A ship comprises: a liquefied gas storage tank; a multi-stage compressor for compressing a boil-off gas discharged from a storage tank and comprising a plurality of compression cylinders; a second heat exchanger for heat exchanging a fluid, which has been compressed by the multi-stage compressor, and thus cooling same; a first decompressing device for expanding a flow (flow a1) partially branched from the flow (flow a) that has been cooled by the second heat exchanger; a third heat exchanger for heat exchanging, by flow a1 which has been expanded by the first decompressing device as a refrigerant, the remaining flow (flow a2) of flow a after excluding flow a1 that has been branched and thus cooling same; and a second decompressing device for expanding flow a2 which has been cooled by the third heat exchanger.

A method of fueling a transporter with liquefied fuel gas includes providing a transporter having a fuel gas storage tank for holding a liquefied fuel gas, a sub-cooler fluidly connected to the fuel gas storage tank, and a consumer. Liquefied fuel gas from the fuel gas storage tank is pumped into the subcooler to create subcooled liquefied fuel gas. The subcooled liquefied fuel gas may then be introduced into the fuel gas storage tank, for example by spraying into a vapor space of the fuel gas storage tank. Liquefied fuel gas is pumped from the fuel gas storage tank to provide pressurized liquefied fuel gas, the pressurized liquefied fuel gas is vaporized and the vaporized fuel gas is provided to the consumer for propelling the means of transport using the vaporized fuel gas as a fuel.

A method for machining workpieces, having a cryogenic fluid intake in a machining zone, including locating a valve on the line connecting a fluid source to a machining tool in the machining zone, the valve self-regulates the degree of opening according to the pressure required downstream thereof, the valve is located inside a cold box for implementing the cryogenic fluid and provides a fixed and adjustable pressure, and a fixed adjustable flow, to the machining tool, irrespective of the tool that is used, and the number of orifices and the diameter of the fluid ejection orifices in the tool.

A system for dispensing cryogenic liquid to a use point includes a bulk tank containing a supply of carbon dioxide or other cryogenic liquid and a pressure builder that is in communication with the tank via a pressure building valve. The pressure builder uses heat exchangers to vaporize a portion of the cryogenic liquid as needed to pressurize the bulk tank. The pressurized cryogenic liquid is dispensed through a dispensing line running from the bottom of the tank. A vent valve also vents vapor from the tank to control pressure. Operation of the vent and pressure building valves is automated by a controller that receives data from sensors. The controller determines the required saturation pressure for the tank and varies the tank pressure to match and provide a generally constant outlet pressure depending on conditions of the cryogenic liquid.

Method for delivering liquefied gas, especially hydrogen, by means of at least one mobile storage facility, especially a storage facility transported by lorry, comprising a step of filling the mobile storage facility with liquefied gas at a source plant, the mobile storage facility containing, after filling, liquefied gas and a fraction of the vaporized gas, the method comprising a movement of the mobile storage facility from the source plant to a receiving station and a transfer of liquefied gas from the mobile storage facility to the receiving station, characterized in that it comprises a step of interim cooling of the liquefied gas contained in the mobile storage facility between the source plant and the receiving station by means of a cooling device comprising a liquefied gas tank and a refrigerating element.

This fluid storage and transfer system includes a first storage tank and second storage tank configured to contain cryogenic liquids. The first storage tank has a heat exchanger. A second cryogenic liquid from the second storage tank subcools a first cryogenic liquid in the first storage tank and pressurizes the first storage tank. The first storage tank is then further pressurized using the heat exchanger. The first cryogenic fluid is transferred from the first storage tank to an end point. In an example, the first cryogenic fluid is liquefied natural gas and the second cryogenic fluid is liquid nitrogen.

A device and a method for keeping a liquefied gas store cold having a cryogenic refrigerator, a subcooling circuit having an aspiration end intended to be seated in a liquefied gas store, a heat exchanger exchanging heat between the aspirated subcooling circuit and the refrigerator, the subcooling circuit having at least one injection end configured to inject the fluid cooled in the heat exchanger into the store, the device further including a boil-off gas recovery pipe having an upstream end intended to be connected to the store to recover the boil-off gas, the recovery pipe comprising a downstream end intended to be connected to a consumer, the device having a bypass pipe and a set of valves configured to enable boil-off gas to be transferred from the recovery pipe to the subcooling circuit.

A method for controlling the operating pressure of a liquid carbon dioxide receiving facility is disclosed, the method comprising unloading liquid carbon dioxide from a transport vessel to the liquid carbon dioxide receiving facility, storing the liquid carbon dioxide in a temporary storage at the liquid carbon dioxide receiving facility, pumping the liquid carbon dioxide from the temporary storage to permanent geologic storage or external use, and managing pressure in the temporary storage using at least some of the carbon dioxide liquid phase.