Danfoss Turbocor TTS Series Applications And Installation Manual page 92

Table 15-3 Sound Power at Third Octave Band for TTS300
Sound Power, 250kW (70 Ton)
Third octave band (Hz)
160
200
250
315
400
500
630
800
1000
1250
1600
2000
2500
3150
4000
Table 15-4 Sound Power Measurements for TTS400
Operation Mode
420 kW (120 Ton)
525 kW (150 Ton)
Table 15-5 Sound Pressure Calculation for TTS400
Distance in Releation to Compressor (Meters)
1
1.5
3
5
8
Page 92 of 136 - M-AP-001-EN Rev. S 9/8/2021
Linear scale
A-weighted (dBA) Third octave band (Hz)
(dB)
55.5 41.8
62.0 51.7
63.9 55.6
68.7 62.0
66.9 62.3
71.5 68.6
60.2 58.4
65.1 64.5
76.5 76.7
66.2 66.9
69.9 71.0
69.6 70.9
68.6 69.9
72.3 73.6
71.3 72.3
Sound Power (A-Scale) dBA
88.4
88.1
Sound Power, 315kW (90 Ton)
Linear scale
(dB)
160
200
250
315
400
500
630
800
1000
1250
1600
2000
2500
3150
4000
Sound Power (Linear Scale) dB
89.1
89.2
Operational Mode of Compressor (Capacity)
420 kW (120 Ton) dBA
80.5
77
71
66.5
62.3
A-weighted (dBA)
59.6 45.8
64.9 54.9
67.7 59.5
69.9 63.4
66.6 62.2
65.7 62.6
71.8 69.8
67.7 67.2
70.5 70.6
82.3 83.0
72.6 73.9
73.3 74.7
72.8 74.3
75.3 76.7
74.6 75.8
525 kW (150 Ton) dBA
80
76.5
70.5
66
62