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An azeotropic refrigerant mixture having low GWP and low ODP properties and saving on energy in amounts of from 8% to 17% and consisting of a blend of hydrogen bromide and a fluorohydrocarbon selected from the group consisting of R-123 dichlorotrifluoroethane (CHCl.sub.2 CF.sub.3); R-124 chlorotetra

An azeotropic refrigerant mixture having low GWP and low ODP properties and saving on energy in amounts of from 8% to 17% and consisting of a blend of hydrogen bromide and a fluorohydrocarbon selected from the group consisting of R-123 dichlorotrifluoroethane (CHCl.sub.2 CF.sub.3); R-124 chlorotetrafluoroethane (CHFCICF.sub.3); R-134a tetrafluoroethane (CF.sub.3 CH.sub.2 F); R-142B chlorodifluoroethane (CH.sub.3 CClF.sub.2); R-143a trifluoroethane (CH.sub.3 CF.sub.3); R-152a difluoroethane (CH.sub.3 CHF.sub.2); and R-22 chlorodifluoromethane (CHClF.sub.2), with the HBr component being present in an amount ranging up to less than about 30% by volume, balance fluorohydrocarbon. Preferred blends consist of hydrogen bromide in an amount ranging from between about 8% and 17% by volume.

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[ What is claimed is:] [1.] A refrigerant mixture consisting of a blend of hydrogen bromide and a fluorohydrocarbon selected from the group consisting of R-123 (CHCl.sub.2 CF.sub.3); R-124 (CHFClCF.sub.3); R-134a (CF.sub.3 CH.sub.2 F); R-142B (CH.sub.3 CClF.sub.2) R-143a (CH.sub.3 CF.sub.3); R-152a

[ What is claimed is:] [1.] A refrigerant mixture consisting of a blend of hydrogen bromide and a fluorohydrocarbon selected from the group consisting of R-123 (CHCl.sub.2 CF.sub.3); R-124 (CHFClCF.sub.3); R-134a (CF.sub.3 CH.sub.2 F); R-142B (CH.sub.3 CClF.sub.2) R-143a (CH.sub.3 CF.sub.3); R-152a (CH.sub.3 CHF.sub.2); and R-22 (CHClF.sub.2), wherein the HBr component is present in an a positive amount ranging up to about an amount less than about 30% by volume.