Abstract: The invention relates to an installation and a process for production of a cryogenic fluid, in particular of liquefied hydrogen, comprising, positioned in at least one cold box, a set of heat exchangers in thermal exchange with the circuit for hydrogen to be cooled, the installation comprising a device for pre-cooling, which is configured to pre-cool the circuit for gas to be cooled to a first determined temperature, and a device for cryogenic cooling which is configured to cool the circuit for gas to be cooled to a second determined temperature, lower than the first temperature, the cycle gas cooling unit and/or the cycle gas heating unit comprise(s) one or more first cycle heat exchangers distinct from the first part of the pre-cooling heat exchangers of the circuit for the gas to be cooled, these first cycle heat exchangers also being cooled by thermal exchange with the pre-cooling fluid circuit of the pre-cooling device.

Abstract: Device for storing and transferring cryogenic fluid, comprising at least one elementary container comprising a liquefied gas tank, the tank being provided with a first pipe for transferring fluid, which pipe has a first end connected to an upper end of the tank, the tank being provided with a second pipe for transferring fluid, which pipe has a first end connected to a lower end of the tank, the first and the second transfer pipes each comprising an assembly of respective valves, characterized in that the first transfer pipe comprises two arms forming two second ends connected in parallel to the first end of the first transfer pipe, the two second ends of the first transfer pipe each being provided with a respective fluidic connection coupling, and in that the second transfer pipe comprises two arms forming two second ends connected in parallel to the first end of the second transfer pipe, the two second ends of the second transfer pipe each being provided with a respective fluidic connection coupling.

Abstract: Plant and method for storing and distributing pressurized liquefied cryogenic fluid, comprising a liquefied gas source and a distribution member, comprising a first fluid inlet connected to the liquefied gas source and a second end intended to be connected to a user of the pressurized liquefied gas supplied by the distribution member, the source comprising a first liquefied gas store configured to store and supply the liquefied gas to the distribution member at a first determined pressure, the source comprising a second liquefied gas store configured to store the liquefied gas at a second determined pressure which is lower than the first pressure, the plant comprising a connecting pipe having a valve assembly connecting the first and second liquefied gas stores, the plant comprising a filling pipe having a valve assembly and having a first end connected to the second liquefied gas store and a second end intended to be connected to a mobile store for supplying liquefied gas to fill the source.

Abstract: The invention relates to a liquefied gas storage facility, in particular for liquid hydrogen, comprising a liquefied gas tank intended to contain gas in liquid form and a gaseous phase, a device for cooling the contents of the tank, the cooling device comprising at least a first refrigerator with a cycle for refrigerating a cycle gas, said first refrigerator comprising, arranged in series in a cycle circuit: a member for compressing the cycle gas, a member for cooling the cycle gas, a member for expanding the second cycle gas and a member for reheating the expanded cycle gas, the cooling device comprising a first heat transfer fluid loop comprising a first end exchanging heat with a cold end of the first refrigerator and a second end comprising a first heat exchanger located in the tank, the first heat transfer fluid loop comprising a member for circulating the heat transfer fluid, characterized in that the first heat exchanger exchanges heat directly with the inside of the tank, that is to say that the first

Abstract: A tank for storing liquefied gas, having a shell delimiting a storage volume extending in a main direction which is horizontal in the use configuration of the tank, the tank comprising multiple deflecting walls in the storage volume which extend in an offset manner in the main direction configured to force the fluid to perform at least one back-and-forth movement in the main direction as the fluid passes between the lower end and the upper end of the storage volume, wherein a plurality of these deflecting walls are located in the lower half of the storage volume.

Abstract: Device for storing and transferring cryogenic fluid, comprising at least one elementary container comprising a liquefied gas tank, the tank being provided with a first pipe for transferring fluid, which pipe has a first end connected to an upper end of the tank, the tank being provided with a second pipe for transferring fluid, which pipe has a first end connected to a lower end of the tank, the first and the second transfer pipes each comprising an assembly of respective valves, characterized in that the first transfer pipe comprises two arms forming two second ends connected in parallel to the first end of the first transfer pipe, the two second ends of the first transfer pipe each being provided with a respective fluidic connection coupling, and in that the second transfer pipe comprises two arms forming two second ends connected in parallel to the first end of the second transfer pipe, the two second ends of the second transfer pipe each being provided with a respective fluidic connection coupling.

