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Retrofitting an R502 refrigeration plant to R507 and an R13 refrigeration plant to R23.

Author(s) : HELLMANN J., BENECKE T.

Summary

The experiences from these retrofit projects show, that the retrofit of CFC-refrigeration plants are possible without major problems or changes of components. In both case studies no significant change regarding the performance of the retrofitted systems were detected under practical test conditions. The plant which operates with R507 has since logged over 7,000 hours of fully satisfactory service. The R23 deep temperature cascade operated over 100 hours without problems related to the retrofit. The retrofit procedure in which the lubricant and the refrigerant is changed at the same time is assumed to be the best solution. For the R502 brine chiller, only two ester oil changes were necessary to reduce the level of extraneous oil in the ester lubricant to the limit of 5%. This retrofit procedure can therefore save time and reduces costs. In contrast, five oil flushes were necessary in the case of the R13 retrofit, where the refrigerant was changed with the third ester oil change.

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Pages: 158-167

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Details

  • Original title: Retrofitting an R502 refrigeration plant to R507 and an R13 refrigeration plant to R23.
  • Record ID : 1997-2000
  • Languages: English
  • Source: Research, design and construction of refrigeration and air conditioning equipments in Eastern European countries.
  • Publication date: 1996/09/10
  • Document available for consultation in the library of the IIR headquarters only.

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