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Composition of zeotropic mixtures having predefined temperature glide

United States Patent

9,039,923
May 26, 2015
View the Complete Patent at the US Patent & Trademark Office
A composition of a zeotropic mixture has a first chemical constituent and at least one second, different chemical constituent. The zeoptropic mixture has a temperature glide of 5.degree. C.-25.degree. C. with regard to its saturated vapor temperature and its saturated liquid temperature. The first chemical constituent is selected from 1,1,1,3,3-pentafluoropropane, 1,1,2,2,3-pentafluoropropane, 1,1,1,3,3-pentafluorobutane, methyl perfluoropropyl ether, 1,1,1,2,3,3-hexafluoropropane and 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone.
Mahmoud; Ahmad M. (Bolton, CT), Lee; Jaeseon (Glastonbury, CT), Luo; Dong (South Windsor, CT)
United Technologies Corporation (Hartford, CT)
13/ 396,102
20130207021
February 14, 2012
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with government support under contract number DE-EE0002770 awarded by the U.S. Department of Energy. The government has certain rights in the invention.