Devices and methods for producing liquid air
AssigneeFertileSafe Ltd
InventorAmir Arav
Life of this patent
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Abstract
Methods and devices for continuously producing liquid air. One embodiment includes bringing a first container confining an unpressurised first volume coupled to outer air in contact with a first cryogenic medium, and maintaining a temperature of the first cryogenic medium substantially higher than the boiling temperature of the first cryogenic medium for affecting continuous production of liquid air.
Claims20
A device for continuously producing liquid air from outer air in atmospheric pressure, the device comprising:
- a first container comprising:
- a first boundary having high thermal conductivity and a first opening;
- the first boundary confines a first volume and is configured to conduct heat from an inner side of the first boundary to an outer side thereof, thereby to cool inner air confineable in the first volume;
- the first opening is configured to couple the first volume with the outer air external to the first volume;
- the first opening is further configured to allow flow of outer air into the first volume;
- a filter, coupled to the first opening, configured to clean the outer air flowing into the first volume via the first opening from contaminants;
- the first container is configured to keep internal pressure of the inner air substantially not higher than the atmospheric pressure, without actively compressing the inner air;
- and
- a second container comprising a second volume configured to contain liquid nitrogen and to have the first container immersed in the liquid nitrogen for bringing the first container in thermal contact with the liquid nitrogen, thereby passively cooling the first container;
- wherein the device is configured to continuously produce the liquid air by passively cooling the inner air thereby passively condensing a portion of the inner air to yield the liquid air, and allowing flow of outer air into the first volume while maintaining a pressure of the inner air substantially equal to the atmospheric pressure.
A method for continuously producing liquid air from outer air in atmospheric pressure without using a compressor, the method comprising:
- bringing a first container in contact with a first cryogenic medium, the first container comprises a first boundary having high thermal conductivity and confining an unpressurised first volume, thereby cooling inner air internal to the first volume and allowing condensation of a portion of the inner air to liquid air;
- maintaining the first volume coupled to the outer air thereby allowing flow of outer air into the unpressurised first volume;
- filtering out outer air contaminating elements from flowing into the first volume;
- and
- maintaining temperature of the first cryogenic medium at a level at which the first cryogenic medium boils;
- thereby continuously producing liquid air from the inner air without actively compressing the inner air by a compressor.
Dependencies are inferred from the claim text.