Building Services Engineering 5th Edition Handbook

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Contents
Economic thickness of thermal insulation 49
Accounting for energy-economizing systems 52
Low-energy buildings 53
The effect on gas consumption of thermal insulation in houses 55
Questions 56
3 Heat loss calculations 60
Learning objectives 60
Key terms and concepts 60
Introduction 60
Thermal resistance of materials 61
Thermal transmittance (U value) 63
Heat loss from buildings 67
Boiler power 71
Thermal transmittance measurement 72
Questions 79
4 Heating 85
Learning objectives 85
Key terms and concepts 86
Introduction 86
Heating equipment 86
Hot-water heating 93
Oil-firing equipment 102
Combustion 103
Flues 105
Performance testing 106
Electrical power generation 108
Combined heat and power 108
District heating 109
Building energy management systems 111
Geothermal heating 114
Questions 117
5 Ventilation and air conditioning 125
Learning objectives 125
Key terms and concepts 125
Introduction 126
Ventilation requirements 126
Natural and mechanical systems 128
Removal of heat gains 137
Psychrometric cycles 142
Air-conditioning systems 147
Vapour-compression refrigeration 151
Absorption refrigeration cycle 154
Ventilation rate measurement 156
Materials for ventilation ductwork 158
Chlorofluorocarbons 158