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U.S. Department of Energy
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Dewar and removable refrigerator for maintaining liquiefied gas inventory

Patent ·
OSTI ID:6589447

A cryostat is described for maintaining an inventory of a liquefied cryogen including a vacuum jacketed reservoir (Dewar) containing heat shields in the vacuum jacket, the heat shields cooled to different temperatures and a cryogen recondenser cooled by a cryogenic refrigerator. Included in the cryostat is an access passage to place objects in the cryogen and to support the refrigerator, the access passage including means to remove the refrigerator without opening the liquid cryogen to ambient atmosphere.

Assignee:
Air Products and Chemicals Inc
Patent Number(s):
US 4223540
OSTI ID:
6589447
Country of Publication:
United States
Language:
English