Page 7 - Industrial Ventilation Design Guidebook

Vi CONTENTS

3.10 Calculation of Total Loads 32
3.11 Selection of System 34
3.12 Selection of Equipment 36
3.13 Detailed Design (Engineering) 37
3.13.1 Subtask 1: Ventilation System 38
3.13.2 Subtask 2: Operation 39
3.13.3 Subtask 3: Special Issues 39
3.13.4 Subtask 4: Commissioning Plan 39
Bibliography 39

4 Physical Fundamentals 41

4.1 Fluid Flow 42
4.1.1 Fluid Properties 42
4.1.2 Constants for Water 48
4.1.3 Constants for Gases 49
4.1.4 Properties of Air and Water Vapor 49
4.1.5 Liquid Flow 51
Bibliography 63
4.2 State Values of Humid Air; Mollier Diagrams and Their Applications 64
4.2.1 Properties of Air and Other Gases 64
4.2.2 Fundamentals 64
4.2.3 Water Vapor Pressure in the Presence of Air 68
4.2.4 Vapor Pressure of Water and Ice and Calculation
of Humid Air State Values 71
4.2.5 Construction of Mollier Diagram 74
4.2.6 Determination of Air Humidity 76
4.2.7 State Changes of Humid Air 91
4.2.8 Example of Cooling Tower Dimensioning 95
4.3 Heat and Mass Transfer 103
4.3.1 Different Forms of Heat Transfer 103
4.3.2 Analogy with the Theory of Electricity 106
4.3.3 Heat Conduction 110
4.3.4 Heat Convection 113
4.3.5 Thermal Radiation 118
4.3.6 Mass Transfer Coefficient 127
4.3.7 Heat and Mass Transfer Differential Equations
in the Boundary Layer and the Corresponding Analogy 131
4.3.8 Diffusion Through a Porous Material 138
4.3.9 Example of Drying Process Calculation 141
4.3.10 Evaporation from Multicomponent Liquid System 146
4.4 Water Properties and Treatment 148
4.4.1 Introduction 148
4.4.2 Common Water Impurities 148
4.4.3 Cooling Water Systems 152
4.4.4 Water Treatment 155
References 162