Danfoss Turbocor TTS Series, Applications And Installation Manual

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