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Performance testing of R-22 and R-502 alternatives based on R-32/R-125/R-134a.

Author(s) : FERRARI D., MURPHY F. T., CORR S., LOW R. E.

Summary

HFC refrigerants intended as alternatives to R-22 and R-502 have been developed by ICI as ternary mixtures of R-32, R-125 and R-134a. Performance of these refrigerants has been evaluated by theoretical studies, calorimetry and system trialling. Extensive work has been carried out in field trialling and retrofit of these refrigerants
The paper covers the topics of blend design; total environmental warming impact of HFC alternatives, theoretical and practical performance data, and practical experience of retrofitting systems to the alternatives. The paper illustrates the importance of considering behaviour of alternative refrigerants in all parts of a refrigeration system, as opposed to relying on a single test method or rating point in isolation.
The issues of temperature glide and servicing of zeotropic refrigerants are discussed. Studies on system leakage are used to illustrate that these refrigerants can be used and serviced with minimal alterations to existing practice.

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Pages: p 223-230

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Details

  • Original title: Performance testing of R-22 and R-502 alternatives based on R-32/R-125/R-134a.
  • Record ID : 30034020
  • Languages: English
  • Subject: Technology
  • Source: CFCs, the Day After.
  • Publication date: 1994
  • Document available for consultation in the library of the IIR headquarters only.

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