L'air Liquide, Soci&#xe9;t&#xe9; Anonyme Pour L'etude Et L'exploitation Des Proc&#xe9;d&#xe9;s Georges Claude

L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des

L'air Liquide, Societe Anonyme a Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude

Centre National De La Recherche Scientifique

Nantes Université

Ecole Des Mines De Nantes

Pierre Briend

Fabien Durand

Jean-Marc Bernhardt

David Grillot

Eric Fauve

Gerald Aigouy

Elise Renou

Frederic Castellanet

Cindy Deschildre

Bruno Alban

Franck Delcayre

Jean-Claude Villard

Vincent Heloin

Jean-Claude Boissin

Dominique Thers

Robert Moracchioli

Véronique Grabie

Jacques Chabanne

Simon Saulquin

Guy Gistau Baguer

Olivier Weitten

Yves Pecoud

Gérald Aigouy

Jean-Sébastien Stutzmann

Serge Bassetto

Denis Jahan

Henri Chevrel

Wan-Ting Chen

Elena Aprile

The invention relates to a liquefied-fluid storage tank including a storage wall the inner surface of which defines a storage volume for liquefied fluid, the tank including an exchanger for cooling the fluid contained in the tank in particular to condense vapors of said fluid. The invention is characterized in that the cooling exchanger includes a body of metal, in particular aluminum, in which at least one pipe of a coolant circuit is integrated in order to cool said body and in that the body is in contact with and attached to the outer surface of the storage wall.

Liquefied-fluid storage tank

A method for the pulsating load refrigeration of a component of a Tokamak using a refrigeration device subjecting a working fluid to a working cycle. At least one 'periodic and symmetrical' operating mode of the Tokamak includes an operating mode in which plasmas of preset duration Dp are generated periodically with intervals of duration Dnp between two successive plasmas. Dnp=Dp&#xb1;30%. The cooling device cooling power is increased to a relatively high level in a plasma generation phase and reduced to a relatively low level when the Tokamak is no longer in a plasma generation phase. The refrigerating power variation brings gradual increases and reductions in refrigerating power. The increase in the refrigeration device refrigerating power is triggered in advance, in response to a signal (S) generated during a plasma starting step before the thermal load on the component increases.

Refrigeration method and apparatus with a pulsating load

The invention relates to a method and device for pulsed charge cooling of a component of a Tokamak. The method uses a refrigeration device that subjects a working fluid such as helium to a work cycle including: compression, cooling, and decompression, as well as heat exchange with the member and heating. The refrigeration power produced by the refrigeration device is increased to a relatively high level when the Tokamak is in a plasma generation phase and is decreased to a relatively low level when the Tokamak is no longer in a plasma generation phase. The increase in refrigeration power produced by the refrigeration device is automatically triggered in response to a signal produced during a step for starting plasma in the Tokamak.

Method and equipment for pulsed charge cooling of a component of a tokomak

The present invention relates to a process for the purification by adsorption of a feed flow rich in methane and comprising at least carbon dioxide.

Final biogas purification process

A method and device for the cryogenic separation of a methane-rich flow is provided.

Method and device for the cryogenic separation of a methane-rich flow

The invention relates to an exchanger, advantageously a plate exchanger, comprising counter-current parallel exchange sections (). According to the invention, the exchange section for the water () has an essentially constant cross-section, whereas the exchange section () for the cryogen has a reduced inlet region () enabling the possible formation of ice () in the water passage () to be concentrated on a small volume, without blocking said water passage. The invention can especially be applied to the supply of gaseous hydrogen stored in a liquid form to an on-board power generating device in a vehicle.

Cryogen/water heat exchanger and the application thereof to the supply of gas to an on-board power unit in a vehicle

In order to deliver ultrapure helium to a utilization line (1), helium is withdrawn, in liquid or supercritical form, from a storage tank (3), it is filtered in this liquid or supercritical form (at 4), the filtered helium is vaporized and the resulting helium gas is sent to the utilization line (1). The process is applicable to the cooling of integrated-circuit wafers.

Process and installation for delivering ultra-pure helium

Method of reliquefying gaseous helium produced when transferring liquid helium from a donor container (R1) to a receiver container (R2), characterized in that a stream of gaseous helium is bled off from a point in a compression unit (10) intended for charging with gaseous helium under pressure, this stream of gaseous helium is cooled by heat exchange with the gaseous helium intended for the compression unit (10) and the compressed gaseous helium thus cooled is expanded in order to obtain reliquefied helium.

Method of and plant for reliquefying gaseous helium

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Seyssinet, France

Pierre Briend