Basic Documentation

Index
A
Active Sound Attenuation Devices, 103
Air Delivery Device Sound, 43
A-Weighted Sound Level, 16
B
Background Sound, 2
Basic System Design Criteria, 97
Blade Frequency Increment, 24
C
Calculate Damper Blockage Factor BF, 31
Calculate Pressure Loss Coefficient C, 31
Calculate the Velocity Factor U, 31
Ceiling and Wall Absorbers, 103
Commentary on HVAC System Sound, 88
Computer Program Sound Analysis, 3
D
Damper Airflow Noise, 30
Decibels, 9
Determining an RC Rating, 20
Discharge Sound, 93
Discharge Sound and Radiated Sound, 44
Duct Attenuation, 51
Duct Configurations, 99
Duct Elbow B, 71
Duct Elbow J, 80
Duct Elbows, 59
Duct Section A, 70
Duct Section C, 73
Duct Section E, 75
Duct Section G, 76
Duct Section I, 80
Duct Sections L, 82
Duct Silencers, 63
Duct Silencers and Attenuators, 102
Duct Takeoff/Junction H, 77
Duct Takeoffs and Divisions, 61
E
Elbow Airflow Noise, 34
Enclosures, 103
End Reflection, 63, 83
Environment Adjustment Factor, 64
Example Damper Sound Power Level
Calculation, 33
Example Elbow Sound Power Level Calculation,
36
Example Fan Sound Power Level Calculation,
28
Example HVAC System Sound Analysis, 67
Example Plenum Attenuation Calculation, 49
Example RC Analysis, 21
Example Rectangular Duct Attenuation
Calculation, 52
Example Rectangular Duct Elbow Attenuation
Calculation, 61
F
Fan Aerodynamic Sound, 24
Fan Efficiency, 25
Fan Sound Components, 24
Fan Sound Power Level Calculation, 26
Fan Sound Power Level Data, 25
Fans, 98
Flexible Duct Connection to Diffusers, 44
Fume Hood Sound, 89
G
Getting Help, III
H
HVAC Sound Transmission, 2
I
Introduction to HVAC Sound Attenuation, 47
Introduction to HVAC System Sound Analysis,
67
Introduction to Minimizing HVAC Sound, 97
J
JC Factor
Junction and Takeoff Airflow Noise, 39
Junction and Takeoff Airflow Noise, 38
Junction D, 73
Junction F, 76
K
K Factor
Damper Airflow Noise, 32
Elbo Airflow Noise, 35
Junction and Takeoff Airflow Noise, 38
L
Laboratory Applicability, 2
Siemens Building Technologies, Inc. 115