Patent ID: 8707720

Claim:
A process for adjusting the temperature of an object, medium or a space comprising (a) absorbing refrigerant vapor with an absorbent to form a mixture; (b) heating the mixture to separate refrigerant, in vapor form, from the absorbent and increase the pressure of the refrigerant vapor; (c) condensing the refrigerant vapor under pressure to a liquid; (d) reducing the pressure of the liquid refrigerant, and evaporating the refrigerant to form first and second portions of refrigerant vapor; (e-1) mechanically increasing the pressure of the first portion of refrigerant vapor, and then repeating step (c) to subject the first portion of refrigerant vapor to condensation to liquid; and (e-2) repeating step (a) to re-absorb, with the absorbent, the second portion of refrigerant vapor; wherein the absorbent comprises one or more ionic liquids; and wherein the refrigerant is selected from one or more members of the group consisting of hydrofluorocarbons, N 2 , O 2 , CO 2 , Ar, H 2 and non-fluorinated hydrocarbons, wherein a non-fluorinated hydrocarbon is selected from the group consisting of C 1 to C 4 straight-chain, branched or cyclic alkanes and C 1 to C 4 straight-chain, branched or cyclic alkenes.