Patent ID: 8069687

Claim:
A working medium for refrigeration processes, comprising at least one sorbent material and at least one refrigerant, wherein the sorbent material comprises at least one nonvolatile organic salt which is liquid under standard conditions, or a mixture of organic salts which is liquid under standard conditions, and wherein said nonvolatile organic salt or said mixture of organic salts is thermally stable above 150Â° C. and comprises an anion from the group consisting of alkyl and aryl tosylates, fluoroalkyl tosylates, nitrate, sulfate, hydrogensulfate, alkyl and aryl sulfates, polyether sulfates and polyethersulfonates, fluoroalkyl sulfates, alkyl and arylsulfonates, fluorinated alkyl and arylsulfonates, alkyl and aryl carboxylates, fluoroalkyl carboxylates, cyanate, polyetherphosphates and dicyanamide anion.