A hydrogen tank assembly is provided for use in vehicles, such as aircraft. The hydrogen tank assembly has an inner tank wall, an outer tank wall, and an inert gas source. The inner tank wall defines a hydrogen tank volume that is surrounded by a shroud volume which is defined by the outer tank wall. The hydrogen tank volume is filled with cryogenic hydrogen and has a higher pressure than the shroud volume that is filled with an inert gas, such as helium. The counter-pressure of the inert gas prevents micro-cracks in the inner tank wall and increases the in-service life.

A cryogenic cooling system includes a gas circulation source; a cryocooler that cools a cooling gas; a cooling gas flow path that causes a cooling gas to flow from the gas circulation source to the object to be cooled; and a control device that controls the gas circulation source so as to execute initial cooling of the object to be cooled according to a prescribed flow rate pattern. The prescribed flow rate pattern is predetermined such that the cooling gas flows through the cooling gas flow path at a first average flow rate, and the cooling gas flows through the cooling gas flow path at a second average flow rate. The second average flow rate is smaller than the first average flow rate such that the cooling capacity of the cryogenic cooling system is increased.

A tank, in particular for a liquid hydrogen reservoir, provided with at least one dome fixed by way of an outer welded joint and having a central portion provided with at least one free end including a first connecting element and at least one dome provided with an open end including a second connecting element, the dome and the central portion being able to be joined together, the first connecting element and the second connecting element being configured to form, when the central portion and the dome are joined together, a protruding tab extending toward the outside of the tank and able to be welded to a protruding end, such a protruding tab making it possible in particular to join together the tank, this being done entirely from the outside of said tank, and to easily mount and dismount the dome, in particular without accessibility issues.

A cryogenic fluid delivery manifold system includes a plurality of cryogenic supply tanks. A liquid flow manifold permits flow of liquid a use device. A vapor pressure manifold is coupled to the supply tanks and to a pusher tank for regulating and/or balancing pressure across the plurality of supply tanks.

A cryogenic fluid delivery manifold system includes a plurality of cryogenic supply tanks. A liquid flow manifold permits flow of liquid a use device. A vapor pressure manifold is coupled to the supply tanks and to a pusher tank for regulating and/or balancing pressure across the plurality of supply tanks.

The disclosure relates to a method and apparatus for cooling, preferably liquefying a boil off gas (BOG) stream from a liquefied cargo in a floating transportation vessel, said liquefied cargo having a boiling point of greater than −110° C. at 1 atmosphere and comprising a plurality of components, said method comprising at least the steps of: compressing a boil off gas stream (01) from said liquefied cargo in two or more stages of compression comprising at least a first stage (65) and a final stage (75) to provide a compressed BOG discharge stream (06), wherein said first stage (65) of compression has a first stage discharge pressure and said final stage (75) of compression has a final stage suction pressure and one or more intermediate, optionally cooled, compressed BOG streams (02, 03, 04) are provided between consecutive stages of compression; cooling the compressed BOG discharge stream (06) to provide a cooled vent stream (51) and a cooled compressed BOG stream (08); expanding, optionally after further cooling, a portion of the cooled compressed BOG stream (08) to a pressure between that of the first stage discharge pressure and the final stage suction pressure to provide an expanded cooled BOG stream (33); heat exchanging the expanded cooled BOG stream (33) against the cooled vent stream (51) to provide a further cooled vent stream (53).

A novel tank cryogenic-compatible composite pressure vessel that beneficially utilizes Vapor Cooled Shielding (VCS) is introduced to minimize thermal gradients along support structures and reduces heat loads on cryogenic systems. In particular, the configurations and mechanisms to be utilized herein include: providing for a desired number of passageways and a given thickness of the VCS, reducing the thermal conductivity of the VCS material, and increasing the cooling capacitance of the hydrogen vapors.

The present invention relates to a system and a method for supplying fuel and, more particularly, to a system and a method for supplying fuel, characterized in that LNG is pumped and supplied to a ship engine and, when the internal pressure of a pressure-resistant tank rises above the necessary pressure of the ship engine, the BOG is supplied to the ship engine, thereby controlling the internal pressure of the pressure-resistant tank, and an eductor is arranged at a point, at which lines that supply LNG and BOG join with each other, upstream of the ship engine such that the lines that supply LNG and BOG can be controlled simultaneously.

The present invention relates to a system and a method for supplying fuel and, more particularly, to a system and a method for supplying fuel, characterized in that LNG is pumped and supplied to a ship engine and, when the internal pressure of a pressure-resistant tank rises above the necessary pressure of the ship engine, the BOG is supplied to the ship engine, thereby controlling the internal pressure of the pressure-resistant tank, and an eductor is arranged at a point, at which lines that supply LNG and BOG join with each other, upstream of the ship engine such that the lines that supply LNG and BOG can be controlled simultaneously.

A transport container for helium, with an inner container for receiving the helium, a coolant container for receiving a cryogenic liquid (N.sub.2), an outer container, in which the inner container and the coolant container are contained, a thermal shield, in which the inner container is contained and which can be actively cooled with the aid of a liquid phase of the cryogenic liquid (LN.sub.2), the thermal shield having at least one first cooling line, in which the liquid phase of the cryogenic liquid can be received for actively cooling the thermal shield, and an insulating element, which is arranged between the outer container and the thermal shield and which can be actively cooled with the aid of a gaseous phase of the cryogenic liquid (GN.sub.2), the insulating element having at least one second cooling line, in which the gaseous phase of the cryogenic liquid can be received.