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Experimental Investigation on One-time Heating R32 Two-stage Air Source Heat Pump Water Heater.

Number: No 031

Author(s) : ZHENG B., LIANG X., ZHUANG R.

Summary

A one-time heating R32 two-stage air source heat pump water heater was experimentally studied under various working conditions, and compared with a static heating type. The tested results show that when the inlet water temperature and the outlet water temperature are fixed, the heating COP is almost unchanged with the increase of the heating capacity; when the heating capacity is fixed, the heating COP decreases with the increase of the inlet water temperature or the outlet water temperature; the condensation temperature of onetime heating type is much lower than that of the static heating type, and also lower than the outlet water temperature. A one-time heating two-stage compression cycle can effectively reduce the discharge temperature and broaden the operating range of the R32 air source heat pump water heater, and improve the reliability of R32 compressor under low ambient temperature and high outlet water temperature conditions. 

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Pages: 9 p.

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Details

  • Original title: Experimental Investigation on One-time Heating R32 Two-stage Air Source Heat Pump Water Heater.
  • Record ID : 30029926
  • Languages: English
  • Subject: Technology
  • Source: 13th IEA Heat Pump Conference 2021: Heat Pumps – Mission for the Green World. Conference proceedings [full papers]
  • Publication date: 2021/08/31

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