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Can the COP of compression refrigeration cycles and of heat pumps be increased by exothermal expansion of the refrigerant in a cooling vortex tube?

[In German. / En allemand.]

Author(s) : KELLER J. U.

Type of article: Article

Summary

The isenthalpic expansion process of the working fluid in compression cycles can be replaced by the exothermic expansion of the fluid in a cooling vortex tube. In this way the cooling capacity of the cycle can be increased by the amount of heat released additionally by this device to the environment. Based on preliminary calculations and experiments, it can be stated that the COP of refrigeration cycles thus can be increased by 5%, which is about one sixth of the total amount theoretically possible in view of Carnot's limits of the expansion process. The cooling vortex tube basically is a vortex tube of Ranque and Hilsch.

Details

  • Original title: [In German. / En allemand.]
  • Record ID : 1994-0207
  • Languages: German
  • Source: Klima Kälte Heiz. - vol. 21 - n. 7-8
  • Publication date: 1993/07
  • Document available for consultation in the library of the IIR headquarters only.

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