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Performance comparison of R502 replacements in a commercial scale low temperature refrigeration plant with a two stage compressor.

Author(s) : HEARTY P. F., LINTON J. W., SNELSON W. K., TRIEBE A. R.

Summary

The performance of the condensing unit operating with R407 showed the greatest increase in cooling capacity compared to R502, ranging from 8.5 to 11% greater. R404A was next in line with an increase in capacity of 4 to 6.5%. R407A had a cross-over at -32 deg C with a decrease in capacity of 6% at 40 deg C and an increase of 3 % at -26 deg C evaporating temperatures. A comparison of the COP of the condensing unit showed that R407A had the same COP as R502 at -40 deg C and was about 4% higher at -26 deg C. R507 and R404A had similar COPs that were approximately 3% lower than R502. These conclusions would be applicable to any retrofit application using this type of condensing unit and these refrigerants.

Details

  • Original title: Performance comparison of R502 replacements in a commercial scale low temperature refrigeration plant with a two stage compressor.
  • Record ID : 1997-0078
  • Languages: English
  • Source: Proceedings of the 1996 Purdue International Refrigeration Conference.
  • Publication date: 1996/07/23
  • Document available for consultation in the library of the IIR headquarters only.

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