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Design considerations for a second-generation CO2-expander.

Author(s) : NICKL J., WILL G., KRAUS W. E., et al.

Summary

If one replaces the throttle valve in a transcritical CO2 refrigeration cycle by a work extracting expander, the COP of the cycle can theoretically be improved by about 60%. In the past few years, in the authors' laboratory, a first-generation expander for this purpose was tested and a COP improvement of about 30% was achieved. Apparently there is room for further improvement. In the first-generation machine, the expander could be operated only in the so-called full-pressure mode. The authors present design considerations for a second-generation expander-compressor, which should overcome this drawback.

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Pages: 2002-5

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Details

  • Original title: Design considerations for a second-generation CO2-expander.
  • Record ID : 2003-2165
  • Languages: English
  • Publication date: 2002/09/17
  • Source: Source: Proc. 5th IIR-Gustav Lorentzen Conf. nat. Working Fluids, Guangzhou/ C. R. Conf. Guangzhou, IIF
    2002-5; sess. 2; pap. 22; 184-191; fig.; 9 ref.

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