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A numerical model for thermal mapping in a hermetically sealed reciprocating refrigerant compressor.

Author(s) : RAJA B., SEKHAR S. J., MOHAN LAL D., et al.

Type of article: Article, IJR article

Summary

In a refrigerant compressor, improvement in performance, e.g. reduction in various electrical and mechanical losses, reduction of gas leakage, better lubrication, reduction of suction gas heating etc. can be achieved by maintaining a low temperature rise inside the compressor. Proper selection and location of an internal overload protector relay, estimation of the heat transfer coefficient and winding insulation coefficient are also vital in enhancing the performance. In this context, it is necessary to understand the temperature distribution inside a compressor for an optimal design. In this paper, a numerical model has been created and a heat transfer analysis for a hermetically sealed reciprocating refrigerant compressor is presented. The temperature distribution inside the compressor has been obtained taking into consideration the various heat sources and sinks compared with experimental results. The maximum temperature was observed at the level of the rotor, and was 427.5 K. The deviation of the predicted rotor temperature from that of experimental value is only 5.5%. Good agreement was found between experimental results and those predicted in the numerical analysis.

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Pages: 652-658

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Details

  • Original title: A numerical model for thermal mapping in a hermetically sealed reciprocating refrigerant compressor.
  • Record ID : 2004-0145
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 26 - n. 6
  • Publication date: 2003/09

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