A Guide to HVAC Building Services Calculations

A guide to HVAC Building Services Calculations Second Edition......Page 1
ACKNOWLEDGEMENTS......Page 3
PREFACE......Page 4
CONTENTS......Page 5
Intended users......Page 6
THE BUILDING SERVICES DESIGN PROCESS......Page 7
HVAC Design Map......Page 8
OVERVIEW OF CALCULATION SHEETS......Page 9
Use of the guidance......Page 10
OVERVIEW OF CALCULATION TOPICS......Page 11
HEATING LOADS AND PLANT......Page 13
FLOW CHART 1 – TOPICS WITHIN THIS SECTION......Page 14
FLOW CHART 2 – OVERVIEW OF SYSTEM DESIGN PROCESS......Page 15
H1 STACK EFFECT......Page 16
H2 INFILTRATION......Page 18
H3 U VALUES......Page 21
H4 CONDENSATION RISK......Page 24
H5 HEAT LOSS......Page 28
H6 PLANT HEATING LOAD......Page 30
H7 HEATING PLANT CONFIGURATION AND LOAD MATCHING......Page 31
H8 RADIATOR SIZING......Page 34
H9 BOILER SIZING......Page 37
H10 FLUE SIZING......Page 40
COOLING LOADS AND PLANT......Page 43
FLOW CHART 1 – TOPICS WITHIN THIS SECTION......Page 44
FLOW CHART 2 – OVERVIEW OF SYSTEM DESIGN PROCESS......Page 45
C1 INTERNAL HEAT GAINS......Page 46
C2 EXTERNAL GAINS......Page 47
C3 COOLING PLANT LOADS......Page 48
C4 VENTILATION – OUTDOOR AIR REQUIREMENTS......Page 50
C5 SUPPLY AIR QUANTITY AND CONDITION......Page 52
C6 HEATING/ COOLING COIL SIZING......Page 55
C7 RETURN AIR TEMPERATURE EFFECTS ON COIL DUTY......Page 60
C8 HUMIDIFIER DUTY......Page 66
C9 DEHUMIDIFICATION......Page 68
WATER FLOW DISTRIBUTION SYSTEMS......Page 71
FLOW CHART 1 – TOPICS WITHIN THIS SECTION......Page 72
FLOW CHART 2 – OVERVIEW OF SYSTEM DESIGN PROCESS......Page 73
W1 PIPE SIZING - GENERAL......Page 74
W2 PIPE SIZING – STRAIGHT LENGTHS......Page 76
W3 PIPE SIZING – PRESSURE DROP ACROSS FITTINGS......Page 78
W4 SYSTEM RESISTANCE FOR PIPEWORK – INDEX RUN......Page 79
W5 PUMP SIZING......Page 81
W6 CONTROL VALVE SELECTION/SIZING......Page 85
W7 WATER SYSTEM PRESSURISATION......Page 95
AIR FLOW DISTRIBUTION SYSTEMS......Page 97
FLOW CHART 1 – TOPICS WITHIN THIS SECTION......Page 98
FLOW CHART 2 – OVERVIEW OF SYSTEM DESIGN PROCESS......Page 99
A1 DUCT SIZING – GENERAL......Page 100
A2 DUCT SIZING – SELECTING A CIRCULAR DUCT SIZE......Page 104
A3 DUCT SIZING - CIRCULAR TO RECTANGULAR DUCT......Page 107
A4 DUCT SIZING – PRESSURE LOSS THROUGH FITTINGS......Page 111
A5 DUCT SYSTEM – INDEX RUN......Page 113
A6 FAN SIZING......Page 117
A7 GRILLE AND DIFFUSER SIZING......Page 121
A8 AIR DENSITY CORRECTION......Page 125
A9 PRESSURISATION OF SPACES......Page 127
ACOUSTICS FOR BUILDING SERVICES......Page 129
FLOW CHART 1 – TOPICS RELATED TO THIS SECTION......Page 130
AC1 ACOUSTICS FOR BUILDING SERVICES......Page 131
ALPHABETICAL LIST......Page 138
REFERENCES......Page 12