A gas filling apparatus with excellent filling efficiency through a downsized gas pipe cooling section. A gas filling apparatus 1 of the present disclosure includes; a main unit 2 having a filling mechanism for transporting a gas from a gas supply source through a primary pipe 71 while measuring a flow rate of the gas and a gas pipe cooling section 41 for cooling a gas pipe in which a gas from the filling mechanism is introduced; and a hose unit 3 having a filling hose 34 connected to a secondary pipe 72 lead from the gas pipe cooling section and a gas filling nozzle attached to an end of the filling hose, wherein the gas pipe cooling section is made of copper alloy. The pipe cooling section can be disposed at a connecting portion between the secondary pipe and the filling hose, and plurality of the filling mechanisms can be mounted, and to each filling mechanism is independently mounted the gas pipe cooling section. The gas pipe cooling section can be accommodated in a vessel 42 with vacuum insulation structure, and to the vessel is connected a pipe 44 for communicating a vacuum portion 42a of the vessel with a diffusion pipe through a safety valve 43.

An underground storage tank maintenance system includes a system of monitors to determine pressure and humidity in the system. Inert gas may be supplied into the ullage of the tank. The inert gas may first pass through an interstitial space as between the primary storage and secondary containment, and then passed into ullage to capture contaminants on the way out of the vent to atmosphere. The system and method prevent hydrocarbons exiting to atmosphere. Humidity sensors may be set along vent to determine water contamination and trigger drying cycles. Pressure readings help identify system leaks.

The present invention relates to a computer-implemented method and system for computing a transition parameter of a liquefied gas storage medium, the storage medium having at least one sealed and unrefrigerated tank, the transition parameter characterizing an evolution of a two-phase mixture contained in the sealed and unrefrigerated tank between an initial state and a final state, the two-phase mixture including a liquid phase and a vapour phase, the transition parameter may be a duration of the transition, a liquid bleeding rate or a vapour bleeding rate.

Apparatus, methods and technologies are described for utilizing a liquid organic hydrogen carrier (LOHC) fueling station to supply fresh or hydrogen laden LOHC and to recover spent or hydrogen depleted LOHC liquid fuels from mobile vehicles and tanker trucks to support the use of LOHC as carbon-neutral hydrogen fuels to power vehicles, to generate and store electricity, to generate and capture hydrogen, and to replace the use of conventional hydrocarbon fuels while maintaining an overall carbon-neutral balance with respect to the environment. The disclosure includes apparatus, methods and technologies to resupply a modular LOHC fueling station, to store, dispense and recover LOHC fuels, and to transfer the LOHC liquid fuels while balancing displaced vapors to maintain an overall carbon-neutral environmental footprint.

A rack includes a first upper hook that opens upward and a first lower hook that opens downward, wherein the first upper and lower hooks are vertically aligned. Two or more permanent magnets are physically secured to the rack, wherein the permanent magnets are positioned to simultaneously magnetically engage a side surface of a cylindrical gas tank and magnetically secure the rack to the side surface of the cylindrical gas tank. A hose may be wound about the first and second hooks in a side-to-side configuration. In one option, the rack may include a second upper and lower hooks that extend in opposing lateral directions to receive separate hoses. In another option, the rack may be formed with tubular metal and the permanent magnets may be disposed inside vertical sections of the tubular metal. That rack may also secure a gas flow meter.

A hydrogen storage system may include a storage container storing liquid hydrogen, a supply line connected to the storage container and to a fuel cell system, the supply line supplying gaseous hydrogen to the fuel cell system from the storage container, a compressor mounted in the supply line and compressing the gaseous hydrogen, a bypass line connecting the supply line and the storage container and allowing the gaseous hydrogen to flow from the supply line to the storage container, a control valve mounted in the bypass line and selectively adjusting a bypass flow rate of the gaseous hydrogen, an orifice provided in the bypass line, and a controller configured to control the control valve, accurately adjusting a supply pressure of the storage container and a supply amount of the hydrogen to be supplied to the fuel cell system based on the operation conditions of the fuel cell system.

A metering device for attaching to a container configured to store a fluid, the device including: a valve configured to control the amount of fluid dispensed from the container; a user interface comprising at least one control configured to operate the valve between an open position and a closed position; and a control circuit configured to set a threshold amount of the fluid to be dispensed from the container, where the control circuit is configured to override the user interface and close the valve when the threshold amount of fluid to be dispensed has been reached.

An emergency breakaway coupling, which is a disconnect coupling, is configured such that a first coupler and a second coupler thereof are connected under normal conditions and the first coupler and the second coupler are disconnected during an emergency. A disconnect detecting device includes a detecting piece and a moving piece that are arranged in the emergency breakaway coupling. The disconnect detecting device detects the disconnect of the emergency breakaway coupling due to the movement of the moving piece from the detecting piece. The detecting piece and the moving piece are arranged in the emergency breakaway coupling such that a moving direction O2-O2 of the moving piece moving from the detecting piece is in parallel with a disconnecting direction O1-O1 of the first coupler disconnecting from the second coupler.

A filling apparatus that does not significantly reduce a required pressure immediately after a start of hydrogen filling, and can reliably fill fuel cell vehicles and the like. The filling apparatus (100) includes a control unit (10), and the control unit (10) has a function of boosting pressure required from a hydrogen filling apparatus (100) to a rear facility (200) until initial pressure measurement is completed. The control unit (10) may have a function of determining whether or not communication filling is established, and when communication filling is established, setting a pressure higher than an internal pressure of a tank received from a vehicle side by a predetermined pressure (for example, 5 MPa) as a pressure required for the rear facility (200) at an initial stage of filling.

A computer-controlled method of automatically purging and precooling a hydrogen fuel line prior to transferring hydrogen fuel from a source to a storage tank includes purging moisture from a hydrogen fuel line. The hydrogen fuel line is configured to fluidically couple a hydrogen tanker storage tank and a fueling station storage tank, the hydrogen storage tanker storage tank and the fueling station storage tank configured to store liquid hydrogen. The method also includes pre-cooling the hydrogen fuel line, causing hydrogen fuel to flow through the hydrogen fuel line to re-fill the fueling station storage tank, and expelling residual hydrogen fuel from the hydrogen fuel line when the fueling station storage tank re-filling is complete.