A system and method for supplying a backup product in an air separation device, as well as a system and method for supplying a lower-pressure product to a user by means of pressurization of a cryogenic liquid pump during normal operation of an air separation device, i.e., when the cryogenic liquid pump is in the cold standby state. By means of the system and method, a cryogenic liquid product taken from a storage tank is pressurized by the cryogenic liquid pump to produce a lower-pressure product by taking full advantage of the low-speed operation of the cryogenic liquid pump in the cold standby state, and the lower-pressure product is transmitted to product supply lines of a user, to achieve the function of supplying the lower-pressure product to the user. The system and method not only reduce the energy loss of the cryogenic liquid pump in the cold standby state for a long time, but also avoid the bleeding rate of the cryogenic liquid product generated by sending a part of the cryogenic liquid product back to the storage tank, so that the advantage of quickly starting the cryogenic liquid pump from the cold standby state is ensured, and the requirements of the user to the higher-pressure product and the lower-pressure product can be satisfied.

A gas supply system (2) includes a compressor unit (21), an accumulator unit (23), a pre-cooling system (24) and a housing (4). In the gas supply system (2), the compressor unit (21) is vertically arranged and the pre-cooling system (24) is arranged above the accumulator unit (23) in the housing (4). The compressor unit (21) and the accumulator unit (23) are covered by one rectangular parallelepiped housing (4).

This method for dispensing cryogenic liquid includes the following steps: connecting, in a sealtight manner, a fuel tank (2) to be filled to a storage tank, dispensing cryogenic liquid to the fuel tank (2) and determining firstly the flow of liquid being dispensed and the amount of liquid dispensed, and secondly the pressure prevailing in the fuel tank (2), stopping the dispensing of the liquid when the pressure exceeds a first predetermined threshold or else when the flow of liquid drops below a second predetermined threshold, degassing the fuel tank (2) after stopping the dispensing, while determining the amount of gas removed from the fuel tank (2) during the degassing, and determining whether or not liquid should be dispensed again on the basis of the amount of gas removed during the degassing.

A constant-pressure storage unit and a method for operating a constant-pressure storage unit, for storing and dispensing hydrogen under constant pressure are disclosed. The constant-pressure storage unit has at least one constant-pressure store, which is divided into two regions by a movable separating piston, at least one liquid pump for conveying a liquid, and at least one liquid store, wherein a measuring device measures the liquid level in the liquid store and sends a signal to the liquid pump by means of a control unit. In this way, the liquid pump can be stopped in time when the constant-pressure storage unit is empty.

A multi-stage gas compression, storage and distribution system utilizing a hydrocarbon gas from a municipal gaseous supply line in a manner that does not affect an operational integrity of said municipal gaseous supply line includes an inlet line fluidly in fluid communication with a supply of hydrocarbon gas at a first pressure, a first compression unit configured to compress the hydrocarbon gas from the inlet line to a second pressure, a first storage vessel configured to receive the hydrocarbon gas from the first compression unit for storage at the second pressure, a second compression unit configured to compress the hydrocarbon gas from the first storage vessel to a third pressure, and a second storage vessel configured to receive the hydrocarbon gas from the second compression unit for storage at the third pressure.

A method for ascertaining the re-starting capability of a vehicle, in particular when parking the vehicle, includes detecting the pressure and the temperature of fuel in a pressurized container, determining a final pressure value of the fuel in the pressurized container, where the final pressure value is an expected pressure of the fuel in the pressurized container after a period of parking of the vehicle, comparing the final pressure value with a minimum pressure value in order to ascertain whether the vehicle is capable of re-starting after the parking period, and generating a warning signal when the final pressure value is lower than the minimum pressure value.

The present invention pertains to a device for controlling a medical gas flow from a cylinder, wherein the device is configured to be releasably attachable to a gas cylinder and wherein the device is capable of identifying a gas cylinder in order to control the opening and closing of a valve comprised in the valve. Accordingly, the device comprises a valve for controlling a gas flow from a gas cylinder, a gas outlet, which is in fluid communication with said valve and positioned downstream of said valve, and a connecting means configured for receiving and releasably connecting a cylinder for providing a fluid connection between a cylinder and said valve. The device furthermore comprises an identifying means for identifying a cylinder, wherein the valve is in communication with the identifying means and is configured to be openable based on the identification of the cylinder.

To provide a hydrogen filling system and a hydrogen filling method capable of preventing hydrogen from being filled at high filling rate in the same manner as the communication filling despite a condition that pressure, temperature and so on in the in-vehicle tank are not precisely grasped. The hydrogen filling system (100) of the present invention includes a control unit (CU1, CU2, CU3) for controlling hydrogen filling, wherein the control unit has a function of judging whether or not there is an abnormality in pressure or temperature data in an in-vehicle tank (IT) at communication filling and a function of stopping the communication filling and converting to non-communication filling when there is an abnormality in the pressure or the temperature data.

A dispensing assembly for a pressure dispense package includes a connector having separate and distinct liquid and extraction conduits, and having a pressurization gas conduit. A liner fitment adapter may include a longitudinal bore to receive a probe portion of a connector defining a liquid extraction conduit, and may include a lateral bore to enable removal of gas. Insertion of a connector into a dispensing assembly simultaneously makes fluidic connections between (a) a gas extraction conduit and a dispensing volume; (b) a liquid extraction conduit and the dispensing volume, and (c) a pressurization gas conduit and a space to be pressurized within a pressure dispense vessel.

A method is provided for refueling a cryogenic pressure vessel of a motor vehicle. The motor vehicle has: a) a cryogenic pressure vessel having an internal vessel which stores a fluid, an external vessel and heat insulation which is arranged between the internal vessel and the external vessel, at least in certain areas; and b) a controller, wherein the controller is designed to interrupt refueling of the motor vehicle if, in the case of damaged thermal insulation, a lower fluid density limiting value for the fluid in the internal vessel is exceeded. The lower fluid density limiting value is lower than an upper fluid density limiting value for the fluid in the internal vessel in the case of refueling of the internal vessel with intact thermal insulation.