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NON-AZEOTROPIC WORKING FLUID MIXTURES FOR RANKINE CYCLE SYSTEMS

United States Patent Application

20130174552
A1
View the Complete Application at the US Patent & Trademark Office
A power generation system includes a non-azeotropic working fluid mixture and a Rankine cycle system. The Rankine cycle system includes a turbine generator that is driven by vapor of the first working fluid mixture, and a condenser that exchanges thermal energy between the vapor received from the turbine generator and a cooling medium. The working fluid mixture is characterized by a condenser temperature glide during phase change between approximately five degrees and thirty degrees Kelvin, a condensing pressure between approximately one tenth of one percent and eleven percent of a critical pressure of the working fluid mixture, and a condenser bubble point temperature between approximately one degree and nine degrees Kelvin greater than a temperature at which the cooling medium is received by the condenser.
Mahmoud, Ahmad M. (Bolton, CT), Radcliff, Thomas D. (Vernon, CT), Lee, Jaeseon (Glastonbury, CT), Luo, Dong (South Windsor, CT), Cogswell, Frederick J. (Glastonbury, CT)
UNITED TECHNOLOGIES CORPORATION (Hartford CT)
13/ 345,330
January 6, 2012
[0001] This invention was made with government support under Contract No. DE-EE0002770 awarded by the United States Department of Energy. The government may have certain rights in the invention.