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Experimental study of a subcritical heat pump booster for sanitary hot water production using a subcooler in order to enhance the efficiency of the system with a natural refrigerant (R290).

Author(s) : PITARCH M., NAVARRO-PERIS E., GONZÁLVEZ-MACIÁ J., et al.

Type of article: Article, IJR article

Summary

This paper presents the experimental results obtained from a new heat pump prototype for sanitary hot water production, in the application of heat recovery from water sources like sewage water or condensation loops (typical temperature condition between 10°C and 30°C). The system configuration is able to produce a high degree of subcooling in order to take advantage from the high water temperature glide (typical value for sanitary hot water production is 10°C to 60°C). Subcooling is made by using a separate heat exchanger from the condenser (subcooler). The obtained results have shown a high degree of improvement by making subcooling. COP is 5.61 in nominal conditions, which is about 31% higher than the same cycle working without subcooling (Nominal point: inlet/outlet water temperature at evaporator is 20°C/15°C and the water inlet/outlet temperature in the heat sink is 10°C and 60°C).

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Pages: 226-234

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Details

  • Original title: Experimental study of a subcritical heat pump booster for sanitary hot water production using a subcooler in order to enhance the efficiency of the system with a natural refrigerant (R290).
  • Record ID : 30019848
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 73
  • Publication date: 2017/01

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