77-1142 - Damper Selection and Sizing - Metropac（77 - 1142 -阻尼器选择和上浆Metropac）.pdf
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Damper Selection
and Sizing
SECTION OF ENGINEERING MANUAL OF AUTOMATIC CONTROL 77-1100
Contents
Introduction 3
Definitions 3
Damper Selection 4
Damper Types 4
Parallel and Opposed Blade Dampers 4
Round Dampers 4
Low Leakage Dampers 4
Smoke Dampers 6
Fire Dampers 6
Multiple Section Dampers 7
Baffles 7
Typical Damper Construction 8
Performance Data 8
Leakage Ratings 8
Torque Requirements 10
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