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US 8,911,641 B2Granted
Heat transfer compositions
AssigneeMexichem Amanco Holding S.A. de C.V.
InventorRobert E. Low
Life of this patent
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Abstract
A heat transfer composition comprising trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)), carbon dioxide (R-744) and a third component selected from difluoromethane (R-32), 1,1-difluoroethane (R-152a), fluoroethane (R-161), 1,1,1,2-tetrafluoroethane (R-134a), propylene, propane and mixtures thereof.
Claims67
A heat transfer composition comprising:
- trans-1,3,3,3-tetrafluoropropene (R-1234ze(E));
- greater than zero and up to about 12% by weight carbon dioxide (R-744, CO2);
- and
- a third component selected from a group consisting of propylene, propane and mixtures thereof, wherein the composition has an evaporator temperature glide of less than about 10 K.
1 more element
Dependencies are inferred from the claim text.