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Ventilation Engineering (2nd Edition) Wang Hanqing, rar

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Brief introduction:
  • Based on the first edition of the book, combined with the new national standards, new specifications, new development in the field of ventilation engineering and the new needs of teaching, the book has revised the relevant contents with the times. The book introduces the types, sources and hazards of industrial harmful substances, and systematically describes various ventilation methods to eliminate harmful substances in the air of industrial and civil buildings, including natural ventilation, overall ventilation, local ventilation, tunnel ventilation, smoke and smoke exhaust ventilation, air purification principle and equipment, ventilation duct design calculation, measurement and commissioning, etc. The outdoor air pollutants include the formation, diffusion, harm and ventilation prevention methods of haze, the related contents of multiple ventilation, and the numerical simulation method of airflow flow in ventilation engineering. This book focuses on the basic concepts, basic principles, basic methods, and the cultivation of students' basic engineering design skills. The book is comprehensive and detailed, reflecting the new technical progress and research results in the field of ventilation engineering. Each chapter is closely related but relatively independent, which is convenient for teachers' explanation and students' self-study.
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    Preface to 2nd Edition
    Preface to the first edition
    Chapter 1 overview 1
    1. 1. Industrial hazardous substances and their basic health toxicology
    1. 1. 1. Types and sources of industrial harmful substances
    1. 1. 2. Basic health toxicology of industrial hazardous substances 3
    1. 1. 3. Impact of industrial harmful substances on industrial and agricultural production 8
    1. 1. 4. Impact of industrial harmful substances on atmospheric environment 8
    1. Influence of meteorological conditions on human physiology
    1. 2. 1 heat exchange between human body and surrounding environment 9
    1. 2. 2. Basic parameters affecting human thermal comfort 10
    1. 3 contents of harmful substances in the air and relevant standards
    1. 3. 1 harmful substance content 11
    1. 3. 2 health standards 11
    1. 3. 3 emission standards 12
    1. 4 ventilation methods for prevention and control of harmful substances 13
    1. 4. 1. Indoor transmission mechanism of harmful substances 13
    1. 4. 2. Ventilation methods for prevention and control of harmful substances
    1. 4. 3. Comprehensive measures for prevention and control of harmful substances 15
    Exercise 16
    16 refs
    Chapter 2 general ventilation 17
    2. 1 Determination of total ventilation rate 17
    2. 1. Basic differential of general ventilation
    Equation 17
    2. 1. 2 Determination of total ventilation 19
    2. 1. 3 Calculation of harmful substances emission 21
    2. 1. 4 air distribution 21
    2. 1. 5 air balance and heat balance 23
    2. 2 displacement ventilation 26
    2. 2. 1 Index for evaluating ventilation effect 26
    2. 2. 2 principle of displacement ventilation 28
    2. 2. 3 characteristics of displacement ventilation 28
    2. 2. 4 Design of displacement ventilation 29
    2. 3 emergency ventilation 33
    Exercise 33
    34 refs
    Chapter 3 natural ventilation 35
    3. 1 principle of natural ventilation 35
    3. 1. 1 natural ventilation under hot pressure 36
    3. 1. 2 natural ventilation under wind pressure 38
    3. 1. 3. Nature under the combined action of hot pressure and wind pressure
    Ventilation 39
    3. 2 Calculation of natural ventilation in industrial plant 40
    3. 2. 1 steps of design calculation 40
    3. 2. 2 steps of checking calculation 43
    3. 2. 3 calculation example 44
    3. 3 natural ventilation and architectural design 46
    3. 3. 1. General layout of building 46
    3. 3. 2 selection of architectural forms 47
    3. 3. 3 process layout 48
    3. 3. 4 Design of wind shelter skylight and hood 49
    3. 3. 5 natural ventilation of ecological buildings 50
    3. 4 multi ventilation 53
    3. 4. 1. Presentation of multi ventilation technology 54
    3. 4. 2 solar chimney 54
    3. 4. 3 natural ventilation mode and mechanical ventilation mode alternate
    Operation 54
    3. 4. 4 fan assisted natural ventilation 54
    3. 4. 5 hot and air pressure assisted mechanical ventilation 55
    3. Formation of outdoor air pollutants and building ventilation
    Control methods 55
    3. 5. 1. Main components of outdoor air pollutants and their
    Hazard 55
    3. 5. 2. Main sources of outdoor air pollutants 57
    3. 5. 3. Diffusion law of outdoor air pollutants
    Analysis 57
    3. 5. Ventilation prevention and control of outdoor air pollutants
    Method 58
    Exercise 60
    Table of contents VII
    60 refs
    Chapter 4 local ventilation 62
    4. 1 overview 62
    4. 1. 1 local exhaust 62
    4. 1. 2 local air supply 63
    4. 2 design principles of local exhaust 63
    4. 2. 1. Principle of local exhaust system division 63
    4. 2. 2. Form and design principle of local exhaust hood 63
    4. 2. 3 purification of local exhaust 64
    4. 3 exhaust hood design calculation theory 64
    4. 3. Air flow movement law of 1 exhaust hood
    4. 3. 2 calculation method of exhaust volume of exhaust hood 68
    4. 4 airtight cover 69
    4. 4. 1 working principle 69
    4. 4. 2 basic form of airtight cover 69
    4. 4. 3 factors affecting the performance of airtight cover 70
    4. 4. 4 Calculation of airtight cover 71
    4. 4. Application and design of 5 airtight cover 72
    4. 5 cabinet type exhaust hood 72
    4. 5. 1 form of cabinet type exhaust hood 72
    4. 5. 2 Calculation of exhaust air volume of cabinet type exhaust hood 73
    4. 5. 3 points for attention in the design of cabinet type exhaust hood 74
    4. 6 outer suction hood 74
    4. 6. 1 Calculation of exhaust air volume of external suction hood 74
    4. 6. 2. Matters needing attention in design of external suction hood 77
    4. 7 heat source upper receiving exhaust hood 78
    4. 7. 1 thermal jet and its calculation 78
    4. 7. Calculation of exhaust air volume of upper receiving hood of 2 heat source
    4. 8 slot side exhaust hood 81
    4. 8. The structural form of 1 slot side exhaust hood 81
    4. 8. Calculation of exhaust volume of 2-slot side exhaust hood
    4. 9 air exhaust hood 84
    4. 9. 1. Structural form of blowing and suction exhaust hood 84
    4. 9. 2 design and calculation of suction exhaust hood 84
    4. 10 other forms of exhaust hood 86
    4. 10. 1 roof hood 86
    4. 10. 2 air curtain exhaust hood 87
    4. 11 local air supply 88
    Exercise 91
    92 refs
    Chapter 5 tunnel ventilation 93
    5. 1 overview 93
    5. 2 common tunnel ventilation methods 93
    5. 2. 1 natural ventilation 93
    5. 2. 2 mechanical ventilation 96
    5. 3 construction tunnel ventilation 96
    5. 3. 1 construction ventilation control conditions 96
    5. 3. 2 selection of construction ventilation mode 97
    5. 3. 3 Calculation of ventilation rate of construction working face 101
    5. 3. 4 construction ventilation management and equipment configuration 102
    5. 4 ventilation of operating tunnels 102
    5. 4. 1 ventilation requirements 103
    5. 4. 2 ventilation rate and pressure 104
    5. 4. 3 selection of ventilation mode 105
    Exercise 108
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