abstract |
The present invention relates to about 62 to about 78% by weight of trans-1,3,3,3-tetrafluoropropene (R-1234ze (E)) and about 22 to about 38% by weight of 1,1-difluoroethane (R— A heat transfer composition consisting essentially of 152a) is provided. The present invention also includes a heat transfer composition comprising about 20 to about 40% by weight R-152a, about 5 to about 55% R-134a and about 5 to about 75% by weight R-1234ze (E). provide. |