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Rankine cycle load limiting through use of a recuperator bypass

United States Patent

August 16, 2011
View the Complete Patent at the US Patent & Trademark Office
A system for converting heat from an engine into work includes a boiler coupled to a heat source for transferring heat to a working fluid, a turbine that transforms the heat into work, a condenser that transforms the working fluid into liquid, a recuperator with one flow path that routes working fluid from the turbine to the condenser, and another flow path that routes liquid working fluid from the condenser to the boiler, the recuperator being configured to transfer heat to the liquid working fluid, and a bypass valve in parallel with the second flow path. The bypass valve is movable between a closed position, permitting flow through the second flow path and an opened position, under high engine load conditions, bypassing the second flow path.
Ernst; Timothy C. (Columbus, IN)
Cummins, Inc. (Columbus, IN)
12/ 058,810
March 31, 2008
The U.S. Government has a paid-up license in this invention and the right in limited circumstances to require the patent owner to license others on reasonable terms as provided for by the terms of (DE-FC26-05NT42419) awarded by (Dept. of Energy).