A method monitors a pressure tank system of a stationary vehicle. The method detects a wake-up situation by use of sensor data of a main sensor of the vehicle. Furthermore, in reaction to the detection of a wake-up situation, the method activates a further resource for detecting and/or for evaluating sensor data with regard to the pressure tank system. Moreover, the method determines, by use of the further resource, whether one or more protective measures are to be carried out in relation to the pressure tank system and/or the surroundings thereof.

A method of distributing an electrically insulating liquefied gas mixture to high-voltage electrical equipment from a storage means containing an insulating gas mixture, including: heating the insulating gas mixture to a temperature such that the contents of the storage means are a homogeneous fluid; and withdrawing the insulating mixture resulting from step a) to fill high-voltage electrical equipment by raising the temperature of the mixture resulting from step a), wherein, during step b), a set value for regulation is applied at variable pressure, calculated in real time based on weighing the storage means, when the change in the set value of pressure is less than 0.2 bar per 1 kg/m.sup.3 of change in density, and then a set value for regulation is applied at constant temperature until the storage means is emptied of its content.

A compressed fluid energy storage system includes a submersible fluid containment subsystem charged with a compressed working fluid and submerged and ballasted in a body of water, with the fluid containment subsystem having a substantially flat portion closing a domed portion. The system also includes a compressor and an expander disposed to compress and expand the working fluid. The fluid containment subsystem is at least in part flexible, and includes an upper portion for storing compressed energy fluid and a lower portion for ballast material. The lower portion may be tapered proximate the flat portion to prevent it from being collapsed by ballast materials. The region between the fluid and the ballast has exchange ports to communicate water between the inside and outside of the containment subsystem. In other embodiments, an open-bottomed fluid containment system is held in position underneath a ballast system by a tensegrity structure.

Provided is an energy storage structure, comprising a housing and a piston. An accommodating cavity and a piston cylinder part communicating with each other are arranged within the housing. The piston is slidably and sealingly arranged within the piston cylinder part for transferring impact energy. A self-pressure of an energy storage medium, arranged within the accommodating cavity and the piston cylinder part, acts on the piston, tending to push the piston to move. An energy storage structure provided by the present invention has a simple structure, is convenient for use, and can ensure that a thrust or impact force remains unchanged or slightly changes during operation, to achieve stable release of potential energy. Moreover, the adjustment of the thrust or impact force can be achieved by changing the temperature of the energy storage medium in the accommodating cavity, thereby achieving change in total impact energy of the energy storage structure.

A system and method is disclosed for storing a fluid in a storage vessel in liquefied form and delivering it in gaseous form to an end user through a supply line. The system comprises a pressure relief circuit for returning the fluid from the supply line to the vessel when predetermined conditions are met. The pressure relief circuit comprises a return line connected to the supply line and the storage vessel, a diversion line to divert the fluid elsewhere and a switching device operable to direct the fluid to either one of the lines, as a function of predetermined conditions.

A fluid system for a vehicle is provided. The fluid system is configured to couple to a chassis of the vehicle. A frame assembly of the fluid system is configured to couple with the chassis directly or with another component that is coupled, directly or indirectly, with the chassis. A cowling of the fluid system can enclose a fuel pressure vessel and an auxiliary fluid vessel. The auxiliary fluid vessel is configured to be placed in fluid communication with the component powered or operated by the fluid therein.

The invention relates to a system including a cryogenic container, in particular an LNG container or a hydrogen container, an external heat exchanger and an internal heat exchanger with a pressure management system. The system also includes at least one of the following selectively connectable bypass lines for the temporary reduction of pressure losses: a first bypass line for the first heat exchanger tube of the external heat exchanger; a second bypass line for the second heat exchanger tube; a third bypass line for the internal heat exchanger.

In one aspect, an insert including a single metal or alloy compatible with cryo-compressed tanks is disclosed. In one embodiment, the insert contains one, two, or more tubes that extend into the inner storage volume of the tank. The insert may be integrally formed with the tubes. The tubes enable the entrance and exit of hydrogen to the inner storage volume. In one embodiment, the tank includes a boss suitable to accept the insert. The boss and the insert may be the same metal. The insert may minimize the number of welds suitable for use in on-board heavy duty storage applications. Overall, this type of insert decreases the probability of hydrogen leaks, reduces the cost of the insert as only one piece is required, and leads to faster manufacturing as fewer welds are required.

Aircraft fuel system including a fuel vessel containing a non-mixture fuel. A protective vessel is arranged about the fuel vessel such that the fuel vessel is contained within the protective vessel and a protective space is defined between an outer surface of a vessel wall of the fuel vessel and an inner surface of a vessel wall of the protective vessel. At least one mounting structure fixedly positions the fuel vessel within the protective vessel. A fuel consumption device configured to consume the non-mixture fuel. A fuel output fluidly connects an interior of the fuel vessel to the fuel consumption device, the fuel output being fluidly isolated from the protective space. A relief output fluidly connects the protective space to a relief flow path, the relief output and relief flow path configured to vent gas from the protective space and remove any non-mixture fuel from the protective space.

A pressure vessel for storing fuel is provided. The pressure vessel includes a liner for storing fuel, a fiber-reinforced layer which surrounds the liner at least in regions, and at least one load ring. Connecting pins project from the surface of the load ring, and the connecting pins protrude out of the fiber-reinforced layer. A motor vehicle including such a pressure vessel and a production method for the pressure vessel are also provided.