method for heat production and for increasing the maximum viable operating temperature of the condenser, composition and high temperature heat pump device

摘要

A method for producing heat and increasing the maximum viable operating temperature of the high temperature heat pump condenser, composition and device The present invention relates to a method for producing a high temperature heat pump comprising: that of a gaseous operating fluid comprising z-1,1,1,4,4,4-hexafluoro-2-butene, in a condenser, thereby producing a liquid operating fluid. Also described herein is a method of increasing the maximum viable condenser operating temperature in a high temperature heat pump device comprising charging the high temperature heat pump with a second operating fluid comprising z -1,1,1,4,4,4-hexafluoro-2-butene. Also described herein is a composition comprising (a) z-1,1,1,4,4,4-hexafluoro-2-butene, (b) 2-chloropropane, and (c) at least one lubricant suitable for use at a temperature of at least about 150 ° C, where 2-chloro-propane is present in an amount effective to form an azeotropic or azeotropic combination with z-1,14,1, 4,4,4-hexafluoro-2-butene. Also described is a high temperature heat pump device containing an operating fluid comprising z-1,1,1,4,4,4-hexafluoro-2-butene.