Ventilation of Buildings

by Awbi,H.B.

• ISBN13: 9780415270557
• ISBN10: 0415270553
• Edition: 2nd
• Format: Hardcover
• Copyright: 2003-07-29
• Publisher: Routledge

Summary

Hazim Awbi's Ventilation of Buildingshas become established as the main text on the subject. This revised new edition builds on the basic principles and draws in the results of considerable new research in the field. A new chapter on natural ventilation is added. Recent developments in ventilation concepts and room air distribution are also included.The text is intended for the practitioner in the building services industry or the architect, the postgraduate student undertaking courses or research in HVAC, building services engineering, or building environmental engineering, and the undergraduate studying building services as a major subject. The book is both a presentation of the practical issues that are needed for modern ventilation system design and a survey of recent developments in the subject.

Table of Contents

Preface to the second edition	ix
Preface to the first edition	xi
1 Human comfort and ventilation	1	(47)
1.1 Introduction	1	(1)
1.2 Heat balance equations	1	(8)
1.3 Environmental indices	9	(4)
1.4 Thermal comfort models	13	(9)
1.5 Thermal discomfort	22	(15)
1.6 Indoor air quality	37	(8)
References	45	(3)
2 Ventilation requirements	48	(49)
2.1 Introduction	48	(1)
2.2 Indoor contaminants	49	(16)
2.3 Ventilation rates	65	(13)
2.4 Air change effectiveness and age of air	78	(4)
2.5 Types of ventilation systems	82	(7)
2.6 Energy requirement for ventilation	89	(4)
References	93	(4)
3 Air infiltration calculation and measurement	97	(40)
3.1 Introduction	97	(1)
3.2 Air leakage characteristics of buildings	98	(8)
3.3 Air infiltration calculation and modelling	106	(15)
3.4 Measurement of air infiltration	121	(14)
References	135	(2)
4 Principles of air jets and plumes	137	(49)
4.1 Introduction	137	(1)
4.2 Free air jet	137	(13)
4.3 Wall jet	150	(6)
4.4 Effect of buoyancy	156	(7)
4.5 Jet interference	163	(10)
4.6 Plumes	173	(10)
References	183	(3)
5 Air diffusion devices	186	(35)
5.1 Introduction	186	(1)
5.2 Air diffusion glossary	186	(2)
5.3 Performance of air terminal devices	188	(8)
5.4 Types of air terminal devices	196	(17)
5.5 Selection of air terminal devices	213	(7)
References	220	(1)
6 Design of room air distribution systems	221	(83)
6.1 Introduction	221	(1)
6.2 Model investigations	221	(42)
6.3 Case studies	263	(12)
6.4 Design procedures	275	(26)
References	301	(3)
7 Natural, hybrid and low energy ventilation	304	(44)
7.1 Introduction	304	(1)
7.2 Wind characteristics	305	(3)
7.3 Wind-induced ventilation	308	(5)
7.4 Buoyancy-induced ventilation	313	(4)
7.5 Combined wind and buoyancy ventilation	317	(1)
7.6 Characteristics of natural ventilation openings	318	(6)
7.7 Natural ventilation strategies	324	(14)
7.8 Combined natural and mechanical (hybrid) ventilation	338	(3)
7.9 Ventilation for fire control	341	(4)
References	345	(3)
8 Computational fluid dynamics in room air flow analysis	348	(102)
8.1 Introduction	348	(1)
8.2 Transport equations	348	(5)
8.3 Turbulence models	353	(11)
8.4 Solution of transport equations	364	(22)
8.5 CFD applications to room air movement	386	(58)
References	444	(6)
9 Measurement of indoor climate	450	(59)
9.1 Introduction	450	(1)
9.2 Measurement of air temperature	450	(7)
9.3 Measurement of radiant temperature	457	(6)
9.4 Measurement of humidity	463	(3)
9.5 Measurement of pressure	466	(3)
9.6 Measurement of air velocity	469	(13)
9.7 Measurement of volume flow rate	482	(10)
9.8 Measurement of thermal comfort	492	(2)
9.9 Measurement of air pollutants	494	(4)
9.10 Tracer gas measurements	498	(2)
9.11 Air flow visualization	500	(7)
References	507	(2)
Appendix A - Air infiltration calculation software	509	(5)
A.1 Air infiltration development algorithm (AIDA)	509	(3)
A.2 Lawrence Berkeley Laboratory (LBL) model	512	(1)
A.3 MOTOS model	512	(1)
A.4 COMIS model	512	(1)
A.5 CONTAMW model	513	(1)
References	513	(1)
Appendix B - CFD codes	514	(3)
Index	517