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 system for dispensing a cryogenic fluid includes a bulk storage tank configured to contain a supply of the cryogenic fluid. A heat exchanger coil is positioned in the headspace of at least one intermediate fluid tank, which contains an intermediate fluid, and is configured to receive and warm a cryogenic fluid from the bulk storage tank via heat exchange with intermediate fluid vapor in the headspace. A buffer tank receives fluid from the heat exchanger coil. A chiller coil is positioned within the intermediate fluid tank and is submerged within intermediate fluid liquid contained within the at least one intermediate fluid tank. The chiller coil receives fluid from the buffer tank and cools it via heat exchange with intermediate fluid liquid within which the chiller coil is submerged for dispensing.

A recovery cryostat, external to a cryogen storage tank, uses a cryocooler to condense vapor of cryogen from the storage tank and return the cryogen to the storage tank as a liquid. The process may be continuous or cyclical depending on the orientation of the recovery cryostat. If the recovery cryostat is located such that liquid can drain back to the storage tank, the process can be continuous. If the liquid cannot be drained back, a valve on the liquid return line is closed while the cryocooler condenses the vapor, a valve on the vapor supply line is then closed, the valve on the liquid return line is opened, and pressure in the recovery cryostat is increased to drive the liquid out. The storage tank is a type that can have vapor that boils off external to the tank be returned to the vapor space above the liquid in the tank.

Provided is a device for implementing a space environment. More specifically, in order to implement a space environment, while a shroud is disposed inside a vacuum container, an internal pressure of the shroud is controlled to adjust a saturation temperature of working fluid by forming a closed system including a cryogenic refrigerator. As a result, the environment can be implemented at a required temperature. At this time, the pressure can be adjusted by supplying room-temperature gas as working fluid into the closed system, which may result in costs being reduced because there is no need to manage a liquid bombe, and the working fluid injected inside can be used in a recycled manner.

A cryopump has a cryogenic refrigerator with cold and colder stages that cool a radiation shield, a primary cryopumping array and a frontal array. The frontal array is coupled to the cold stage and is spaced from and wrapped around the frontally facing envelope of the primary cryopumping array. The frontal array may be recessed from the frontal opening and closer to the primary cryopumping array than to the frontal opening.

A method of generating a pressurized, sub-cooled mixed-phase cryogen is disclosed, including providing a cryogenic system including a reservoir containing a liquid cryogen; and a heat exchange coil immersed in the liquid cryogen, the heat exchange coil having an input end and an output end not immersed in the liquid cryogen; introducing a pressurized gas cryogen to the input end of the heat exchange coil; cooling the pressurized gas cryogen within the heat exchange coil; and collecting the pressurized gas cryogen at an output end of the heat exchange coil.

A compressor unit includes: a reciprocating compressor main body having a drive portion and a compression portion driven by the drive portion to compress a hydrogen gas; an electric motor that is a power source of the drive portion; a hydrogen supply flow path which is connected to a suction side flow path and to the compressor main body and through which a hydrogen gas flows; a fuel cell module that is disposed in the hydrogen station, generates electric power using a hydrogen gas guided through the hydrogen supply flow path, and supplies the generated electric power to the electric motor; and an inverter that adjusts a rotation speed of the electric motor.

The present invention discloses a liquid air storage device, including a storage tank, a gas circulation outlet pipe, a gas circulation inlet pipe, and a pump. An input end of the gas circulation outlet pipe communicates with the lower part of an inner cavity of the storage tank, an output end of the gas circulation outlet pipe communicates with an input end of the pump, an output end of the pump communicates with an input end of the gas circulation inlet pipe, and an output end of the gas circulation inlet pipe communicates with the upper part of the inner cavity of the storage tank. The present invention further discloses a liquid air storage method and an air liquefaction apparatus that use the foregoing liquid air storage device.

A cryopump has a cryogenic refrigerator with cold and colder stages that cool a radiation shield, a primary cryopumping array and a frontal array. The frontal array is coupled to the cold stage and is spaced from and wrapped around the frontally facing envelope of the primary cryopumping array. The frontal array may be recessed from the frontal opening and closer to the primary cryopumping array than to the frontal opening.

The present disclosure relates to devices and methods for the storage of material at cryogenic temperatures. Such devices may be useful for storing materials in the vapor space of a cryogenic dewar at a stable temperature and for preventing temperature excursions that may otherwise occur during refilling of a dewar with liquid cryogen. In some implementations, the devices may include a cryogen space holding liquid cryogen and gas, a separate storage space containing only gas, and a separate path for gas to leave the cryogen space during cryogen refills without passing through or substantially disturbing the temperature of the storage space. Some implementations further provide for passage of gas from the cryogen space to the storage space between cryogen refills to improve cryogen utilization efficiency.