Page 12 - Industrial Ventilation Design Guidebook

CONTENTS MJ

8.7 Air Distribution Methods and Dimensioning 640
8.7.1 Selection of Air Supply Methods 640
8.7.2 Mixing Air Distribution 640
8.7.3 Piston Flow 645
8.7.4 Displacement Flow 648
8.7.5 Zonal Air Distribution 649
References 657
Bibliography 657
8.8 Location of General Exhaust 657
8.8.1 Exhausts in Nonstratified Room Air 657
8.8.2 Exhaust of Buoyant Contaminants 658
8.8.3 Exhausts in Stratified Room Air 661
8.8.4 Location of General Exhaust to Create
Displacement Flow 661
Bibliography 661
8.9 Heating of Industrial Premises 662
8.9.1 General 662
8.9.2 The Heating Power Demand 662
8.9.3 The Heating Energy Demand 664
8.9.4 Radiant Heating 665
8.9.5 Hot Air Blowers 672
8.9.6 Air Jets 674
8.9.7 Floor Heating 674
References 676
Bibliography 676

9 Air Handling Processes 677

9.1 Introduction 679
9.1.1 Scope and Purpose 679
9.1.2 Linking with Other Chapters 679
9.1.3 Aims of an Air Handling System, Including
the Unit and Ductwork 680
9.2 Air Filters 680
9.2.1 Why Air Filters? 680
9.2.2 Atmospheric Air and Dust 681
9.2.3 Filters and Test Methods 683
9.2.4 Filters in Operation 685
9.2.5 Life-Cycle Issues 687
9.2.6 Summary 688
References 689
9.3 Heat Exchangers and Heat-Recovery Units 690
9.3.1 General Theory of Heat Exchangers 690
9.3.2 Plate Fin-and-Tube Heat Exchangers 698
References 707
9.4 Air-Handling Processes 707
9.4.1 Air-Heating Equipment 707
9.4.2 Humidification and Dehumidification 716
9A3 Air Distribution 726