Experiment on two-stage compression air-source heat pump water heater.

[In Chinese. / En chinois.]

Author(s) : WU W., WANG W., JIN S., et al.

Type of article: Article


The two-stage compression refrigeration cycle was adopted in air-source heat pumps (ASHP) to improve the feasibility of ASHP at low ambient temperature. An air-source heat pump water heater with both modes of single-stage and two-stage compression cycles was designed and a test rig was built up. The experimental results show that the compression ratio in the two-stage compression cycle mode was smaller than that in the single-stage compression cycle mode while the heating ability of the pump with the two-stage compression cycle mode was higher at low ambient temperature. The COP of the two-stage compression system could reach about 1.5 when the ambient temperature was -20°C.

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Pages: pp. 35-38


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  • Original title: [In Chinese. / En chinois.]
  • Record ID : 2010-0241
  • Languages: Chinese
  • Source: Journal of Refrigeration - vol. 30 - n. 1
  • Publication date: 2009/02


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