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AssigneeAir Products and Chemicals, Inc.
InventorsThomas W. Schuck, Stanley L. Morton, David J. Chalk, Xianrui Huang, Lawrence Vincent Bischke, Shaun Patrick O'Shea
Estimating the term…
An apparatus and method for precooling a mass to be cooled to a final low temperature by immersion in a cryogenic liquid, e.g. liquefied helium. The gaseous phase of the cryogenic liquid is cooled by heat exchange with a cryogenic liquid having a higher boiling point than the cryogenic liquid within which the mass is to be immersed. The cooled gaseous phase is circulated through a vessel containing the mass, recovered, recooled and recirculated until the mass and its containment vessel are at the desired precooling temperature. Thereafter cryogenic liquid can be introduced into the vessel to immerse the mass.
A method for precooling a mass to be immersed in a cryogenic liquid to a temperature below ambient temperature comprising the steps of:
An apparatus for precooling a mass to be cooled to a final low temperature by immersion in a cryogenic liquid comprising in combination:
Dependencies are inferred from the claim text.