Refrigerant Flammability: A New Application of the Opposed-Flow Burner.
Refrigerant Flammability: A New Application of the
Womeldorf, C. A.; Grosshandler, W. L.; King, M. D.
Combustion Institute/Eastern States Section. Chemical
and Physical Processes in Combustion. Proceedings.
Fall Technical Meeting. December 9-11, 1996, Hilton
Head, SC, Westmoreland, P. R.; Smooke, M. D.,
Editor(s)(s), 257-260 pp, 1996.
refrigerants; combustion; counter flow burner;
difluoromethane; flammability limits; flammability
tests; reaction kinetics
Due to concerns about the impact of cholorofluorocarbons
(CFCs) on stratospheric 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 building code requirement
of non-flammable refrigerants, optimized mixtures which
maximize efficiency while minimizing risk are desired.
Current methods of measuring flammability of 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 subjectivity.