SYSTEM AND METHOD FOR STORAGE AND DELIVERY OF CRYOGENIC LIQUID AIR
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United States of America Patent
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Issued Date -
Feb 5, 2015
app pub date -
Apr 5, 2012
filing date -
Apr 5, 2011
priority date (Note) -
Abandoned
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Abstract
An apparatus for storing liquid air (a cryogenic mixture of about 80% liquid nitrogen and about 20% liquid oxygen) in a stable condition within a storage vessel by providing a heat exchanger in fluid communication with vaporized liquid air within vessel condense the vaporized liquid air back to liquid form. This will result in condensing the nitrogen-rich vapor into the mass as a liquid, thereby reducing ullage pressure, cooling the mass, and ultimately precluding oxygen-enrichment through boil-off. A cryocooler may be mounted externally to the vessel and in fluid communication with an interior of the vessel to condense liquid air vaporized within the vessel. The system may be used to supply air to safe haven areas of a mine or building, or piped in through a building HVAC system and/or mounted on vehicle.
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