Use of low GWP refrigerants comprising CF
View Patent ↗The invention pertains to heat transfer compositions, particularly to automobile refrigerants comprising a hydrofluoroalkene, an iodocarbon, and at least one lubricant having hydrogen atoms and carbon atoms, wherein no more than 17% of the total number of hydrogen atoms which are attached to a carbon atom are tertiary hydrogen atoms.
1. A heat transfer composition comprising: (a) a refrigerant comprising: (i) at least a first compound selected from at least one of 2,3,3,3-tetrafluoropropene, trans-1,3,3,3-tetrafluoropropene and HFC-32; and (ii) at least about 40% by weight of CF 3 I; (b) lubricant; and (c) a stabilizer.
2. The composition of claim 1 wherein said at least a first compound comprises 2,3,3,3-tetrafluoropropene.
3. The composition of claim 1 wherein said at least a first compound comprises trans-1,3,3,3-tetrafluoropropene.
4. A mobile air conditioning system comprising the heat transfer composition of claim 1 .
5. A heat transfer system comprising the heat transfer composition of claim 1 .
6. A method of transferring heat to or from a fluid or body comprising contacting the fluid or body with the heat transfer composition of claim 1 .
7. A heat transfer composition comprising: (a) a refrigerant comprising: (i) at least a first compound selected from at least one of 2,3,3,3-tetrafluoropropene, trans-1,3,3,3-tetrafluoropropene and HFC-32; and (ii) at least about 25% by weight of CF 3 I; (b) lubricant; and (c) a stabilizer.
8. The composition of claim 7 wherein said at least a first compound comprises 2,3,3,3-tetrafluoropropene.
9. The composition of claim 7 wherein said at least a first compound comprises trans-1,3,3,3-tetrafluoropropene.
10. A mobile air conditioning system comprising the heat transfer composition of claim 7 .
11. A heat transfer system comprising the heat transfer composition of claim 7 .
12. A method of transferring heat to or from a fluid or body comprising contacting the fluid or body with the heat transfer composition of claim 7 .
13. A heat transfer composition comprising: (a) a refrigerant comprising: (i) at least a first compound selected from at least one of 2,3,3,3-tetrafluoropropene, trans-1,3,3,3-tetrafluoropropene and HFC-32; and (ii) at least about 50% by weight of CF 3 I; (b) lubricant; and (c) a stabilizer.
14. The composition of claim 13 wherein said at least a first compound comprises 2,3,3,3-tetrafluoropropene.
15. The composition of claim 13 wherein said at least a first compound comprises trans-1,3,3,3-tetrafluoropropene.
16. A mobile air conditioning system comprising the heat transfer composition of claim 13 .
17. A heat transfer system comprising the heat transfer composition of claim 13 .
18. A method of transferring heat to or from a fluid or body comprising contacting the fluid or body with the heat transfer composition of claim 13 .