EBOOK - Handbook of domestic ventilation (Rodger Edwards) | Cộng đồng Kỹ thuật cơ điện Việt Nam EBOOKBKMT

EBOOK - Sổ tay thông gió trong nhà (Rodger Edwards) - 270 Trang.

There are some excellent textbooks about ventilation currently in print. With due respect to all other authors, those written by Hassam Awbi, David Etheridge and Mats Sandberg immediately spring to mind. Many aspects of ventilation are dealt with in the standard building services engineering textbooks. Although the bias tends to be towards mechanical ventilation.

The one feature about all these sources is that there is little if any dedicated coverage of the ventilation of dwellings. This is most surprising, given that dwellings form such a large proportion of the UK’s building stock.
A common view is that ventilating houses is not complicated, and therefore there is no real point in getting too interested in the subject. This view is not consistent with the current state of the housing stock with respect to the incidence of condensation problems. We still have not got it right. Mainland Europe does not suffer from problems to the same extent as the UK. Climate differences are but part of the answer. This would suggest that the whole issue is rather more complicated than some people would have us believe.

CONTENTS:

1 Introduction 1
2 Indoor issues and health implications (and ventilation requirements) 5
2.1 Introduction 5
2.2 The need for ventilation 5
2.3 Water vapour 6
2.4 Mould growth 7
2.5 House dust mites 14
2.6 Carbon monoxide 18
2.7 Carbon dioxide 20
2.8 Nitrogen oxides 21
2.9 Other combustion by-products 22
2.10 Volatile organic compounds 22
2.11 Formaldehyde 25
2.12 Subsoil gases 26
2.13 Indoor temperatures 30
References 42
3 Prediction techniques 45
3.1 Assessment of ventilation requirements 46
3.2 The prediction of ventilation rates 72
References 95
4 Measurement techniques 97
4.1 Introduction 97
4.2 Tracer gas techniques 97
4.3 Site monitoring 100
4.4 Air leakage testing 101
4.5 DC fan pressurisation 101
4.6 AC pressurisation 112
References 112
5 Ventilation strategies for dwellings 115
5.1 Trickle ventilators and other purpose-provided openings 115
5.2 Passive stack ventilation 118
5.3 Passive stack system design 129
5.4 Comparison of means of extraction 132
5.5 Improvements on the basic PSV system 132
5.6 Mechanical extract fans 135
5.7 Assessment of extract fan performance 136
5.8 Mechanical ventilation and heat recovery 137
5.9 Variations on MVHR 140
5.10 The calculation of true efficiency values for mechanical ventilation with heat recovery 144
References 149
6 Specialist ventilation strategies 153
6.1 Ventilation in pitched roof spaces 153
6.2 Control of condensation in cold pitched-roofs 157
6.3 Sub-floor ventilation 162
6.4 Wall cavity ventilation 162
6.5 Control of landfill gas ingress 163
6.6 Control of radon gas ingress 169
6.7 Differences between radon and landfill gas control measures 173
6.8 Flats 173
6.9 Noise control and ventilation 181
References 188
7 Regulations and standards 191
7.1 Building Regulations 191
7.2 Building Regulations for England and Wales: Approved
Documents relating to ventilation 196
7.3 Building Regulations in Northern Ireland 224
7.4 Scotland 226
7.5 British Standards 231
7.6 European aspects 234
References 236
8 Domestic ventilation: future trends 239
8.1 Needs 239
8.2 Technical 241
8.3 Legislation 243
8.4 Conclusions 248
References 249

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