Effect of high humidity on flammability property of a few non-flammable refrigerants.

Highlights: [•] Flammability property of a few non-flammable refrigerants was examined under high humidity. [•] R-410A, R-410B, and R-143a were found to become flammable under 50% humidity at 60°C. [•] R-125 remained to be non-flammable under the same condition. [•] All these refrigerants remained to be non-flammable at temperatures up to 100°C under ordinary humidity. [•] Changes of limiting flame temperature due to humidity were also investigated. [ABSTRACT FROM AUTHOR]