Abstract: The invention primarily concerns a facility for storing and cooling a liquefied gas, for example a liquefied natural gas, the facility comprising at least one tank configured to contain the liquefied gas, a closed cooling circuit configured to be supplied with liquefied gas in the liquid state coming from the tank, at least one injection member configured for reinjecting cooled liquefied gas into the tank, the facility being characterized in that it comprises at least one connection line configured to recover a cooled gas from at least one remote container that is separate and independent from the facility.

Abstract: Disclosed is a refrigeration and/or liquefaction method using a system that includes a low-temperature refrigeration device comprising a working circuit which forms a loop and contains a working fluid, the working circuit forming a cycle comprising, connected in series: a compression mechanism, a cooling mechanism, an expansion mechanism and a heating mechanism the refrigeration device further comprising a cooling exchanger for extracting heat from the useful fluid stream by exchanging heat with the working fluid flowing in the working circuit, the system comprising a pipe through which the useful fluid stream flows in the cooling exchanger, the method comprising a cooling step in which the refrigeration device is in a first operating mode for cooling the cooling exchanger while a useful fluid stream flows in the cooling exchanger, the method comprising, after said cooling step, a step of cleaning impurities that have solidified in the cooling exchanger, characterized in that during the cleaning step, the ref

Abstract: Disclosed is a low-temperature refrigeration device comprising a working circuit that forms a loop and contains a working fluid, the device further comprising a cooling exchanger for extracting heat from at least one member by exchanging heat with the working fluid, the working circuit forming a cycle comprising, connected in series: a compression mechanism, a cooling mechanism, an expansion mechanism and a heating mechanism, wherein the mechanism for cooling the working fluid and the heating mechanism comprise a common heat exchanger in which the working fluid flows in opposite directions in two separate transit portions of the circuit according to whether it is cooled or heated, the device being designed to ensure equal mass flow rates in the two transit portions in the common heat exchanger, the device also comprising a bypass for bypassing one of the two transit portions, said bypass comprising a bypass valve which, in the open state, changes the mass flow rate in one of the two transit portions.

Abstract: The invention relates to a method for cooling and/or liquefying a user fluid flow the method using a cooling and/or liquefying system comprising a low-temperature refrigeration device, the refrigeration device comprising a working circuit forming a loop and containing a working fluid, the refrigeration device comprising a cooling exchanger intended to extract heat from the user fluid flow by heat exchange with the working fluid circulating in the working circuit, the working circuit forming a cycle comprising, in a series: a compression mechanism a cooling mechanism, an expansion mechanism, and a reheating mechanism, the system comprising a pipe for circulation of the user fluid flow to be cooled in heat exchange with the cooling exchanger of the refrigeration device, the method comprising a step of cooling a user fluid flow in the cooling exchanger and after this cooling step, a step of cleaning impurities solidified in the cooling exchanger, the cleaning step comprising stopping of the refrigeration device

Abstract: A plant for the production of liquefied methane having, arranged in series, a means for the generation of methane from hydrogen and carbon dioxide, a means for drying the gas mixture produced by the methane generation means, a purification means configured to remove carbon dioxide from the gas mixture dried in the drying means, a liquefier configured to liquefy the methane contained in the gas mixture purified in the purification means, and a liquefied gas storage facility configured to store the methane liquefied by the liquefier.

Abstract: An installation and method for purifying and liquefying natural gas having, arranged in series, an adsorption purification unit, a unit for separating hydrocarbons by refrigeration, and a liquefier. The installation has a gas power plant for combined production of heat and electricity by hydrocarbon combustion. The installation has at least one electrical member, with the power plant being electrically connected to at least one of the electrical members in order to supply them with electrical energy.

Abstract: A method for storing and distributing liquefied hydrogen using an installation having a storage facility for liquid hydrogen, a source of gaseous hydrogen, a liquefier having an inlet connected to the source and an outlet connected to the liquid hydrogen storage facility, the storage facility having a liquid withdrawal pipe having an end connected to the liquid hydrogen storage facility and an end configured to be connected to at least one mobile tank, the method having a stage of liquefying gaseous hydrogen and a stage of transferring the liquefied hydrogen to the storage facility, wherein the liquefied hydrogen has a temperature below the bubble point of hydrogen at the storage pressure and further having a stage of transfer of liquid hydrogen directly to the tank at a temperature between the saturation temperature at the pressure of the liquid and a temperature above the solidification temperature of the hydrogen.

