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Thermodynamic cycle analysis and experimental investigation on a three-stage vapor injection air source heat pump.

Number: pap. n. 1402

Author(s) : ZHAO H., LEI P., HUANG Y., et al.

Summary

For the air source heat pump of R-410A, when the ambient temperature is low, the heating performance of the two-stage compression system is not perfect. In this paper, the heating performance coefficients of four three-stage compression heating cycles weretheoretically deduced and analyzed, and the experimental prototype of the three-stage compression heat pump system was constructed to compare the heating performance of the two-stage compression heat pump system under the same working conditions. It was concluded that for these four three-stage compression cycles the calculated coefficient of performance (COP) of the three-stage compression with two flash tanks cycle is better than that of other three cycles. The experimental result shows that the COP of the three-stage compression system was 0.5%~3% higher than that of the two-stage compression system at the indoor temperature of 20°Cand the outdoor temperature of -20°C~7°C, and comparing with the two-stage compression system, the three-stage compression system has no obvious advantage.

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Pages: 7

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Details

  • Original title: Thermodynamic cycle analysis and experimental investigation on a three-stage vapor injection air source heat pump.
  • Record ID : 30026110
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.1402

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