To enable a hydrogen tank to be efficiently filled with hydrogen even when the hydrogen tank has a large capacity, hydrogen filling at the nozzle flow is prohibited when the nozzle flow of a nozzle is larger than the receptacle flow of a receptacle or when the receptacle flow is unknown under the condition that the nozzle and the receptacle can be connected to each other.

An operating method is provided for a cryopressure tank in which cryogenic hydrogen for supplying a motor vehicle fuel cell can be stored under supercritical pressure at 13 bar or more. In order to compensate the pressure drop resulting from removal of hydrogen from the cryopressure tank, either a heat transfer medium is supplied to a heat exchanger provided in the cryopressure tank via a control valve over a period of time which significantly exceeds the cycle times of a conventional cycle valve or the heat transfer medium is not supplied to the heat exchanger. Depending on the fill level of the cryopressure tank, the control valve is actuated with respect to a desired temperature or a desired pressure of the hydrogen in the cryopressure tank. As long as there is a risk of liquefaction of the residual hydrogen in the cryopressure tank, as is the case when the temperature falls below the critical temperature of 33 K if the pressure drops below the critical pressure of approximately 13 bar, during the removal of cryogenic hydrogen from the cryopressure tank, the temperature is adjusted such that it does not drop below the critical temperature of 33 Kelvin. If the fill state in the cryopressure tank drops further, the pressure in the cryopressure tank is adjusted when there is no longer a risk of liquefaction such that the pressure does not drop below a minimum pressure value which the hydrogen that is removed from the cryopressure tank must have in order to be usable in the consumer without restricting the function thereof.

A fluid system for a vehicle is provided. The fluid system is configured to couple to a chassis of the vehicle. A frame assembly of the fluid system is configured to couple with the chassis directly or with another component that is coupled, directly or indirectly, with the chassis. A cowling of the fluid system can enclose a fuel pressure vessel and an auxiliary fluid vessel. The auxiliary fluid vessel is configured to be placed in fluid communication with the component powered or operated by the fluid therein.

The system heats glycol water using steam generated by a boiler and heating LNG using the glycol water, thereby increasing efficiently the LNG to temperature required for an engine. In addition, the system senses LNG flowing to a glycol tank using a pressure sensor, etc. when the LNG flows to the glycol tank due to pressure difference between a fuel supplying line and a glycol circulation line generated according as a heat exchanger is broken down, and outputs the flowed LNG to the outside. As a result, the glycol circulation line may be returned to original state and stability of the system may be enhanced.

Some variations provide a pressure vessel comprising: a chamber for processing a material under a chamber pressure up to 5000 bar; an end cap disposed at one end of the pressure chamber; an interior seal plate disposed between the end cap and the chamber volume; and a plurality of pressure-vessel keys disposed between the end cap and an outer ring. At a chamber pressure greater than atmospheric, the end cap exerts a force against the keys to automatically and reversibly actuate a pressure-vessel seal. Conversely, at atmospheric pressure or less, the keys and end cap are easily removable. Essentially, the pressure in the vessel is utilized as an in situ mechanical force to automatically actuate a safe and efficient seal. Process cycle times are significantly reduced because the vessel is not opened and closed using tooling. Throughputs are increased, improving economics of pressure vessels for extraction, reaction, or other processes.

A method monitors a pressure tank system of a stationary vehicle. The method detects a wake-up situation by use of sensor data of a main sensor of the vehicle. Furthermore, in reaction to the detection of a wake-up situation, the method activates a further resource for detecting and/or for evaluating sensor data with regard to the pressure tank system. Moreover, the method determines, by use of the further resource, whether one or more protective measures are to be carried out in relation to the pressure tank system and/or the surroundings thereof.

A method for supplying helium to at least one end user is disclosed by feeding helium from at least one container of helium to an end user through at least one supply system, wherein a mass flow meter and a pressure transmitter, in electronic communication with a programmable logic controller measures an amount of helium being supplied to the at least one user, provides the amount to the programmable logic controller which provides a signal to the at least one end user of an amount of helium that remains in the at least one container and the temperature therein.

A service device for a pressure vessel system of a motor vehicle includes a service-device-side refueling coupling part which is connectable to a motor-vehicle-side refueling coupling part of the motor vehicle and a controller for activating the pressure vessel system. A method for the service of the pressure vessel system includes producing a connection between the service device and the pressure vessel system and activating the pressure vessel system by the service device.

An apparatus to refuel a vessel with cryo-compressed hydrogen is disclosed herein. The apparatus includes a refueler controller configured to defuel the vessel prior to a refuel process based on a pressure of the vessel; fill a mixing tank with at least the cryo-compressed hydrogen based on the pressure of the vessel and a pressure of the mixing tank, wherein the mixing tank is connected upstream of the vessel and is structured to include the cryo-compressed hydrogen; initiate the refuel process of the vessel; adjust a temperature of the mixing tank in response to a temperature of the vessel not satisfying a target temperature of the vessel during the refuel process, wherein the temperature of the mixing tank is to be adjusted based on an increase or a decrease of flow of supercritical hydrogen; and end the refuel process in response to the pressure of the vessel satisfying a target pressure of the vessel.

The invention relates to a transport container (1) for helium (He), comprising an inner container (6) for receiving the helium (He); a coolant container (14) for receiving a cryogenic fluid (N2); an outer container (2) in which the inner container (6) and the coolant container (14) are received; a thermal shield (21) in which the inner container (6) is received and which can be actively cooled using the cryogenic fluid (N2), said thermal shield (21) having at least one cooling line (26) which is fluidically connected to the coolant container (14) and in which the cryogenic fluid (N2) can be received in order to actively cool the thermal shield (21); and at least one return line (34, 35), by means of which the at least one cooling line (26) is fluidically connected to the coolant container (14) in order to return the cryogenic fluid (N2) back to the coolant container (14).