EBOOK - Ventilation of Buildings - 2nd Edition (H.B. Awbi)
3 thg 7, 2024 | 10:02

EBOOK - Ventilation of Buildings - 2nd Edition (H.B. Awbi)



Hazim Awbi's Ventilation of Buildings has become established as the definitive text on the subject. This new, thoroughly revised, edition builds on the basic principles of the original text drawing in the results of considerable new research in the field. A new chapter on natural ventilation is also added and recent developments in ventilation concepts and room air distribution are also considered.

The text is intended for the practitioner in the building services industry, 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. Readers are assumed to be familiar with the basic principles of fluid flow and heat transfer and some of the material requires more advanced knowledge of partial differential equations which describe the turbulent flow and heat transfer processes of fluids. 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

1. Human Comfort and Ventilation 2. Ventilation Requirements 3. Air Infiltration 4. Principles of Air Jets and Pumps 5. Air Diffusion Devices 6. Design of Room Air Distribution Systems 7. Natural, Hybrid and Low Energy Ventilation 8. Computational Fluid Dynamics in Room Airflow Analysis 9. Measurement of Indoor Climate Appendix A Air Infiltration Calculation Software Appendix B CFD Codes


CONTENTS:


1 Human comfort and ventilation 1

1.1 Introduction 1

1.2 Heat balance equations 1

1.3 Environmental indices 9

1.4 Thermal comfort models 13

1.5 Thermal discomfort 22

1.6 Indoor air quality 37

References 45

2 Ventilation requirements 48

2.1 Introduction 48

2.2 Indoor contaminants 49

2.3 Ventilation rates 65

2.4 Air change effectiveness and age of air 78

2.5 Types of ventilation systems 82

2.6 Energy requirement for ventilation 89

References 93

3 Air infiltration calculation and measurement 97

3.1 Introduction 97

3.2 Air leakage characteristics of buildings 98

3.3 Air infiltration calculation and modelling 106

3.4 Measurement of air infiltration 121

References 135

4 Principles of air jets and plumes 137

4.1 Introduction 137

4.2 Free air jet 137

4.3 Wall jet 150

vi Contents

4.4 Effect of buoyancy 156

4.5 Jet interference 163

4.6 Plumes 173

References 183

5 Air diffusion devices 186

5.1 Introduction 186

5.2 Air diffusion glossary 186

5.3 Performance of air terminal devices 188

5.4 Types of air terminal devices 196

5.5 Selection of air terminal devices 213

References 220

6 Design of room air distribution systems 221

6.1 Introduction 221

6.2 Model investigations 221

6.3 Case studies 263

6.4 Design procedures 275

References 301

7 Natural, hybrid and low energy ventilation 304

7.1 Introduction 304

7.2 Wind characteristics 305

7.3 Wind-induced ventilation 308

7.4 Buoyancy-induced ventilation 313

7.5 Combined wind and buoyancy ventilation 317

7.6 Characteristics of natural ventilation openings 318

7.7 Natural ventilation strategies 324

7.8 Combined natural and mechanical (hybrid) ventilation 338

7.9 Ventilation for fire control 341

References 345

8 Computational fluid dynamics in room air flow analysis 348

8.1 Introduction 348

8.2 Transport equations 348

8.3 Turbulence models 353

8.4 Solution of transport equations 364

8.5 CFD applications to room air movement 386

References 444

9 Measurement of indoor climate 450

9.1 Introduction 450

9.2 Measurement of air temperature 450

9.3 Measurement of radiant temperature 457

Contents vii

9.4 Measurement of humidity 463

9.5 Measurement of pressure 466

9.6 Measurement of air velocity 469

9.7 Measurement of volume flow rate 482

9.8 Measurement of thermal comfort 492

9.9 Measurement of air pollutants 494

9.10 Tracer gas measurements 498

9.11 Air flow visualization 500

References 507

Appendix A – Air infiltration calculation software 509

A.1 Air infiltration development algorithm (AIDA) 509

A.2 Lawrence Berkeley Laboratory (LBL) model 512

A.3 AIOLOS model 512

A.4 COMIS model 512

A.5 CONTAMW model 513

References 513

Appendix B – CFD codes







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Hazim Awbi's Ventilation of Buildings has become established as the definitive text on the subject. This new, thoroughly revised, edition builds on the basic principles of the original text drawing in the results of considerable new research in the field. A new chapter on natural ventilation is also added and recent developments in ventilation concepts and room air distribution are also considered.

