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Heat recovery system series arrangements

United States Patent

November 14, 2017
View the Complete Patent at the US Patent & Trademark Office
The present disclosure is directed to heat recovery systems that employ two or more organic Rankine cycle (ORC) units disposed in series. According to certain embodiments, each ORC unit includes an evaporator that heats an organic working fluid, a turbine generator set that expands the working fluid to generate electricity, a condenser that cools the working fluid, and a pump that returns the working fluid to the evaporator. The heating fluid is directed through each evaporator to heat the working fluid circulating within each ORC unit, and the cooling fluid is directed through each condenser to cool the working fluid circulating within each ORC unit. The heating fluid and the cooling fluid flow through the ORC units in series in the same or opposite directions.
Kauffman; Justin P. (Mount Wolf, PA), Welch; Andrew M. (Mount Wolf, PA), Dawson; Gregory R. (York, PA), Minor; Eric N. (New Park, PA)
Johnson Controls Technology Company (Holland, MI)
13/ 358,070
January 25, 2012
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH & DEVELOPMENT This invention was made with Government support under contract number DE-EE0002858 awarded by the U.S. Department of Energy (DOE). The Government has certain rights in the invention.