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CFD applications for development of a reciprocating compressor.

Author(s) : NAKANO A., KINJO K.

Summary

This paper describes the analysis of pressure changes in the suction muffler of a reciprocating compressor using CFD, aiming at increasing cooling capacity and efficiency. The numerical calculations take place in 2 stages. In the first stage, the authors calculate pressure changes in the cylinder, considering the vibration of the suction lead valve, using transfer matrix methods (4-pole relations). In the second stage, they carry out a numerical analysis of three-dimensional unsteady compressible viscous flow, taking pressure changes in the cylinder obtained in the first stage as the boundary condition. Then, the pressure changes in the suction muffler are analyzed and the mass flow rate of the refrigerant is maximized. For the second stage computation FLUENT is used. As a result, along with obtaining findings for the reduction of the heating loss and pressure loss of the suction muffler, the authors could improve the suction muffler to increase the mass flow rate by 11%.

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Details

  • Original title: CFD applications for development of a reciprocating compressor.
  • Record ID : 2008-2459
  • 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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