High specific surface area aerogel cryoadsorber for vacuum pumping applications

Patent · Sat Jan 01 00:00:00 EST 2000

OSTI ID:873256

Hill, Randal M ^[1]; Fought, Eric R ^[2]; Biltoft, Peter J ^[1]

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1. Livermore, CA
2. Brentwood, CA

A cryogenic pumping system is provided, comprising a vacuum environment, an aerogel sorbent formed from a carbon aerogel disposed within the vacuum environment, and cooling means for cooling the aerogel sorbent sufficiently to adsorb molecules from the vacuum environment onto the aerogel sorbent. Embodiments of the invention include a liquid refrigerant cryosorption pump, a compressed helium cryogenic pump, a cryopanel and a Meissner coil, each of which uses carbon aerogel as a sorbent material.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 6122920
• OSTI ID: 873256
• Country of Publication: United States
• Language: English

Related Subjects

specific
surface
aerogel
cryoadsorber
vacuum
pumping
applications
cryogenic
provided
comprising
environment
sorbent
formed
carbon
disposed
cooling
means
sufficiently
adsorb
molecules
embodiments
liquid
refrigerant
cryosorption
pump
compressed
helium
cryopanel
meissner
coil
material
vacuum pumping
specific surface
cryogenic pump
cooling means
carbon aerogel
liquid refrigerant
sorbent material
vacuum environment
vacuum pump
pumping applications
sorption pump
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