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Commercial heat pumps for water heating and heat recovery.

Author(s) : NEKSÅ P., REKSTAD H., ZAKERI G. R., et al.

Summary

Tap water heating is one promising application for a transcritical CO2 process. The temperature glide at heat rejection contributes to a very good temperature adaptation when heating tap water, which inherits a large temperature glide. A heating-COP of 4.3 is achieved for the prototype when heating tap water from 9 to 60 °C, at an evaporation temperature of 0 °C (seasonal performance factor of about 4 for an Oslo climate, using ambient air as the heat source). Thus, the primary energy consumption can be reduced by more than 75% compared with electrical heating. Hot water with temperatures up to 90 °C can be produced without operational difficulties.

Details

  • Original title: Commercial heat pumps for water heating and heat recovery.
  • Record ID : 2000-1751
  • Languages: English
  • Source: CO2 technology in refrigeration, heat pump & air conditioning systems (with presentation of the results of the European JOULE/THERMIE Research Programme on CO2 heat pumping systems - COHEPS). Workshop proceedings.
  • Publication date: 1999/03/18
  • Document available for consultation in the library of the IIR headquarters only.

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