| abstract |
The present invention relates to a heat transfer composition that does not destroy the ozone layer and does not cause unnecessary levels of global warming, and at the same time is used as a heat transfer medium and is particularly useful for stationary refrigerators and air conditioners. I will provide a. A first component comprising difluoromethane (R-32), a second component selected from polyfluorinated C2-C5 olefins, and optionally a fluorinated C2-C3 alkane. , CF3I, and a heat transfer composition comprising at least one third component selected from combinations thereof. [Selection figure] None |