A hydrogen station operation method capable of adjusting pressure in a reservoir to the pressure suitable for liquid hydrogen replenishment while cutting hydrogen waste is for replenishing liquid hydrogen into the reservoir in a hydrogen station including: a gasification path partially gasifying liquid hydrogen out of the reservoir and returning it; and a gas delivery path delivering gasified hydrogen in the reservoir into a path between a vaporizer and a compressor or the vaporizer, when the remainder of liquid hydrogen in the reservoir becomes a first threshold or less, by reducing the liquid hydrogen amount flowing through the gasification path by a valve therein, reducing the gasification amount of liquid hydrogen in the reservoir, and increasing the hydrogen gas amount delivered through the gas delivery path from the reservoir by a valve therein, pressure in the reservoir is reduced, thereby performing operation where suction pressure of the compressor is reduced.

An amount Y of liquid hydrogen that has passed through a first valve and has been volatilized during a predetermined time after first and second valves are opened is calculated by using a pressure P0 in an internal space of a liquid hydrogen tank measured before the two valves are opened, a pressure P1 in the internal space measured after the lapse of the predetermined time since the two valves are opened, and an amount X of the gaseous hydrogen that has passed through the second valve during the predetermined time. A fluid level H of the liquid hydrogen in the liquid hydrogen tank after the lapse of the predetermined time since the two valves are opened is calculated by using a expression showing a relationship between the H and an amount Y1 of the liquid hydrogen that passes through the first valve and drops therefrom, and the Y.

An apparatus for hydrogen dispensing can be configured to generate a display to be output visually to a customer that may use a dispenser to fill a fuel tank with hydrogen fuel. The display can include a graphical user interface or other interface that can show the customer information about the dispensing of fuel that is being provided to the user. This displayed information can include information to indicate an estimated time remaining to fully fill a vehicle's fuel tank so the customer can have visual and/or audible indications for how much longer the customer may have to wait to have the vehicle's fuel tank filled for continued use of the dispenser. This can improve the customer's experience at the fueling station. For instance, embodiments can allow the customer to more effectively use the fueling station and manage his or her time at the fueling station.

A cryogenic delivery tank includes a vessel having inner and outer shells and an interior that may contain a cryogenic liquid with a headspace above. A transfer pipe passes through the interior of the vessel and includes a head space coil positioned within an upper portion of the interior and a liquid side coil positioned in the lower portion of the interior. The transfer pipe has a first port adjacent to the head space coil and a second port adjacent to the liquid side coil. The first and second ports of the transfer pipe are configured to be removably attached to a second tank.

A method for increasing the available net positive suction head (NPSHa) for a cryogenic pump is provided. In one embodiment, the method can include the steps of: increasing a pressure within a liquid storage tank to at least a pumping set point, wherein the pumping set point is configured to cause the NPSHa to exceed the NPSHr; starting the cryogenic pump, thereby sending liquid from within the liquid storage tank through the pump and to an end user; stopping the cryogenic pump, thereby stopping flow of the liquid from the liquid storage tank; and resetting the pressure within the liquid storage tank to at least a storage set point.

A movement plan producing system that produces a movement plan for a hydrogen filling vehicle includes: a residual hydrogen amount information acquisition portion that communicates with a plurality of vehicles using hydrogen gas as fuel to acquire residual hydrogen amount information indicating a residual hydrogen amount in a hydrogen tank of each of the vehicles; a positional information acquisition portion that acquires positional information indicating the position of each of the plurality of vehicles; and a plan producing portion that produces the movement plan for making the hydrogen filling vehicle fill at least some of the plurality of vehicles with hydrogen using the acquired residual hydrogen amount information and the acquired positional information.

The present invention relates to a fuel tank arrangement of a marine vessel including a fuel tank for Liquefied Natural Gas, the fuel tank having a shell, a heat insulation in connection therewith, connections for a pipeline for bunkering LNG to the fuel tank, a pipeline for taking boil-off gas from the fuel tank and a pipeline for taking LNG from the fuel tank, and a deep well pump for pumping LNG from the tank to the pipeline, wherein at least one recess is extending inwardly from the shell and being arranged on top of the fuel tank, the deep well pump being installed in the at least one recess.

The invention can include a device for distributing a fluid in an industrial facility that comprises at least a fluid distribution pipe, a discharge pipe originating from the distribution pipe, a distribution valve that is positioned on the distribution pipe and controlling the distribution of fluid between the upstream area and a downstream dient, a discharge valve positioned on the discharge pipe, and measuring means for measuring, in real time, a characteristic parameter of the distribution of the fluid within one of the pipes. The distribution device can include a module for calculating a sliding threshold value of the characteristic parameter and means configured to control the partial gradual opening or closing of the discharge valve depending on the result of the comparison of said sliding threshold value with an instantaneous value of the characteristic parameter measured by the measuring means, in order to prevent the unwanted opening of the discharge valve and, therefore, the risk of fluid loss and the potential additional cost of the method implemented by the industrial facility. The invention also extends to a method for controlling the distribution of the fluid implemented by the distribution device according to the invention

A system for evaluating filling performance of hydrogen storages having various capacities uses a plurality of nozzles, a plurality of receptacles, and a plurality of hydrogen storages, and includes discharging hydrogen filled in one hydrogen storage while filling another hydrogen storage with hydrogen. Evaluation of filling performance may be performed in a back-to-back manner such that hydrogen is introduced into one of the plurality of hydrogen storages and discharged from another of the hydrogen storages. The plurality of hydrogen storages have various capacities, and introduction of hydrogen into the plurality of hydrogen storages is controlled according to a combination of hydrogen storages that corresponds to an evaluation target capacity, such that filling performance evaluation for various capacities is possible.

A method for calculating the autonomy of a gas distribution system assembly including a container containing gas and equipped with at least one gas filling indicator device and a gas flow rate indicator device at the output of the container. The method includes recovering at least one item of identification information on the container and/or the gas used. The method also includes acquiring at least one image to recover a first datum on a value indicated by the gas filling indicator device and a second datum on a value indicated by the flow rate indicator device. The method also includes communicating the at least one acquired image and the at least one recovered tern of identification to a computation module configured to deduce therefrom a corresponding value of autonomy of the gas distribution assembly, the computation module including at least the ability to process images.