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A combined experimental-numerical procedure to estimate leakage gap of compressor valves.

Number: pap.1313

Author(s) : REZENDE G. C., SILVA E., DESCHAMPS C. J.

Summary

Leakage through valves can significantly reduce the volumetric and isentropic efficiencies of compressors. Despite its importance in compressor design, the dimensional characterization of leakage gaps is not a trivial task. In this paper, we present a combined experimental-numerical method developed to estimate the leakage gap of compressor valves. Measurements of leakage were carried out via the constant volume method, which is widely employed in the analysis of gas flow through microchannels. Additionally, predictions were obtained with a one-dimensional flow model, taking into account viscous friction, slip at the walls, and gas compressibility. The leakage gap was adjusted in the simulation model so that predictions matched the measurements of leakage for different pressure differences. The procedure was applied for the analysis of three valve designs of refrigeration compressors.

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Pages: 8 p.

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Details

  • Original title: A combined experimental-numerical procedure to estimate leakage gap of compressor valves.
  • Record ID : 30019615
  • Languages: English
  • Source: 2016 Purdue Conferences. 23rd International Compressor Engineering Conference at Purdue.
  • Publication date: 2016/07/11

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