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07-01-2016 дата публикации

SYSTEM AND METHOD FOR STORAGE AND DELIVERY OF CRYOGENIC LIQUID AIR

Номер: US20160003524A1
Автор: Blalock Clayton E.
Принадлежит:

One aspect of the disclosure provides a system for storing a cryogenic mixture of liquid air and providing a source of breathable air. In an embodiment, the system comprises an insulated storage vessel, a cryocooler, and a vaporizing unit. The insulated storage vessel contains a cryogenic mixture of liquid air comprising liquid nitrogen (LN) and liquid oxygen (LO) The cryocooler is mounted to an exterior of the storage vessel to condense liquid air that vaporizes within the storage vessel, thereby returning the vaporized liquid air to a liquid phase such that concentrations of the LNand LOin the cryogenic mixture remain approximately constant. The vaporizing unit is external of the storage vessel and is in fluid communication with an interior of the storage vessel. Liquid air from the interior of the storage vessel passes through, vaporizes, and exits the vaporizing unit as the breathable air. 1. A system for storing a cryogenic mixture of liquid air and providing a source of breathable air , comprising:{'sub': 2', '2, 'an insulted storage vessel containing a cryogenic mixture of liquid air comprising liquid nitrogen (LN) and liquid oxygen (LO);'}{'sub': 2', '2, 'a cryocooler mounted to an exterior of said storage vessel to condense liquid air that vaporizes within said storage vessel thereby returning said vaporized liquid air to a liquid phase such that concentrations of said LNand LOin the cryogenic mixture remain approximately constant, said returning said vaporized liquid air to said liquid phase also reducing pressure in said storage vessel within a predetermined pressure range; and'}a vaporizing unit, external of said storage vessel in fluid communication with an interior of said storage vessel, and in which said liquid air from said interior of said storage vessel passes through, vaporizes, and exits said vaporizing unit as said breathable air.2. The system of claim 1 , wherein said cryogenic mixture of said liquid air may comprise about 79% of said LNand ...

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Номер записи: 1
05-02-2015 дата публикации

SYSTEM AND METHOD FOR STORAGE AND DELIVERY OF CRYOGENIC LIQUID AIR

Номер: US20150033765A1
Автор: Blalock Clayton E.
Принадлежит:

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. 1. A system for storing a cryogenic mixture of liquid air and providing a source of breathable air , comprising:an insulated storage vessel containing a cryogenic mixture of liquid air comprising liquid nitrogen and liquid oxygen, and the liquid air is maintained within the first storage vessel within a predetermined temperature range; and,a heat exchanger connected to the storage vessel to condense liquid air that vaporizes within the vessel and return to a liquid phase in the cryogenic mixture, and thereby reduce a pressure within the first storage vessel within a predetermined pressure range; and,a vaporizing unit external of the storage in fluid communication with an interior of the vessel and in which liquid air passes and vaporizes and exits the unit as breathable air.2. The system of claim 1 , wherein the heat exchanger is positioned in an ullage space above the liquid air in the storage vessel wherein in a refrigerant is circulated through the heat exchanger causing vaporized air in the ullage space to condense3. The system of claim 1 , wherein the heat exchanger is a cryocooler mounted to an exterior the storage vessel.4. The system of claim 1 , wherein ...

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Номер записи: 2