To provide a method for safely and stably storing a hydrochlorofluoroolefin filled in a container for storage, transportation, etc. A method for storing a hydrochlorofluoroolefin in a sealed storage container, wherein the hydrochlorofluoroolefin is stored in such a state that a gas phase and a liquid phase coexist in the storage container, and the concentration of air in the gas phase in the storage container at a temperature of 25 C. is kept to be at most 3.0 vol %, and a method for storing a hydrochlorofluoroolefin in a sealed storage container, wherein the hydrochlorofluoroolefin is stored in such a state that a gas phase and a liquid phase coexist in the storage container, and the concentration of oxygen in the gas phase in the storage container at a temperature of 25 C. is kept to be at most 0.6 vol %.

Device for filling tanks with pressurized gas, in particular hydrogen gas tanks of motor vehicles, the device comprising at least one gas source, a transfer circuit comprising at least one upstream end connected to the source and at least one downstream end intended to be connected in removable fashion to a tank to be filled, the transfer circuit additionally comprising, between its upstream and downstream ends, a set of buffer storage container(s) which is (are) connected in parallel to the transfer circuit via a set of respective connecting valve(s), the transfer circuit comprising a portion of pipe(s) forming a loop, a plurality of the buffer storage container(s) being connected in parallel to the said loop, characterized in that the transfer circuit comprises a plurality of separate downstream ends each intended to be connected in removable fashion to a respective tank to be filled, the said downstream ends being connected in parallel to the said loop and comprising a set of respective linking valves, so that control of the connecting valves and of the linking valves makes it possible to bring at least one first buffer storage container into fluidic communication, via the loop, with a first downstream end and, simultaneously, to bring at least one second buffer storage container into fluidic communication, via the loop, with a second downstream end and/or to bring two separate buffer storage containers into fluidic communication.

A tank for containing pressurized hydrogen for a fuel cell vehicle, comprising at least one fuel tank comprising a wall configured to delimit an internal volume for containing said pressurized hydrogen, said tank comprising safety means configured to chemically neutralize said pressurized hydrogen according to a pre-established condition.

A liquid storage container comprises: a first lid; a container body having an opening on one end, an interior of the container body and the lid forming a chamber. The opening end of the first lid and the opening end of the container body are rotatably and sealingly connected; and a first pipe and a second pipe communicating the chamber with the outside. The first pipe is provided on the first lid. The second pipe is provided on the container body.

A compressed natural gas fueling system includes a frame arrangement with at least one tank disposed therein and an inlet that can receive a compressed natural gas fueling nozzle to fill the at least one tank. The fueling system can be attached with and supported by frame rails behind a cabin of a vehicle such that the inlet is positioned above the frame rails.

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.

A high-pressure hydrogen container includes: a cylinder body; and a lid member that closes an end portion of the cylinder body. The cylinder body includes: a joining portion that fixes the lid member; a cylinder portion that forms an outer shell of a storage portion; and a sealing surface formed at an inner surface of the cylinder body. At least H<K is satisfied, where an area of the sealing surface which the sealing portion abuts is an abutting area, H is a thickness from the abutting area to an outer surface of the cylinder body, part of the cylinder body in which a stress greater than or equal to a predetermined stress is generated is a stress generation portion, and L is a distance between the abutting area and the stress generation portion.

A gas pressure vessel capable of performing processing of removing wrinkles on an inner surface of a dome part and preventing cracking starting from a root of a thread of a neck part is provided. In a gas pressure vessel according to one embodiment, a dome part (12) has an opening whose diameter is 90 mm or greater, and the innermost root of the thread in a female thread part (10a) into which a lid (20) is screwed is provided inside an imaginary plane (B) formed by extending an outer surface of the dome part (12) toward an opening.

This invention relates to a novel method and system for dispensing CO2 vapor without over pressurization from a system having multiple containers. The system includes one or more liquid containers and one or more vapor containers. The system is designed to operate in a specific manner whereby a restricted amount of CO2 liquid is permitted into the vapor container through a restrictive pathway that is created and maintained by a shuttle valve during the filling operation so that equalization of container pressures is achieved, thereby allowing shuttle valve to reseat when filling has stopped. During use, a pressure differential device is designed to specifically isolate the vapor container from the liquid container so as to preferentially deplete liquid CO2 from the vapor container and avoid over pressurization of the system until the vapor container becomes liquid dry. The system can be operated so that at least 50% of the CO2 vapor product is dispensed from the vapor container.

A high-pressure vessel unit includes: plural cylindrical vessels arrayed inside a case, with end portions of the vessels on one side in the axial direction thereof being equipped with openings; a coupling member connected to the openings of the vessels to couple the plural vessels and includes a flow passage that communicates the insides of the vessels; a lead-out pipe that is leads out to the outside of the case from the coupling member through a through hole formed in the case; securing members that secure the coupling member to the case; and a retention mechanism that retains portions of the vessels on the axial direction other side of the end portions on the one side in the axial direction such that those portions of the vessels on the axial direction other side are movable in the axial direction relative to the case.