Patent ID: 8033120

Claim:
A method of cooling air comprising: (a) providing a heat transfer fluid comprising at least one lubricant and a refrigerant comprising a fluoroalkene of Formula I: XCF z R z-3 (I) where X is a C 2 or a C 3 unsaturated, substituted, alkyl radical, each substituent and each R is independently F, or H, and z is 1 to 3, provided that (i) said fluoroalkene of Formula I has at least four fluorine substituents has a terminal unsaturated carbon atom and has at least one H on said unsaturated terminal carbon, (ii) said lubricant and said refrigerant have one liquid phase at least one temperature between about −50° C. and +70° C. measured at 5% by weight of lubricant based on the weight of the refrigerant and lubricant, and (iii) said refrigerant has a Global Warming Potential (GWP) of not greater than about 75; and (b) cooling said air by vaporizing said refrigerant by causing heat to be transferred from the air being cooled to said heat transfer fluid.