Abstract: Dilution refrigeration device and method comprising a loop working circuit containing a working fluid comprising a mixture of helium-3 (3He) and helium-4 (4He), the working circuit comprising, arranged in series and fluidically connected via a first set of pipes, a mixing chamber, an evaporator and transfer member, the first set of pipes being configured to transfer the working fluid from an outlet of the mixing chamber to an inlet of the evaporator and from an outlet of the evaporator to an inlet of the transfer member, the working circuit comprising a second set of pipes connecting an outlet of the transfer member to an inlet of the mixing chamber, the working circuit comprising at least a first heat-exchange portion for exchange of heat between at least part of the first set of pipes and the second set of pipes, the first heat-exchange portion being situated between the evaporator and the mixing chamber, the device further comprising at least one cooling member in a heat-exchange relationship with the work

Abstract: The present invention relates to a method of capturing carbon dioxide in a fluid comprising at least one compound more volatile than carbon dioxide CO2, for example methane CH4, oxygen O2, argon Ar, nitrogen N2, carbon monoxide CO, helium He and/or hydrogen H2.

Abstract: The present invention relates to a method of capturing carbon dioxide in a fluid comprising at least one compound more volatile than carbon dioxide CO2, for example oxygen O2, argon Ar, nitrogen N2, carbon monoxide CO, helium He and/or hydrogen H2.

Abstract: The present invention relates to a method of capturing carbon dioxide in a fluid comprising at least one compound more volatile than carbon dioxide CO2, for example methane CH4, oxygen O2, argon Ar, nitrogen N2, carbon monoxide CO, helium He and/or hydrogen H2.

Abstract: The invention relates to a cryogenic refrigeration device intended to transfer heat from a cold source to a hot source via a working fluid flowing through a closed working circuit including the following portions in series, namely: a portion for the substantially isothermal compression of the fluid, a portion for the substantially isobaric cooling of the fluid, a portion for the substantially isothermal expansion of the fluid, and a portion for the substantially isobaric heating of the fluid. The compression portion of the working circuit includes at least two compressors disposed in series and the expansion portion of the working circuit includes at least one expansion turbine, said compressors and expansion turbine(s) being driven by at least one high-speed motor including an output shaft.

Abstract: The invention concerns a hydrogen storage installation for feeding fuel cell (11) in particular for motor vehicles, comprising a liquid hydrogen tank including a light insulation shell made of foam (2) incorporating at least one metal screen (3, 4), and a gaseous hydrogen discharge circuit (8) connected to the hydrogen input of the fuel cell (11) and having at least one portion (14; 13) in thermal exchange relationship with the screen (3, 4), the latter being likewise placed in thermal exchange relationship with the cold part (16) of an electrical refrigerating machine (15) supplied with electric current by the fuel cell (11). The invention is applicable to motor vehicles powered by electric power of a fuel cell.

Abstract: The invention relates to a method for producing a reservoir, in particular a cryogenic reservoir, provided with two concentric envelops (1, 3), i.e. the internal (1) and external (3), respectively, defining an interwall space (2) therebetween, wherein said internal space (2) is exposable to a reduced operational pressure and the internal envelop (1) is exposable to an internal positive process.

Abstract: A cryogenic fluid tank comprising an outer envelope (2) and an inner envelope (1), wherein the space between said envelopes is occupied by a multilayered insulation structure (3) wherein the inner envelope (1) is supported on a point of articulation (A) formed by a support structure (6) coupled to the outer envelope (2) and extending into the latter, wherein the point of articulation is located above the center of gravity (G) of the inner envelope. Applications: cryogenic fuel tanks in motor vehicles.

Abstract: The female part (F) receiving the male part (M) comprises internally a tubular guide (4) with which the male part cooperates in a tight sealing manner (joint 20); the male and female parts respectively comprise at the input thereof a pivoting insulation flap (19; 17) which can open in a sequence when the male part penetrates the female part prior to the opening of the flap valves (15; 9) of the portions of the fluid circuit (13,7). The invention can be used to fill tanks of automobiles with cryogenic fluid, particularly liquid hydrogen.

Abstract: An apparatus for extracting cooling power from helium flowing through a cooling system regenerator includes a heat exchanger disposed within the regenerator capable of extracting cooling power from the helium and a thermal link coupled to the heat exchanger for thermally coupling the heat exchanger with a component. A method of extracting cooling power from helium in a regenerator includes flowing the helium through a first portion of the regenerator, flowing the helium through a heat exchanger disposed between the first portion and a second portion of the regenerator to transfer heat from the heat exchanger to the helium, and transferring heat from a component via a thermal link to the heat exchanger.

Abstract: An apparatus for extracting cooling power from helium flowing through a cooling system regenerator includes a heat exchanger disposed within the regenerator capable of extracting cooling power from the helium and a thermal link coupled to the heat exchanger for thermally coupling the heat exchanger with a component. A method of extracting cooling power from helium in a regenerator includes flowing the helium through a first portion of the regenerator, flowing the helium through a heat exchanger disposed between the first portion and a second portion of the regenerator to transfer heat from the heat exchanger to the helium, and transferring heat from a component via a thermal link to the heat exchanger.

Abstract: A gas laser device. The device includes a laser chamber having at least one active gas and a device for purifying gas. The purified gas is in communication with the free exchange of gas with the chamber. This device may be used with high powered gas lasers.

Abstract: A secondary pump unit comprising a mechanical secondary pump and a cryogenic trap, wherein the cryogenic trap forms a ring surrounding the outside of the mechanical secondary pump at its intake end, and the trap is enclosed in a casing defining, in parallel, the intake opening of the mechanical pump and of the cryogenic trap.

Abstract: It comprises a first cylinder (102), a displacement piston (104) sliding in the first cylinder (102), a conduit in which a thermal regenerator is included, a second cylinder (202), a second displacement piston (204) sliding in the second cylinder (202), means for displacing the first cylinder and the second cylinder in phase relation. A gas bearing (104a) is provided at the hot end of the first piston (104) and a gas bearing (104b) is provided at the intermediate temperature end of the first piston. A gas bearing (204b) is also provided at the intermediate temperature end of the second piston (204) and a gas bearing (204a) is provided at the cold end of the second piston (204).