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Quasi-dynamic hermetical compressor model suitable for dynamic simulation of refrigeration system.

[In Chinese. / En chinois.]

Author(s) : LIN E., DING G., ZHAO D., et al.

Type of article: Article

Summary

The compressor model used in the dynamic simulation of refrigeration system should not only be applicable in the case of the state of the sucked refrigerant varies in a wide range of vapor to two-phase, and also be quick enough in predicting the major dynamic characteristics of the compressor. In order to meet these requirements, a quasi-dynamic hermetic compressor model covering the suction state from vapor to two-phase was presented in this paper. According to its thermodynamic process, the compressor model includes a dynamic model for the mixing process of refrigerant inside compressor and sucked two-phase or vapor refrigerant, a dynamic model for the compressor shell heat transfer model, and a steady state model for the polytropic compression. The compressor model overcomes the flaw of unreasonable mass flow of the existing models caused by neglecting the mixing process of refrigerant inside a compressor. The maximum differences of steady state mass flow rate and input power of a hermetic compressor between the experimental data and the predicted results are less than 5%, while the deviations of the predicted transient mass flow rate and input power from the experimental data are within 10%.

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Pages: 28-31

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Details

  • Original title: [In Chinese. / En chinois.]
  • Record ID : 30004194
  • Languages: Chinese
  • Source: Journal of Refrigeration - vol. 33 - n. 143
  • Publication date: 2012/02

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