Share

Noise and vibration characteristic studies of twin screw compressor in different operating conditions.

Number: pap. 1427

Author(s) : WANG B. T., HSIEH C. H., WANG W. C., et al.

Summary

The tonal noise or vibration of air-cooled or water-cooled chillers with rotary twin screw compressors is crucial for environmental concerns. This work aims to perform the receiver tests regarding the radiated noise and structural vibration due to the compressor in different operating conditions. The sound pressure near the compressor is recorded by the one-third octave and narrow band frequency analyzers, respectively. For environmental concern, the one-third octave band spectrum is frequently adopted to evaluate the radiated noise, while the narrow band spectrum can be used to characterize the noise sources. The axial, vertical and horizontal accelerations on the compressor shell at the motor and oil-injection locations are also monitored to correlate the structure-borne noise. Other than the comparison of spectral content between radiated noise and compressor shell vibration, the frequency response functions and the coherence functions are examined to further characterize the relation between noise and vibration. This work lays out the general steps and measurement procedures for noise and vibration evaluation in primary stage for receiver tests considering different load capacities. The vibration energy transmission path tests as well as the refrigerant pulsation effects on the compressor noise and vibration can then be carried out accordingly.

Available documents

Format PDF

Pages: 7 p.

Available

  • Public price

    20 €

  • Member price*

    15 €

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Noise and vibration characteristic studies of twin screw compressor in different operating conditions.
  • Record ID : 30007512
  • Languages: English
  • Source: 2012 Purdue Conferences. 21st International Compressor Engineering Conference at Purdue.
  • Publication date: 2012/07/16

Links


See other articles from the proceedings (82)
See the conference proceedings

Indexing