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Organic rankine cycle system for use with a reciprocating engine

United States Patent

January 17, 2006
View the Complete Patent at the US Patent & Trademark Office
In a waste heat recovery system wherein an organic rankine cycle system uses waste heat from the fluids of a reciprocating engine, provision is made to continue operation of the engine even during periods when the organic rankine cycle system is inoperative, by providing an auxiliary pump and a bypass for the refrigerant flow around the turbine. Provision is also made to divert the engine exhaust gases from the evaporator during such periods of operation. In one embodiment, the auxiliary pump is made to operate simultaneously with the primary pump during normal operations, thereby allowing the primary pump to operate at lower speeds with less likelihood of cavitation.
Radcliff; Thomas D. (Vernon, CT), McCormick; Duane (Colchester, CT), Brasz; Joost J. (Fayetteville, NY)
UTC Power, LLC (South Windsor, CT)
10/ 462,855
June 17, 2003
FEDERALLY SPONSORED RESEARCH 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-FC02-00CH11060 awarded by the Department of Energy.