Abstract: Installation and method for storing and dispensing liquefied hydrogen involving a source of gaseous hydrogen, a liquefier, and two storage reservoirs for liquid hydrogen at determined respective storage pressures, wherein the liquefier includes an inlet connected to the source and an outlet connected in parallel, via a set of valves, to a respective inlet of each storage reservoir.

Abstract: The invention relates to a method for adjusting a cryogenic refrigeration apparatus including a plurality of liquefiers/refrigerators arranged in parallel in order to cool a single device. The method includes a step of calculating in real time the dynamic mean value of at least one operating parameter for all the liquefiers/refrigerators. The apparatus controlling in real time the at least one valve for controlling the stream of working gas of at least one liquefier/refrigerator in accordance with the difference between the instantaneous values of the parameter relative to said dynamic converge toward said dynamic mean value.

Abstract: The invention relates to a facility for producing liquid helium from a source gas mixture substantially comprising nitrogen and helium. The facility includes a cryogenic purifier including a system for separating the nitrogen from the source gas mixture with a view to producing helium at a temperature lower than the temperature of the source gas. The facility also includes a helium liquefier that subjects the helium to a work cycle including, in series: compressing the helium, cooling and decompressing the compressed helium, and reheating the cooled, decompressed helium. The facility includes a helium transfer pipe connecting an outlet of the purifier to an inlet of the liquefier in order to transfer helium produced by the purifier into the work cycle of the liquefier. The facility is characterized in that the cryogenic purifier includes a decompression system that includes an inlet to be connected to a source of pressurized nitrogen gas.

Abstract: The invention relates to a method for low-temperature cooling/liquefaction of a working fluid, in particular a working fluid including helium or consisting of pure helium by means of a refrigerator/liquefier that includes a working circuit provided with a compressor station and a cold box. The refrigerator/liquefier subjects the working gas within the working circuit to a cycle that includes, in series: compressing the working fluid within the compressor station, cooling and decompressing the working fluid in the cold box, and heating the working fluid with a view to the return thereof to the compressor station. The compressor station includes one or more compression levels, each one using one or more compressors mounted on landings.

Abstract: Installation and method for storing and dispensing liquefied hydrogen involving a source of gaseous hydrogen, a liquefier, and two storage reservoirs for liquid hydrogen at determined respective storage pressures, wherein the liquefier includes an inlet connected to the source and an outlet connected in parallel, via a set of valves, to a respective inlet of each storage reservoir.

Abstract: A device for refrigerating and/or liquefying a working gas comprising helium, the device comprising a looped working circuit for the working gas includes, in series, a compression station, a cold box, a heat exchange system exchanging heat between the cooled working gas and a user, the device further comprising an additional pre-cooling system comprising at least one tank of auxiliary cryogenic fluid, such as liquid nitrogen, the cold box comprising a first cooling stage of the working gas comprising a first exchanger disposed at the output of the compression station as well as a second heat exchanger and a third heat exchanger, the first heat exchanger being of the aluminum plate-fin type, the second heat exchanger being of the tube or welded plate type, characterized in that the second and third heat exchangers are connected both serially and in parallel on the working circuit downstream of the first heat exchanger.

Abstract: Refrigeration device comprising a working circuit in a loop for the working gas and comprising, in series: a compression station, a cold box, a system for the exchange of heat between the cooled working gas and a point of use, a system for the additional pre-cooling of the working gas leaving the compression station comprising an auxiliary cryogenic fluid volume, the cold box comprising a first cooling stage for the working gas comprising a first and a second heat exchanger, these being connected both in series and in parallel to the working circuit at the outlet of the compression station, the first cooling stage also comprising a third heat exchanger selectively exchanging heat with the auxiliary fluid, characterized in that the third heat exchanger is connected both in series and in parallel to the first and to the second heat exchangers, the working circuit comprising a recuperation pipe fitted with at least one valve and which connects the outlet of the third heat exchanger to the second heat exchanger.