TM 5-805-4/AFJMAN 32-1090
Figure C-1. Sound Pressure Levels of Reciprocating Compressors at 3-ft. Distance.
Table C-l. Sound Pressure levels (in dB at 3-ft. distance) for packaged chillers With Reciprocating Compressors.
Sound Pressure Level, dB
Octave
51-200 Tons
10-50 Tons
Cooling
Cooling
Band
Capacity
Capacity
(Hz)
81
79
31
86
83
63
87
84
125
90
85
250
91
86
500
90
84
1000
87
82
2000
83
78
4000
78
72
8000
94
89
A-weighted,
dB(A)
C-2
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