Methods, apparatus, and device, for a cryogenic storage system that stores and/or transports a liquid or gas at a temperature below ambient temperature. The cryogenic storage system has an enclosure and a cavity. The cryogenic storage system has a dewar that is positioned within the cavity of the enclosure. The dewar has a payload area that is configured to hold a liquid below ambient temperature. The dewar is configured to hold a liquid below ambient temperature and passively stabilize in an upright position. The dewar is formed with an inner wall and an outer wall and has an opening that allows access to the payload area.

A fuel cell system includes: a high-pressure tank including a resin liner and a reinforcing layer; an acquisition portion configured to acquire a value of an internal pressure and a value of an internal temperature of the high-pressure tank; a notification portion; and a controlling portion. The controlling portion sets, in a map of the internal temperature and the internal pressure, a boundary line sectioning the map into a first region and a second region, the first region indicating a possibility that a stress caused in the resin liner damages the resin liner, the second region being a region having a higher temperature and a higher pressure than the first region. When the value of the internal temperature and the value of the internal pressure reach the boundary line, the controlling portion causes the notification portion to notify that the high-pressure tank needs to be filled with a fuel gas.

A multi-walled storage tanks use pressure differences between walls/shells to maximize fluid mass storage for tank size by reducing or minimizing the distance between the outer most layers of a multi-layer storage device, and keeping the middle one(s), particularly the innermost space, as large as possible, while having shell walls of substantially the same material and thickness, with no wall being thicker than the inner shell wall.

The present disclosure relates to a variable pressure vessel. The vessel includes a liquid chamber and a gas chamber and a moveable barrier therebetween. The vessel has a volume, a first stroke, and a second stroke. The liquid chamber and the gas chamber each have a variable volume that changes responsive to the first stroke and the second stroke. The gas chamber has an outer wall wherein at least a portion of the outer wall is thermally conductive and allows heat to transfer therethrough. Movement of the moveable barrier between the liquid chamber and the gas chamber causes the volume in the liquid chamber and the volume in the gas chamber to displace each other. The volume in the gas chamber plus the volume in the liquid chamber is generally constant and generally equals the volume in the variable pressure vessel.

A pressure tank includes a metallic vessel, a plastic liner received in the metallic vessel, a flexible diaphragm, two connectors and a nozzle coupled to the nipples respectively. The metallic vessel includes upper and lower shells. The upper shell defines a first planar area on a side thereof and a second planar area on a top thereof. The lower shell defines a third planar area thereunder. The flexible diaphragm divides the metallic vessel into a storage space and a pneumatic room. Each of the connectors includes a nipple and an anti-leak assembly. The nipples of the connectors are mounted on the side and top of the upper shell respectively and are in communication with the storage space. The two anti-leak assemblies provide leakproof connection between the nipples and the plastic liner. Additionally, the nozzle is mounted on the third planar area to be in communication with the pneumatic room.

A dual-wall, vacuum-insulated container (30, 40) has an external wall (1), an internal wall (3) and there in-between a vacuum chamber (5), in which there is arranged a heat insulation device (2, 20). At least three temperature sensors (13, 13a, 13b, 14, 15) that are spaced apart from another recurringly register instantaneous temperatures (T.sub.1, T.sub.2, T.sub.2A, T.sub.2B, T.sub.3) of the container (30, 40). At least in some points there is calculated a temperature course using a heat insulation model on the basis of the construction and material characteristics of the container and the heat radiation resulting therefrom, which temperature course contains at least two of the temperatures (T.sub.1, T.sub.2, T.sub.2A, T.sub.2B, T.sub.3) registered. From the temperature course there is calculated a desired temperature value for the position of at least one further of the temperature sensors and compared with the actual temperature value actually registered by this temperature sensor. From the deviation between the desired temperature value and the actual temperature value there is detected a change of the heat insulation quality of the container.

A method, a composite joint, and a composite tank are presented. The composite tank comprises a curved wall, a plurality of shear fittings, and a plurality of bolts. The curved wall has an opening. The plurality of shear fittings is threaded into a plurality of blind holes in the curved wall around the opening. The plurality of bolts engages the plurality of shear fittings and joins a cap to the curved wall.

The present invention is related to a corner panel of an LNG cargo that includes a main body, which constitutes a corner area of the cargo, and a stress diverging part, which reduces the convergence of stress of the main body by being integrated with an internal face of the main body and being formed with curvature. Therefore, by forming the corner area of the LNG cargo in a single body having a round-shaped curvature, convergence of stress caused by the deformation of the hull and thermal deformation can be prevented, and possibility of crack in a secondary barrier can be removed. By allowing the secondary barrier to be formed in a curved shape, the constructability of the secondary barrier can be greatly improved. Since no hardwood key or plywood is required, the thickness of a primary barrier can be reduced as the stress is decreased and the reliability of the secondary barrier is improved, and the weight can be greatly reduced over the conventional cargo corner area.

Provided is a system and method for securing a seal between a thermoplastic liner and a metal boss for a composite cylinder. A metal boss can be integrated with a thermoplastic liner during a molding process. A bushing can be inserted into the metal boss and coupled thereto via threading. The bushing can further include a relief space region having a sidewall that is deformed from a first position to a second position in order to decrease a distance of the metal boss to the sidewall of the bushing, wherein the decrease provides a seal between the metal boss and the thermoplastic liner.

A pressure vessel including a boss, liner, and shell to create a vessel capable of storing high-pressure fluids with minimal weight. The boss includes a through aperture and at least one recess to receive at least one fastener. The liner includes an interior surface, an exterior surface, and an annular insert to receive the fastener(s). The interior surface defines an interior cavity of the pressure vessel. The liner is configured to secure the boss to its exterior surface using the fastener(s) and the annular insert. After securing the boss to the liner, the composite wrap is applied to the boss and liner so as to surround the liner and at least a portion of the boss.