摘要:
Apparatus providing at least one thermoelectric device for pressurizing a liquefied gas container and methods employing same are disclosed. A thermoelectric device including a heating surface and a cooling surface is used for pressurizing a container by vaporizing liquefied gas within the container by transferring heat energy from a portion of the liquefied gas in contact with the cooling surface to another portion of the liquefied gas in contact with the heating surface of the thermoelectric device to convert some of the liquefied gas to a vapor state. Liquefied gas vapor and/or liquid phase may be supplied by disclosed apparatus and methods. The apparatus may also be used as a vapor pump or a liquid pump, or fluid pump. Methods of operation are also disclosed.
摘要:
The present invention relates to a method and an apparatus for storing liquefied gas in at least one insulated container (1) while withdrawing evaporated gas from one or more of the at least one container (1), wherein at least a part of the evaporated gas is supplied to a recondenser (11) and wherein liquefied gas is withdrawn from one or more of the at least one container (1) and at least in part supplied to the recondenser (11) for recondensing the evaporated gas supplied to the recondenser (11) such that recondensed gas is obtained at a recondenser outlet, wherein before supplying the iquefied gas to the recondenser (11), the liquefied gas is subcooled by passing it through a refrigeration unit (8, 9), at least a part of the subcooled liquefied gas being supplied to the recondenser (11), and wherein at least a part of the recondensed gas obtained at the outlet of the recondenser (11) is reintroduced into one or more of the at least one container (1).
摘要:
Station for supplying a flammable fluid fuel comprising a first cryogenic tank (2) for storing fuel in the form of a cryogenic liquid, a second cryogenic tank (3) for storing an inert gas, a cooling circuit (4, 14) in a heat-exchange relationship with the first tank (2), the cooling circuit (4, 14) comprising an upstream end connected to the second cryogenic tank (3) for drawing cryogenic fluid from the second cryogenic tank (3) in order to give up frigories from the fluid of the second cryogenic tank (3) to the first tank (2), the station comprising a circuit (7) for withdrawing fluid derived from the second tank (3), characterized in that the cooling circuit comprises two pipes (4, 14) comprising an upstream end connected to the second tank (3), the two pipes (4, 14) each being provided with a respective exchanger (9, 10) housed in the first tank (2), the two exchangers (9, 10) being respectively situated in the upper and lower parts of the first tank.
摘要:
A fuel storage and distribution system for a gas-fueled sea-going vessel includes a thermally insulated gas tank for storing liquefied gas fuel. A local heat transfer circuit is configured to extract heat from an external heat source circuit. As a part of said local heat transfer circuit a heating arrangement is configured to heat gas fuel for increasing pressure inside the gas tank. As a part of said local heat transfer circuit is a main gas evaporator for evaporating liquefied gas fuel drawn from the gas tank for delivery to an engine of the sea-going vessel.
摘要:
A method is provided for producing a tank, in particular a motor vehicle tank, for storing a fuel in a low-temperature state. The tank has an inner tank receiving the fuel, an outer skin surrounding the inner tank and an insulating layer arranged between the inner tank and the outer skin. The method i) introduces fuel into the inner tank, a temperature of 30° C. to 120° C., preferably of 70° C. to 85° C., being obtained by the fuel in the inner tank, and ii) generates negative pressure in an insulating layer arranged between the inner tank and the outer skin.
摘要:
A thermal interface between a removable cryogenic refrigerator (4) and an article (10) to be cooled by the cryogenic refrigerator. The thermal interface consists of a recondensing chamber filled with a gas (12), the recondensing chamber being in thermal contact with a cooling surface (9) of the refrigerator and the article (10) to be cooled.
摘要:
Disclosed is a system and method of filling a fuel gas storage tank, which houses a fuel gas storage material, with a fuel gas such as natural gas or hydrogen gas. The fuel gas storage tank includes an inlet, and outlet, and at least one filter tube disposed in the tank interior that fluidly communicates with at least one of the inlet or the outlet. The at least one filter tube defines a flow passage on its inside and is permeable to fuel gas such that fuel gas can diffuse from the flow passage inside the filter tube to outside of the filter tube. When filling the fuel gas storage tank, a flow of fuel gas is passed through the flow passage so that some of the fuel gas can diffuse out of the filter tube an into the tank interior for charging into the fuel gas storage material.
摘要:
A pressure management system for a storage tank of liquefied natural gas (LNG) is disclosed. The storage tank includes an outlet, an ullage space, and a condenser coil. The pressure management system includes a boil-off gas (BOG) shut-off valve, an expansion valve, a vortex tube, and a combustor. The BOG shut-off valve connected to the outlet, facilitate passage of a BOG stream when the storage tank is at a threshold pressure. The BOG stream is expanded in the expansion valve and passed through the vortex tube to split the BOG stream into a hot stream and a cold stream. The cold stream is passed through the condenser coil present in the ullage space of the tank to cool and condense the BOG inside the storage tank. The hot stream and the cold stream are combusted in the combustor to produce power.
摘要:
A method for filling a fuel tank with liquefied gas includes liquefied gas being brought into the tank so that gas in introduced to a lower section of the tank below the surface of the liquefied gas in the tank, and during a first phase of the filling procedure while gas is introduced to a lower section of the tank the pressure of the tank is maintained below a predetermined set pressure by spraying of liquefied gas into a gas space in the upper section of the tank above the surface of the liquefied gas in the tank. At a predetermined state of the filling procedure a second phase of the procedure is initiated during which the spraying liquefied gas into a gas space in the upper section of the tank is decreased and the second phase is practised until a predetermined filling stage of the tank is reached.
摘要:
A method is provided for producing a tank, in particular a motor vehicle tank, for storing a fuel in a low-temperature state. The tank has an inner tank receiving the fuel, an outer skin surrounding the inner tank and an insulating layer arranged between the inner tank and the outer skin. The method i) introduces fuel into the inner tank, a temperature of 30° C. to 120° C., preferably of 70° C. to 85° C., being obtained by the fuel in the inner tank, and ii) generates negative pressure in an insulating layer arranged between the inner tank and the outer skin.