Refrigeration – Refrigeration producer
Reexamination Certificate
2008-07-22
2008-07-22
Jones, Melvin (Department: 3744)
Refrigeration
Refrigeration producer
C062S335000
Reexamination Certificate
active
07401475
ABSTRACT:
A thermodynamic system that can approximate the Ericsson or Brayton cycles and operated in reverse or forward modes to implement a cooler or engine, respectively. The thermodynamic system includes a device for compressing a first fluid stream containing a first gas-liquid mixture having a sufficient liquid content so that compression of the gas within the first gas-liquid mixture by the compressing device is nearly isothermal, and a device for expanding a second fluid stream containing a second gas-liquid mixture having a sufficient liquid content so that expansion of the gas within the second gas-liquid mixture by the expanding device is nearly isothermal. A heat sink is in thermal communication with at least the liquid of the first gas-liquid mixture for transferring heat therefrom, and a heat source is in thermal communication with at least the liquid of the second gas-liquid mixture for transferring heat thereto. A device is provided for transferring heat between at least the gas of the first gas-liquid mixture after the first fluid stream exits the compressing device and at least the gas of the second gas-liquid mixture after the second fluid stream exits the expanding device. The compressing and expanding devices are not liquid-ring compressors or expanders, but instead are devices that tolerate liquid flooding, such as scroll-type compressors and expanders.
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Jason Hugenroth, Jim Braun, Eckhard Groll, Galen King; “Liquid-Flooded Ericsson Cycle Cooler: Part 1—Thermodynamic Analysis”; International Refrigeration and Air Conditioning Conference; Jul. 17-20, 2006.
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Braun James E.
Groll Eckhard A.
Hugenroth Jason J.
King Galen B.
Hartman Domenica N.S.
Hartman Gary M.
Hartman & Hartman P.C.
Jones Melvin
Purdue Research Foundation
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