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M-AP-001-EN Rev. N
Sound and Power Specifications
15.1 TT300 and
TT400 Sound Power
Measurements
15.1.1 Results
Disclaimer
The sound power levels on the TT300 and TT400 compressors are measured in compliance
with ISO 9614-1 (1993) and are given in decibels and in A-scale dB(A).
Three series of sound power measurements were performed on the unit while in two different
modes:
• For TT300: 250kW (70 ton) Refrigeration capacity
• 315kW (90 ton) Refrigeration capacity
For TT400:
• 420kW (120 ton) refrigeration capacity
• 525kW (150 ton) refrigeration capacity
The sound power measured under each operational mode is presented in Tables 15.1 and
15.2 for TT300, and Tables 17.4 and 17.5 for TT400 presents the results of sound pressure
calculations for various distances while the compressor is installed on top of a building.
• The sound data below should be used as a guide only.
• The following sound measurements are based on a specific physical setup, such as suction/
discharge piping, evaporator and condensers, as well as specific pressure ratios. Any OEM
system design would not necessarily match these conditions.
• OEMs are responsible for their system sound level measurements and their published data.
Below are the results from “Sound Power Measurements on a Turbocor TT300 Compressor.
Table 15-1 - Sound Power
Measurements for TT300
Table 15-2 - Sound Pressure
Calculation for TT300
Operation Mode
Sound Power
(A-Scale)
dBA
Sound Power
(Linear Scale)
dB
Dominant Frequency
250 kW
81.5
81.5
1070 Hz
315 kW
86.0
85.5
1180 Hz
Distance in
Relation to Compressor
(meters)
Operational Mode of Compressor (Capacity)
250 kW (70 Ton) dBA
315 kW (90 Ton) dBA
1
73.5
78.0
1.5
70.0
70.0
3
64
68.5
5
59.5
64.0
8
55.5
60.0
15 Sound and Power
Specifications
Содержание TG230 Series
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