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Cool-headed CFC-12 and 502 elimination.

Author(s) : MCINTOSH D. J.

Type of article: Article

Summary

The first steps taken by an Australian refrigeration contractor to replace CFC refrigerants was to use R22. Successful conversions were made to low temperature systems in supermarkets using two-stage or demand cooled accessible sealed compressors, also open-drive single-stage compressors. All these were installed with oversized air-cooled condensers and some with head cooling fans to reduce discharge temperatures below 110 deg C. Field tests have now been carried out using R134a where applicable, also R403B, R402A and B, R401A, and other binary and ternary mixtures. The author suggests that in many CFC systems it is reasonable to eliminate leaks and vibration and continue the CFC use with additional service checks for the immediate future. D.W.H.

Details

  • Original title: Cool-headed CFC-12 and 502 elimination.
  • Record ID : 1995-1464
  • Languages: English
  • Source: AIRAH J. - vol. 48 - n. 5
  • Publication date: 1994/05
  • Document available for consultation in the library of the IIR headquarters only.

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