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Reduction of the low frequency noise due to the discharge pressure pulsation of a reciprocating compressor.

Author(s) : PARK J. I., KANG J. H., CHOI J. H., et al.

Summary

This paper investigates the causes of the noise at around 250 Hz due to the discharge pressure pulsation and proposed the methods to reduce the low frequency noise of a reciprocating compressor in a refrigerator. The compression cycle, valve dynamics and piston kinematics equations were first modelled and solved to obtain the mass flow rate. And, then the 1-D wave equation was modelled in order to estimate the pressure pulsation in the discharge line with the mass flow rate calculated. The roles of the noise source and discharge line characteristics for the low frequency noise were totally understood using the simulation model. The simulation results were in good agreement with the experiments and the improved design for the discharge line was proposed. It is shown that the path line between the cylinder head and discharge chamber is a key component to determine the amplitude and frequency of the discharge pulsation.

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Details

  • Original title: Reduction of the low frequency noise due to the discharge pressure pulsation of a reciprocating compressor.
  • Record ID : 2009-0113
  • Languages: English
  • Source: 2008 Purdue Conferences. 19th International Compressor Engineering Conference at Purdue & 12th International Refrigeration and Air-Conditioning Conference at Purdue [CD-ROM].
  • Publication date: 2008/07/14

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