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Transcritical CO2 heat pump for residential application.

Author(s) : RICHTER M. R., SONG S. M., YIN J. M., et al.

Summary

The paper describes experiments comparing a commercially available R410A heat pump and prototype R744 (carbon dioxide) system, in heating mode. The R744 system utilizes aluminium microchannel heat exchangers and a prototype semi-hermetic compressor. System performance is compared for two configurations: first when the R744 compressor speed is set to match heating capacity at 8.2 °C outdoors and 21.1 °C indoors; and second when the air conditioning capacity is matched at 35 °C outdoors and 26.5 °C indoors. The R744 system operates with a slightly lower heat performance factor, but its higher capacity at lower outdoor temperatures reduces the need for less efficient backup heating capacity.

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Pages: 2000-1

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Details

  • Original title: Transcritical CO2 heat pump for residential application.
  • Record ID : 2002-0044
  • Languages: English
  • Source: Final proceedings of the 4th IIR-Gustav Lorentzen Conference on Natural Working Fluids at Purdue.
  • Publication date: 2000/07/25

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