HEAT TRANSFER FLUID
The present invention relates to compositions which are based on tetrafluoropropene and more particularly relates to compositions comprising 60% to 90% by weight of 2,3,3,3-tetrafluoropropene and 10% to 40% by weight of at least one compound selected from difluoroethane and difluoromethane, which can be used as a heat transfer fluid.
1 . Composition comprising 60% to 90% by weight of 2,3,3,3-tetrafluoropropene and 10% to 40% by weight of at least one compound selected from difluoroethane and difluoromethane.
2 . Composition according to claim 1 , characterized in that it comprises 60% to 79% by weight of 2,3,3,3-tetrafluoropropene and 21% to 40% by weight of a compound selected from the group consisting of difluoroethane and difluoromethane.
3 . Composition according to either of claim 1 , characterized in that it comprises 60% to 70% by weight of 2,3,3,3-tetrafluoropropene and 30% to 40% by weight of a compound selected from the group consisting of difluoroethane and difluoromethane.
4 . Composition according to claim 1 , characterized in that it comprises 60% to 80% by weight of 2,3,3,3-tetrafluoropropene and 20% to 40% by weight of a mixture composed of difluoromethane and difluoroethane.
5 . Composition according to claim 1 , characterized in that it comprises 60% to 80% by weight of 2,3,3,3-tetrafluoropropene and 5% to 35% by weight of difluoromethane and 5% to 35% by weight of difluoroethane.
6 . Composition according to claim 1 , characterized in that it comprises 60% to 80% by weight of 2,3,3,3-tetrafluoropropene and 10% to 30% by weight of difluoromethane and 10% to 30% by weight of difluoroethane.
7 . Heat transfer fluid according to claim 1 .
8 . Composition according to claim 1 , characterized in that it is used as a replacement for R-404A in refrigeration and/or as a replacement for R-407C in heat pumps or air conditioning.