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Experimental study on the performance of R290 air-water heat pump with vapor injection for cold regions.

Number: 0066

Author(s) : LEI B., SHI H., WANG C., WU J., ZHANG L.

Summary

Air-source heat pumps offer attractive benefits over conventional boiler heating systems and electric air heaters which are energy efficient and environmentally friendly. Natural refrigerant propane is a potential substitute for HFCs in refrigeration systems. In cold regions, the performance of traditional air-source heat pumps decreases. The vapor injection technology can enhance the heating capacity effectively. In this paper, the relationship between the injection pressure, the injection ratio, the heating capacity, and the coefficient of performance (COP) was clarified according to experimental results. The COP of the R290 heat pump was 2.44 at -12℃, which was 7.0% higher than that of the R410A heat pump. The integrated part load value (IPLV) of R290 reached 2.91. Moreover, there existed promotion space for the performance of the R290 heat pump after system modification for R290.

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Pages: 11

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Details

  • Original title: Experimental study on the performance of R290 air-water heat pump with vapor injection for cold regions.
  • Record ID : 30031368
  • Languages: English
  • Subject: Technology, HFCs alternatives
  • Source: Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
  • Publication date: 2023/08/21
  • DOI: http://dx.doi.org/10.18462/iir.icr.2023.0066

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