11 Smoke control, A54 Snow-melting systems, A52 Snubbers, seismic, A56.8 Sodium chloride brines, F31.1 Soft drinks, R39.10 Software, A65.7 Soils. (See also Earth) Solar energy, A36; S37.1 (See also Solar heat gain; Solar radiation) Solar heat gain, F15.14; F18.16 Solar-load ratio (SLR), A36.22 Solar-optical glazing, F15.14 Solar radiation, F14.8; F15.14 Solid fuel Solvent drying, constant-moisture, A31.7 Soot, F28.20 Sorbents, F32.1 Sorption isotherm, F25.10; F26.20 Sound, F8. (See also Noise) Soybeans, drying, A26.7 Specific heat Split-flux method, F19.26 Spot cooling Stack effect Stadiums, A5.4 Stairwells Standard atmosphere, U.S., F1.1 Standards, A66. (See also Codes) Static air mixers, S4.8 Static electricity and humidity, S22.2 Steam Steam systems, S11 Steam traps, S11.7 Stefan-Boltzmann equation, F4.2, 12 Stevens’ law, F12.3 Stirling cycle, R47.14 Stokers, S31.17 Storage Stoves, heating, S34.5 Stratification Stroboscopes, F37.28 Subcoolers Subway environment simulation (SES) program, A16.3 Subway systems. (See also Mass-transit systems) Suction risers, R2.24 Sulfur content, fuel oils, F28.9 Superconductivity, diamagnetism, R47.5 Supermarkets. See Retail facilities, supermarkets Supertall buildings, A4.1 Supervisory control, A43 Supply air outlets, S20.2. (See also Air outlets) Surface effect. See Coanda effect Surface transportation Surface water heat pump (SWHP), A35.3 Sustainability, F16.1; F35.1; S48.2 SVFs. See Synthetic vitreous fibers (SVFs) SVOCs. See Semivolatile organic compounds (SVOCs) SWHP. See Surface water heat pump (SWHP) Swimming pools. (See also Natatoriums) Swine, recommended environment, A25.7 Symbols, F38 Synthetic vitreous fibers (SVFs), F10.6 TABS. See Thermally activated building systems (TABS) Tachometers, F37.28 Tall buildings, A4 Tanks, secondary coolant systems, R13.2 TDD. See Tubular daylighting devices Telecomunication facilities, air-conditioning systems, A20.1 Temperature Temperature-controlled transport, R25.1 Temperature index, S22.3 Terminal units. [See also Air terminal units (ATUs)], A48.13, F19.16; S20.7 Terminology, of refrigeration, R50 Terrorism. See Chemical, biological, radio- logical, and explosive (CBRE) incidents TES. See Thermal energy storage (TES) Testing Testing, adjusting, and balancing. (See also Balancing) TETD/TA. See Total equivalent temperature differential method with time averaging (TETD/TA) TEWI. See Total equivalent warning impact (TEWI) Textile processing plants, A22 TFM. See Transfer function method (TFM) Theaters, A5.3 Thermal bridges, F25.8 Thermal comfort. See Comfort Thermal displacement ventilation (TDV), F19.17 Thermal emittance, F25.2 Thermal energy storage (TES), S8.6; S51 Thermally activated building systems (TABS), A43.3, 34 Thermal-network method, F19.11 Thermal properties, F26.1 Thermal resistivity, F25.1 Thermal storage, Thermal storage. See Thermal energy storage (TES) S51 Thermal transmission data, F26 Thermal zones, F19.14 Thermistors, R11.4 Thermodynamics, F2.1 Thermometers, F37.5 Thermopile, F7.4; F37.9; R45.4 Thermosiphons Thermostats Three-dimensional (3D) printers, F11.18 Three-pipe distribution, S5.6 Tobacco smoke Tollbooths Total equivalent temperature differential method with time averaging (TETD/TA), F18.57 Total equivalent warming impact (TEWI), F29.5 Trailers and trucks, refrigerated, R25. (See also Cargo containers) Transducers, F7.10, 13 Transfer function method (TFM); F18.57; F19.3 Transmittance, thermal, F25.2 Transmitters, F7.9, 10 Transpiration, R19.19 Transportation centers Transport properties of refrigerants, F30 Traps Trucks, refrigerated, R25. (See also Cargo containers) Tubular daylighting devices (TDDs), F15.30 Tuning automatic control systems, F7.19 Tunnels, vehicular, A16.1 Turbines, S7 Turbochargers, heat recovery, S7.34 Turbulence modeling, F13.3 Turbulent flow, fluids, F3.3 Turndown ratio, design capacity, S13.4 Two-node model, for thermal comfort, F9.18 Two-pipe systems, S5.5; S13.20 U.S. Marshal spaces, A10.6 U-factor Ultralow-penetration air (ULPA) filters, S29.6; S30.3 Ultraviolet (UV) lamp systems, S17 Ultraviolet air and surface treatment, A62 Ultraviolet germicidal irradiation (UVGI), A60.1; S17.1. [See also Ultraviolet (UV) lamp systems] Ultraviolet germicidal irradiation (UVGI), A62.1; S17.1. [See also Ultraviolet (UV) lamp systems] Uncertainty analysis Underfloor air distribution (UFAD) systems, A4.6; A58.14; F19.17 Unitary systems, S48 Unit heaters. See Heaters Units and conversions, F39 Unit ventilators, S28.1 Utility interface, electric, S7.43 Utility rates, A63.11 UV. See Ultraviolet (UV) lamp systems UVGI. See Ultraviolet germicidal irradiation (UVGI) Vacuum cooling, of fruits and vegetables, R28.9 Validation, of airflow modeling, F13.9, 10, 17 Valves. (See also Regulators) Vaporization systems, S8.6 Vapor pressure, F27.8; F33.2 Vapor retarders, jackets, F23.12 Variable-air-volume (VAV) systems Variable-frequency drives, S45.14 Variable refrigerant flow (VRF), S18.1; S48.1, 14 Variable-speed drives. See Variable-frequency drives S51 VAV. See Variable-air-volume (VAV) systems Vegetables, R37 Vehicles Vena contracta, F3.4 Vending machines, R16.5 Ventilation, F16 Ventilators Venting Verification, of airflow modeling, F13.9, 10, 17 Vessels, ammonia refrigeration systems, R2.11 Vibration, F8.17 Viral pathogens, F10.9 Virgin rock temperature (VRT), and heat release rate, A30.3 Viscosity, F3.1 Volatile organic compounds (VOCs), F10.11 Voltage, A57.1 Volume ratio, compressors VRF. See Variable refrigerant flow (VRF) VRT. See Virgin rock temperature (VRT) Walls Warehouses, A3.8 Water Water heaters Water horsepower, pump, S44.7 Water/lithium bromide absorption Water-source heat pump (WSHP), S2.4; S48.11 Water systems, S13 Water treatment, A50 Water use and management (See Energy and water use and management) Water vapor control, A45.6 Water vapor permeance/permeability, F26.12, 17, 18 Water vapor retarders, F26.6 Water wells, A35.30 Weather data, F14 Weatherization, F16.18 Welding sheet metal, S19.12 Wet-bulb globe temperature (WBGT), heat stress, A32.5 Wheels, rotary enthalpy, S26.9 Whirlpools and spas Wien’s displacement law, F4.12 Wind. (See also Climatic design information; Weather data) Wind chill index, F9.23 Windows. (See also Fenestration) Wind restraint design, A56.15 Wineries Wireless sensors, A63.7 Wood construction, and moisture, F25.10 Wood products facilities, A27.1 Wood pulp, A27.2 Wood stoves, S34.5 WSHP. See Water-source heat pump (WSHP) Xenon, R47.18 Zeolites, R18.10; R41.9; R47.13; S24.5. (See also Molecular sieves)