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A novel type of electrically-driven heat pump with a very high COP.

Author(s) : THEIJSE F. H.

Type of article: Article

Summary

Using R152a as a medium, a small electrically-driven compression heat pump is under development. Its main characteristics are that it is operated within the co-existence region of the medium and, using a turbo compressor and a turbine as expander, is continuously variable in speed. Using compact heat exchangers as evaporator and condenser, at a condensation temperature of 50 deg C, and an evaporation temperature of 10 deg C, a coefficient of performance (COP) of more than 6 is achieved. When used for space conditioning, the most interesting market, the annual average COP will be appreciably higher, dependent on the actual climatic conditions prevailing, due to the continuously variable speed. Available in the power range 2-50 kilowatts, it will mainly cover all heating/cooling demands in Western Europe whilst saving considerably on energy. Moreover, having an ozone depletion potential of 0 and a greenhouse warming potential of about half that of a condensing high-efficiency heating boiler, it is an environmentally benign machine.

Details

  • Original title: A novel type of electrically-driven heat pump with a very high COP.
  • Record ID : 1993-0432
  • Languages: English
  • Source: IEA HPC Newsl. - vol. 9 - n. 4
  • Publication date: 1991/12
  • Document available for consultation in the library of the IIR headquarters only.

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