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Numerical simulation on the performance of heat pumps under frost conditions.

[In Chinese. / En chinois.]

Author(s) : CHEN Y. G., REN Y.

Type of article: Article

Summary

In this paper a numerical simulation of the effects of frost growth on the performance of air-source heat pumps was conducted. A general distributed parameter model is presented to describe both the steady refrigeration system and the dynamic frost process behaviours of the heat pump. The process of frost accumulation is considered as a quasi-dynamic process. The results indicates that the frost accumulation on the surface is beneficial to the performance of system because of an increasing heat transfer coefficient between the air and the heat transfer surface, while frost is thick enough, the heating capacity, COP of the heat pump and air quality of the fan reduce rapidly. The model was proven to be feasible by comparing with the experimental and simulation results of published references.

Details

  • Original title: [In Chinese. / En chinois.]
  • Record ID : 2006-2046
  • Languages: Chinese
  • Source: Refrigeration - vol. 92 - n. 3
  • Publication date: 2005

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