Patent ID: 6557359
Filing Date: 2003-05-06
Classification: C08J,C09K,Y10S

Abstract:
A process to cool a region or object using a vapor compression cycle, which process comprises:(A) condensing a refrigerant mixture heating or cooling equipment to produce a liquid in a first region followed by dissipation of the heat generated; (B) transferring the condensed refrigerant mixture of step (A) to a second region or object to be cooled; (C) evaporating the condensed refrigerant mixture in the second region or object, which results in cooling of the second region or object; and (D) optionally transferring the evaporated refrigerant mixture to the first region of step (A) to be condensed and recycled, wherein said refrigerant mixture is an azeotrop-like mixture, which mixture comprises: (a) pentafluoropropane; and (b) a hydrofluorocarbon of the formula; CxFYHzwherein X is 3, 4, 5 or 6 and y and z are each independently 1 or a positive whole number such that the result of y / (y+z) is greater than 0.67.