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MAGNETIC REFRIGERATION SYSTEM WITH UNEQUAL BLOWS

United States Patent Application

20160076797
A1
View the Complete Application at the US Patent & Trademark Office
A magnetic refrigeration apparatus includes one or more beds of magnetocaloric material, each having a hot side and a cold side. The apparatus also includes a magnet to apply a time-varying magnetic field to the one or more beds of magnetocaloric material, a heat transfer fluid, a means to circulate the heat transfer fluid, a hot side heat exchanger (HHEX), a cold side heat exchanger (CHEX), and a controller to control the flow of heat transfer fluid from the cold side of the one or more beds to the hot side of the one or more beds when the magnetic field on the one or more beds is high at an average flow rate of .PHI..sub.H for a duration .DELTA.t.sub.H. The controller also controls the flow of heat transfer fluid from the hot side of the one or more beds to the cold side of the one or more beds when the magnetic field on the one or more beds is low at an average flow rate of .PHI..sub.C for a duration .DELTA.t.sub.C where .DELTA.t.sub.C>.DELTA.t.sub.H and .PHI..sub.C<.PHI..sub.H and .DELTA.t.sub.H.PHI..sub.H=.DELTA.t.sub.C.PHI..sub.C.
Boeder, Andre Michael (Monona, WI), Chell, Jeremy Jonathan (Madison, WI), Jacobs, Steve Alan (Madison, WI), Leonard, John Paul (Cambridge, WI), Auringer, Jon Jay (Poynette, WI), Zimm, Carl Bruno (Madison, WI), Mueller, Bryant Wayne (Madison, WI)
14/ 567,835
December 11, 2014
FEDERAL FUNDING STATEMENT [0002] This invention was made with Government support under DE-AR0000128 awarded by U.S. Department of Energy. The U.S. Government has certain rights in this invention.