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Numerical investigation of the gas leakage through the piston cylinder clearance of reciprocating compressors.

Number: pap. 1267

Author(s) : LOHN S. K., PEREIRA E. L. L.

Summary

Gas leakage through the clearance between piston and cylinder is a major source of thermodynamic inefficiency in reciprocating compressors, therefore, any simulation model should accurately predict its effect on the overall performance. Factors like misalignment between piston and cylinder and components geometric errors are not taken into account in the simpler numerical models usually adopted to estimate the gas leakage. This paper aims to analyze the impact of such simplifications using a three-dimensional computational fluid dynamics (CFD) model, including transient effects resulting from the piston movement as well as actual geometric errors characteristic of the usual manufacturing processes adopted for the household compressor industry. The results are compared to numerical predictions of simpler models and its benefits are emphasized.

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Pages: 9 p.

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Details

  • Original title: Numerical investigation of the gas leakage through the piston cylinder clearance of reciprocating compressors.
  • Record ID : 30014032
  • Languages: English
  • Source: 2014 Purdue Conferences. 22nd International Compressor Engineering Conference at Purdue.
  • Publication date: 2014/07/14

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