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US 5,205,134 AGranted
Gas liquefaction process and refrigeration plant
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorGuy Gistau-Baguer
Life of this patent
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Abstract
The liquefaction process comprises the stages of pre-cooling (3) the gas, of cooling it by heat exchange (6, 7, 8) and by fractional expansion (10, 11), under supercritical conditions, then of expanding it in a turbine (9) which delivers a volume of subcooled liquid (2). The process is especially applicable to the refrigeration of superconductive elements.
Claims4
A refrigeration plant having a cooling circuit of a fluid having a low boiling point comprising, serially arranged:
- a pre-cooling stage,
- a refrigeration stage comprising, in series, a first heat exchanger, a first turbine, a second heat exchanger, a second turbine, and a third heat exchanger,
- a downstream dynamic expansion device, and
- a liquid fluid reservoir.
1 more element
Dependencies are inferred from the claim text.