Disclosed are gas cylinder assemblies for containing pressurized gas. The gas cylinder assembly has a polymeric liner and a low-permeability barrier layer. The polymeric liner a first end portion, a second end portion and a central body. The central body comprises an outer surface and an inner surface disposed between the first end and the second end. The gas cylinder assembly comprises a reinforcement structure wound over the central body. The gas cylinder assembly further comprises a metal foil interposed between the reinforcement structure and central body. The metal foil is configured to reduce permeation of contents of the polymeric liner.

A pressure vessel includes: a barrel part disposed in a predefined square area and having a diameter corresponding to a length of one side of the square area; a first nozzle member disposed at one end of the barrel part; a second nozzle member disposed at an opposite end of the barrel part; and clamp rings disposed in the square area, positioned outside the barrel part, and configured to lock the first and second nozzle members to the barrel part, thereby improving spatial utilization and a degree of design freedom.

Control system and method for controlling state of hydrogen charge in hydrogen storage system in a vehicle to prevent hydrogen boil-off losses. The control system obtains information about predetermined stop duration and location for vehicle; obtains information on required hydrogen usage for reaching predetermined stop location from a current location of the vehicle; obtains information on a maximum hydrogen level of the hydrogen storage system to prevent hydrogen boil-off losses when the vehicle reaches the predetermined stop location and the stop duration starts; and generates a control signal for controlling the state of hydrogen charge of the hydrogen storage system based on a current hydrogen level in the hydrogen storage system when the vehicle is at the current location, the required hydrogen usage for reaching the predetermined stop location and the maximum hydrogen level of the hydrogen storage system to prevent hydrogen boil-off losses.

The disclosure relates to a tank for storing volatile gas under pressure and a structure comprising the tank. The tank has a wall formed of a filament wound carbon fibre reinforced polymer (CFRP). The CFRP may have a graphene nanomaterial filler dispersed in the polymer adhesive matrix. The structure includes a frame for bearing static and dynamic forces from internal and external loads, the frame including the tank, the tank being an active load bearing structural element configured as a stressed member in the frame such that, in the structure in use, the tank bears static and dynamic forces from internal and external loads. One or more of: the filament winding pattern of the carbon fibre, the wall thickness, the wall shape, or the material properties of the polymer matrix including the dispersed graphene; is configured such that the tank has mechanical properties required by the design of the structure.

A Reduced Boil-off Thermal Conditioning System (RBTC System) for transferring liquid natural gas (LNG) from a LNG supply tank to a LNG storage tank with reduced boil-off is disclosed. The RBTC System includes the LNG storage tank, a cryogenic fluid tank within the LNG supply tank, and a compressor. The LNG storage tank includes a first and second LNG pipe. The cryogenic fluid tank is configured to store a cryogenic fluid within the cryogenic fluid tank and the first and second LNG pipe are in fluid communication with to the cryogenic fluid tank. The first LNG pipe is in fluid communication with compressor.

The fuel gas system (100) for a vehicle (1) comprises: a filling device (50) having an outlet pipe (56); a first circuit (11) for providing fuel gas to an engine (8) of the vehicle, and including: a first tank (12); a first supply line (13) connecting the first tank (12) and the engine (8); a first filling pipe (14) connecting the filling device outlet pipe to the first tank (12); a second circuit (21) for providing fuel gas to a thermic device (9) capable of heating, cooling or refrigerating, the second circuit (21) including: a second tank (22); a second supply line (23) connecting the second tank (22) to the thermic device (9); a second filling pipe (24) connecting the filling device outlet pipe (56) to the second tank (22). The first circuit (11) and the second circuit (21) are configured to be in fluid communication: in a filling phase, when fuel gas flows in the first and second filling pipes (14, 24) from the filling device (50) towards the first and second tanks (12, 22); and in a working phase, when fuel gas flows in the first and second supply lines (13, 23) from the first and second tanks (12, 22).

The present invention relates to a method, system, vehicle, and computer program product for determining time data relating to a non-combustion outlet process of a fuel gas from a gas tank associated with a vehicle. The method comprises providing a model for the state of fuel gas in the gas tank. The method further comprises determining time data relating to the outlet process of the fuel gas based on the model.

In processes and systems utilizing a compressor to fill a vessel with gas, for example, in the filling of the fuel tank of a vehicle that operates on compressed natural gas (CNG), a number of advantages are realized by establishing independent control over the flow rate of gas discharged from the compressor, such as on the basis of the compressor discharge pressure, utilizing feedback from one or more gas pressure sensors. In representative embodiments, a detected or actual measured compressor discharge pressure can serve as a process variable, in a feedback control loop for regulating the output of the compressor.

A pressure vessel includes: a barrel part disposed in a predefined square area and having a diameter corresponding to a length of one side of the square area; a first nozzle member disposed at one end of the barrel part; a second nozzle member disposed at an opposite end of the barrel part; and clamp rings disposed in the square area, positioned outside the barrel part, and configured to lock the first and second nozzle members to the barrel part, thereby improving spatial utilization and a degree of design freedom.

A filling station for supplying vehicles with gas containing hydrogen comprises: a storage unit comprising high pressure gas containers; a compression unit comprising compressors for increasing the pressure of gas for the storage unit; and a supply unit comprising a supply device for supplying a vehicle; a storage circuit for circulating gas from the compression unit to the storage unit; and a filling circuit for circulating gas from the storage unit to the compression unit. The storage circuit comprises a storage pipe network connecting each compressor to each container and at least one storage distributor for selectively associating the compressors and the containers. The filling circuit includes a filling pipe network connecting each container with each compressor and a filling distributor for selectively associating the containers and the compressors. The station further includes control means for controlling the storage and filling distributors.