Skip to Content
Find More Like This
Return to Search

Cascaded organic rankine cycles for waste heat utilization

United States Patent

7,942,001
May 17, 2011
View the Complete Patent at the US Patent & Trademark Office
A pair of organic Rankine cycle systems (20, 25) are combined and their respective organic working fluids are chosen such that the organic working fluid of the first organic Rankine cycle is condensed at a condensation temperature that is well above the boiling point of the organic working fluid of the second organic Rankine style system, and a single common heat exchanger (23) is used for both the condenser of the first organic Rankine cycle system and the evaporator of the second organic Rankine cycle system. A preferred organic working fluid of the first system is toluene and that of the second organic working fluid is R245fa.
Radcliff; Thomas D. (Vernon, CT), Biederman; Bruce P. (West Hartford, CT), Brasz; Joost J. (Fayetteville, NY)
UTC Power, LLC (South Windsor, CT)
11/ 886,281
20080168772
March 29, 2005
STATEMENT OF GOVERNMENT INTEREST The United States Government has certain rights in this invention pursuant to Contract No. DE-FC02-00CH11060 between the Department of Energy and United Technologies Corporation.