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Risk assessment of HFC-32/HFC-134a (30-70) in mini-split residential air conditioners.

Author(s) : GOETZLER W., BENDIXEN L., LITTLE A. D.

Summary

A risk assessment was conducted for the substitution of R32-134a (30-70), a marginally flammable HFC blend, for R22 in mini-split air conditioners in Japanese residences. The results suggest that such a change would cause a very small increase in the risk of fires. Predicted incidences of fires are extremely low during operation or idle, and slightly greater during servicing. Risks during servicing can be reduced through proper training and enhanced regulations on venting. Modification of this analysis to consider ducted central air conditioners, commonly used in American homes, should be considered, since typical American systems use a different design concept, contain a substantially larger charge, and are used in a different environment.

Details

  • Original title: Risk assessment of HFC-32/HFC-134a (30-70) in mini-split residential air conditioners.
  • Record ID : 1997-0063
  • 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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