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Refrigerant Flammability: A New Application of the Opposed-Flow Burner.


pdf icon Refrigerant Flammability: A New Application of the Opposed-Flow Burner. (123 K)
Womeldorf, C. A.

NISTIR 5904; October 1996.

National Institute of Standards and Technology. Annual Conference on Fire Research: Book of Abstracts. October 28-31, 1996, Gaithersburg, MD, 145-146 pp, 1996.

Available from:

National Technical Information Service
Order number: PB97-153514

Keywords:

fire research; fire science; refrigerants; flammability; burners

Abstract:

Due to concerns about the impact of cholorofluorocarbons (CFCs) on the earth's ozone, new refrigerants are being evaluated by the air-conditioning and refrigerant industry to identify environmentally friendly replacements. These alternative refrigerants are primarily hydrofluorocarbons (HFCs) and hydrochlorofluorocarbons (HCFCs); some of which, because of the additional hydrogen atoms, are flammable. In order to maintain the current requirement of non-flammable refrigerants, optimized mixtures which maximize efficiency while minimizing risk are desired. Current methods of measuring of flammability for weakly flammable refrigerants have a large uncertainty and produce results which require operator interpretation. This work presents an alternative approach with reduced uncertainty and less operator interpretation.