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OPERATION OF A CASCADE AIR CONDITIONING SYSTEM WITH TWO-PHASE LOOP

United States Patent Application

20160258657
A1
View the Complete Application at the US Patent & Trademark Office
A method of operating a heat transfer system includes starting operation of a first heat transfer fluid vapor/compression circulation loop including a fluid pumping mechanism, a heat exchanger for rejecting thermal energy from a first heat transfer fluid, and a heat absorption side of an internal heat exchanger. A first conduit in a closed fluid circulation loop circulates the first heat transfer fluid therethrough. Operation of a second two-phase heat transfer fluid circulation loop is started after starting operation of the first heat transfer fluid circulation loop. The second heat transfer fluid circulation loop transfers heat to the first heat transfer fluid circulation loop through the internal heat exchanger and includes a heat rejection side of the internal heat exchanger, a liquid pump, and a heat exchanger evaporator. A second conduit in a closed fluid circulation loop circulates a second heat transfer fluid therethrough.
Feng, Yinshan (South Windsor, CT), Wang, Jinliang (Ellington, CT), Zhao, Futao (Farmington, CT), Verma, Parmesh (South Windsor, CT), Radcliff, Thomas D. (Vernon, CT)
15/ 029,824
August 14, 2014
FEDERAL RESEARCH STATEMENT [0001] This invention was made with government support under contract number DE-EE0003955 awarded by the Department of Energy. The government has certain rights in the invention.