The text is intended for the practitioner in the building services industry, 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. Readers are assumed to be familiar with the basic principles of fluid flow and heat transfer and some of the material requires more advanced knowledge of partial differential equations which describe the turbulent flow and heat transfer processes of fluids. 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

1. Human Comfort and Ventilation 2. Ventilation Requirements 3. Air Infiltration 4. Principles of Air Jets and Pumps 5. Air Diffusion Devices 6. Design of Room Air Distribution Systems 7. Natural, Hybrid and Low Energy Ventilation 8. Computational Fluid Dynamics in Room Airflow Analysis 9. Measurement of Indoor Climate Appendix A Air Infiltration Calculation Software Appendix B CFD Codes


CONTENTS:


1 Human comfort and ventilation 1

1.1 Introduction 1

1.2 Heat balance equations 1

1.3 Environmental indices 9

1.4 Thermal comfort models 13

1.5 Thermal discomfort 22

1.6 Indoor air quality 37

References 45

2 Ventilation requirements 48

2.1 Introduction 48

2.2 Indoor contaminants 49

2.3 Ventilation rates 65

2.4 Air change effectiveness and age of air 78

2.5 Types of ventilation systems 82

2.6 Energy requirement for ventilation 89

References 93

3 Air infiltration calculation and measurement 97

3.1 Introduction 97

3.2 Air leakage characteristics of buildings 98

3.3 Air infiltration calculation and modelling 106

3.4 Measurement of air infiltration 121

References 135

4 Principles of air jets and plumes 137

4.1 Introduction 137

4.2 Free air jet 137

4.3 Wall jet 150

vi Contents

4.4 Effect of buoyancy 156

4.5 Jet interference 163

4.6 Plumes 173

References 183

5 Air diffusion devices 186

5.1 Introduction 186

5.2 Air diffusion glossary 186

5.3 Performance of air terminal devices 188

5.4 Types of air terminal devices 196

5.5 Selection of air terminal devices 213

References 220

6 Design of room air distribution systems 221

6.1 Introduction 221

6.2 Model investigations 221

6.3 Case studies 263

6.4 Design procedures 275

References 301

7 Natural, hybrid and low energy ventilation 304

7.1 Introduction 304

7.2 Wind characteristics 305

7.3 Wind-induced ventilation 308

7.4 Buoyancy-induced ventilation 313

7.5 Combined wind and buoyancy ventilation 317

7.6 Characteristics of natural ventilation openings 318

7.7 Natural ventilation strategies 324

7.8 Combined natural and mechanical (hybrid) ventilation 338

7.9 Ventilation for fire control 341

References 345

8 Computational fluid dynamics in room air flow analysis 348

8.1 Introduction 348

8.2 Transport equations 348

8.3 Turbulence models 353

8.4 Solution of transport equations 364

8.5 CFD applications to room air movement 386

References 444

9 Measurement of indoor climate 450

9.1 Introduction 450

9.2 Measurement of air temperature 450

9.3 Measurement of radiant temperature 457

Contents vii

9.4 Measurement of humidity 463

9.5 Measurement of pressure 466

9.6 Measurement of air velocity 469

9.7 Measurement of volume flow rate 482

9.8 Measurement of thermal comfort 492

9.9 Measurement of air pollutants 494

9.10 Tracer gas measurements 498

9.11 Air flow visualization 500

References 507

Appendix A – Air infiltration calculation software 509

A.1 Air infiltration development algorithm (AIDA) 509

A.2 Lawrence Berkeley Laboratory (LBL) model 512

A.3 AIOLOS model 512

A.4 COMIS model 512

A.5 CONTAMW model 513

References 513

Appendix B – CFD codes







LINK DOWNLOAD (TÀI LIỆU VIP MEMBER)

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