Refrigeration – Refrigeration producer
Patent
1986-01-13
1987-06-09
Capossela, Ronald C.
Refrigeration
Refrigeration producer
62514R, 417 48, F25B 100
Patent
active
046710809
ABSTRACT:
The system generally includes an electrochemical pump for pressurizing a cryogenic gas, a heat exchanger for cooling the gas to below its inversion temperature, a Joule-Thomson flow restrictor to cool the gas by adiabatic expansion, a load heat exchanger that is thermally coupled to an electronic component or surface that requires cryogenic cooling, and a low-pressure flow path back to the pump. One or more reservoirs can be provided in the high-pressure and low-pressure flow paths. The flow paths can be thermally coupled by one or more regenerative heat exchangers. The electrochemical pump can be adapted to transport either protons or hydronium ions. Protons are preferably transported using pump components that do not contain water in any chemical form. Either hydrogen or oxygen can serve as the cryogen. Where hydrogen is the cryogen, the high-pressure flow path can be provided with a catalytic surface to convert ortho-hydrogen to para-hydrogen, and the low-pressure flow path can bear a catalyst to promote the reverse reaction.
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Capossela Ronald C.
The Boeing Company
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