A cryogenic fuel system for an aircraft, the cryogenic fuel system includes a fuel tank assembly that is configured to store a cryogenic fuel in a liquid phase during aircraft operation, and a cooling system that is associated with the fuel tank assembly. The cooling system is configured to maintain the fuel tank assembly within a predefined temperature range during non-flight operation.

Systems and methods for controlling the temperature and pressure of a cryogenic liquid methane storage unit are provided. The disclosed systems and methods generate methane gas from a reservoir of liquid methane stored within the methane storage unit, vent the methane gas through one or more outlet valves connected to the methane storage unit, and generate electric power using the vented methane gas. The generated electric power can then be used to initiating a cooling cycle, which reduces the temperature of said reservoir of liquid methane and reduces the pressure in said methane storage unit. Micro anaerobic digesters and methane storage units may be configured in a networked environment with a central controller that monitors remote units.

Systems and methods for controlling the temperature and pressure of a cryogenic liquid methane storage unit are provided. The disclosed systems and methods generate methane gas from a reservoir of liquid methane stored within the methane storage unit, vent the methane gas through one or more outlet valves connected to the methane storage unit, and generate electric power using the vented methane gas. The generated electric power can then be used to initiating a cooling cycle, which reduces the temperature of said reservoir of liquid methane and reduces the pressure in said methane storage unit. Micro anaerobic digesters and methane storage units may be configured in a networked environment with a central controller that monitors remote units.

A liquefied light hydrocarbon (LLH) fuel system for a hybrid vehicle is disclosed. The fuel system comprises an insulated fuel tank having a buffer space, a fuel control valve, wherein an outlet to the fuel tank connects to a first end of the fuel line, wherein an inlet of the fuel control valve connects to a second end of the fuel line and wherein an outlet of the fuel control valve is adapted to connect to a fuel inlet to an internal combustion engine; and a tank heating system comprising: a heating element, wherein the heating element is disposed adjacent to or within the fuel tank; a heating power control system, wherein the heating power control system controls the amount of heat produced by the heating element to vaporize the LLH fuel. Methods of using the fuel system are also disclosed.

Systems and methods for controlling the temperature and pressure of a cryogenic liquid methane storage unit are provided. The disclosed systems and methods generate methane gas from a reservoir of liquid methane stored within the methane storage unit, vent the methane gas through one or more outlet valves connected to the methane storage unit, and generate electric power using the vented methane gas. The generated electric power can then be used to initiating a cooling cycle, which reduces the temperature of said reservoir of liquid methane and reduces the pressure in said methane storage unit. Micro anaerobic digesters and methane storage units may be configured in a networked environment with a central controller that monitors remote units.

A system for filling an LPG vehicle with LPG using an auxiliary bombe is provided. The system may be configured for easily filling a main bombe with LPG even in the hot season (summertime) or the like during which the outside temperature rapidly rises, by using an auxiliary bombe in addition to using the main bombe. The system may also be capable of always smoothly refilling the main bombe with LPG by moving a portion of the LPG in the main bombe to the auxiliary bombe, when the pressure in the main bombe is higher than the LPG filling pressure of a filling gun in the hot season during which the outside temperature rapidly rises, so that the pressure in the main bombe becomes lower than the filling pressure.

Systems and methods for controlling the temperature and pressure of a cryogenic liquid methane storage unit are provided. The disclosed systems and methods generate methane gas from a reservoir of liquid methane stored within the methane storage unit, vent the methane gas through one or more outlet valves connected to the methane storage unit, and generate electric power using the vented methane gas. The generated electric power can then be used to initiating a cooling cycle, which reduces the temperature of said reservoir of liquid methane and reduces the pressure in said methane storage unit. Micro anaerobic digesters and methane storage units may be configured in a networked environment with a central controller that monitors remote units.

A cuboid pressure vessel comprises a top wall, a bottom wall, and an external wall. The external wall comprises a main body including a first side wall having a first opening, and a second side wall having a second opening; a first lid secured to the first side wall so as to occlude the first opening; and a second lid secured to the second side wall so as to occlude the second opening. The bottom wall comprises a main body; and a reinforcement rib provided in an upright manner on the outer surface of the main body. The reinforcement rib is provided in an upright manner on the outer surface of an area, within the main body, which contains a central section of the main body, and which excludes four corner sections, a region adjacent to the first lid and a region adjacent to the second lid.

A pressure vessel, in particular a cryogenic pressure vessel, has an inner vessel, an outer vessel and a chamber that can be evacuated at least partly. A motor vehicle includes such a pressure vessel.

The invention relates to a tank for storing cryogenic fluid, for example hydrogen or liquefied helium, having a storage shell with a cylindrical overall shape extending in a longitudinal direction that is horizontal when the tank is in the use configuration, the storage shell having, within it, a homogenization device for homogenizing the temperature of the fluid vertically in the tank, the homogenization device having at least one heat-transfer wall having a material with a coefficient of thermal conductivity of greater than 30 W.Math.m.sup.1.Math.K.sup.1, the transfer wall being arranged parallel to the longitudinal direction of the tank and extending vertically over 20 to 100% of the height of the storage shell and extending longitudinally over at least 50% of the length of the storage shell.