The present invention is to provide a hydrogen refueling system capable to cool down the H2 pre-cooling heat exchanger fast enough when a FCV enters the HRS, so that there is no or very minimal waiting time for the customer before starting refueling. A hydrogen refueling system including a cryogenic fluid tank that stores a cryogenic fluid, a dispenser that supplies H2 to a vehicle, including a heat exchanger that cools H2 with the cold and/or cryogenic fluid provided from the cryogenic fluid tank, an inlet line that sends the cold and/or cryogenic fluid to the heat exchanger from the cryogenic fluid tank, an outlet line that collects the cryogenic fluid fed from the heat exchanger, and an injection valve that is provided in the inlet line.

A method for refueling of gas into a pressurized gas tank with repeated adjustment of a target pressure (Ptarget) for the refueling is disclosed, said method comprising the steps of: recording starting conditions for the refueling, establishing a mathematical relation between the recorded starting conditions, the actual refueling time (t_refueling) passed and the target pressure for the refueling, starting the refueling, and repeatedly calculating the target pressure corresponding to the actual refueling time passed and measuring the nozzle pressure of the refueling station, until the calculated target pressure has been reached.

Disclosed is a liquefied natural gas storage apparatus. The apparatus includes a heat insulated tank and liquefied natural gas contained in the tank. The tank has heat insulation sufficient to maintain liquefied natural gas therein such that most of the liquefied natural gas stays in liquid. The contained liquefied natural gas has a vapor pressure from about 0.3 bar to about 2 bar. The apparatus further includes a safety valve configured to release a part of liquefied natural gas contained in the tank when a vapor pressure of liquefied natural gas within the tank becomes higher than a cut-off pressure. The cut-off pressure is from about 0.3 bar to about 2 bar.

The present invention is to properly manage life of an accumulator and extend the life of the accumulator. A gas supply system includes a control section, an acquiring section, a classifying section, and a judging section. The acquiring section acquires stress amplitude of accumulators from a pressure difference between first pressure on the gas storage side and second pressure on the gas lead-out side. The classifying section classifies the stress amplitude into a plurality of groups. The judging section divides the calculated acquirement number n.sub.i of the stress amplitude for each of the groups by the predetermined breaking cycle number N.sub.i, and determines a fatigue degree n.sub.i/N.sub.i. In a case where this value becomes a predetermined threshold value or more, the judging section judges that the accumulator comes to the end of the life.

Disclosed is a liquefied natural gas storage apparatus. The apparatus includes a heat insulated tank and liquefied natural gas contained in the tank. The tank has heat insulation sufficient to maintain liquefied natural gas therein such that most of the liquefied natural gas stays in liquid. The contained liquefied natural gas has a vapor pressure from about 0.3 bar to about 2 bar. The apparatus further includes a safety valve configured to release a part of liquefied natural gas contained in the tank when a vapor pressure of liquefied natural gas within the tank becomes higher than a cut-off pressure. The cut-off pressure is from about 0.3 bar to about 2 bar.

Systems and methods are provided for in situ observation of reservoirs, such as syringes, during the freeze thaw cycle to allow for more in depth understanding of the behavior of the system. The systems and methods may include an inert environment and/or a low concentration (e.g., on the order of parts per million (ppm)) of water, which may inhibit frost formation.

In a gas filling method for filling a tank with gas by supplying the gas from an accumulator to the tank through a flow rate adjusting valve and a pipe, a target pressure rise rate, which is a temporal change of a target tank pressure, is set when the tank is filled with the gas. During filling of the tank with the gas, the flow rate adjusting valve is adjusted so that a dispenser pressure, which is a gas pressure in the accumulator, becomes a pressure that is higher than the target tank pressure and enables the target pressure rise rate to be maintained.

Mobile cryogenic tank for transporting cryogenic fluid, notably liquefied hydrogen or helium, comprising an internal shell intended to contain the cryogenic fluid, an external shell arranged around the internal shell and delimiting a space between the two shells, said space containing a thermal insulator, the first shell having a cylindrical overall shape extending along a central longitudinal axis (A), when the tank is in the configuration for transport and use, the central longitudinal axis (A) being oriented horizontally, the tank comprising a set of temperature sensors measuring the temperature of the fluid in the internal shell, characterized in that the set of temperature sensors is situated on the external face of the internal shell and measure the temperature of said shell, the set of temperature sensors comprising a lower sensor positioned at the lower end of the internal shell situated below the central longitudinal axis (A), the set of temperature sensors further comprising a plurality of intermediate sensors distributed over two lateral faces of the internal shell on each side of the central longitudinal axis (A), the plurality of intermediate sensors being distributed vertically between the lower end of the internal shell situated below the central longitudinal axis (A) and the upper end of the internal shell situated above the central longitudinal axis (A).

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 method and apparatus for compressing gases and supplying fuel to a gaseous fuel consuming device, such as a gaseous fueled vehicle or the like. One embodiment includes a gas compressor for compressing the gaseous fuel to an array of tanks having predetermined initial set points which are increasing for tanks in the array. One embodiment provides a selecting valve having first and second families of ports wherein the valve can be operated to select a plurality of ports from the first family to be fluidly connected with a plurality of ports with the second family, and such fluid connections can be changed by operation of the valve.