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Performance of plate heat exchangers and compressor in a domestic heat pump using propane.

Author(s) : PELLETIER O., PALM B.

Summary

Two plate heat exchangers have been tested, both as condensers and as evaporators, in a test rig simulating a small domestic heat pump. The overall heat transfer coefficients were calculated from the mass flow and the enthalpy change of the refrigerant, and from the logarithmic mean temperature difference between the refrigerant and the secondary refrigerant-water. The results show that the overall heat transfer coefficients are slightly higher for propane than for R22 in the evaporator, but slightly lower in the condenser. The pressure drop is about half with propane in both condenser and evaporator. It is believed that with a new design of the heat exchangers, the heat transfer coefficients will be higher for propane than for R22 in both condenser and evaporator. Using the same compressor for the two refrigerants, it was found that the heating capacity was lower and the COP higher with propane than with R22.

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Pages: 1996-3

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Details

  • Original title: Performance of plate heat exchangers and compressor in a domestic heat pump using propane.
  • Record ID : 1997-2795
  • Languages: English
  • Source: Applications for Natural Refrigerants
  • Publication date: 1996/09/03
  • Document available for consultation in the library of the IIR headquarters only.

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