Cryogenic piping system

Details Cryogenic piping system Cryogenic piping system

2007-12-11

2007-12-11

Doerrler, William C (Department: 3744)

Refrigeration

Storage of solidified or liquified gas

Liquified gas transferred as liquid

C138S148000

Reexamination Certificate

active

10941807

ABSTRACT:
A method for improving the insulation characteristics of a cryogenic piping system wherein an insulation volume defined by a jacket coaxial to an inner pipe is evacuated to a moderate vacuum and then filled with a condensable gas in one or more evacuation and filling cycles, and then, after evacuation to a moderate vacuum, the condensable gas is condensed to effect a high vacuum within the insulation volume.

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