The invention relates to a system for generating mechanical energy, comprising at least: a compressor; an expander; a heat exchanger; said system having a motor operative mode in which said system additionally comprises: means for the intake of pressurised liquid nitrogen in a liquid nitrogen intake inlet of said exchanger, means for the intake of air or gaseous nitrogen in an air or gaseous nitrogen intake inlet of said exchanger, means for discharging vaporised nitrogen at a vaporised nitrogen outlet of said exchanger, and means for discharging air or cooled nitrogen at another outlet of said exchanger for air or cooled gaseous nitrogen; means for the intake of said vaporised nitrogen into the interior of said expander in order to expand same; means for the intake of the air or cooled gaseous nitrogen into said compressor so as to produce compressed air or gaseous nitrogen therein.

Method, system, apparatus, and/or device for drying a dewar. The dewar drying apparatus includes a heating element. The heating element is configured to produce heat that warms a payload area within the dewar. The dewar drying apparatus includes a controller. The controller is coupled to the heating element and configured to determine or detect a temperature within the payload area of the dewar. The controller is configured to control, using the heating element, the temperature within the payload area of the dewar to evaporate a liquid or a gas within the payload area.

A cryogenic storage device includes a storage tank having an inner tank, an intermediate tank and an outer tank spaced apart from each other so as to define a fluid reservoir for holding a cryogenic liquid and a thermal insulative space bounding the fluid reservoir. A top cover closes the open top. An inlet supplies the cryogenic liquid to the fluid reservoir. A fluid sensor is configured to detect a pressure within the cryogenic storage device and is removably disposed within the fluid reservoir so as to allow an ice formation to be thawed without having to thaw the entire cryogenic storage device.

Method, system, apparatus, and/or device to secure the vapor plug within the dewar. The vapor plug retention strap includes a first connector, a second connector and a main body. The second connector is configured to couple with the first connector. The main body is coupled in between the first connector and the second connector. The main body has a receptacle formed within that is configured to receive a neck of a vapor plug of a dewar and retain the neck of the vapor plug to secure the vapor plug within the dewar.

A system and method for cooling a liquid cryogenic fluid user with an inert and non-pressurized liquid cryogen in 120K to 200K temperature range is provided. This includes maintaining the first liquid cryogenic fluid within a first predetermined temperature range with the sub-cooler and/or the recirculation pump, maintaining the second liquid cryogenic fluid within a second predetermined temperature range with the heat exchanger, and recondensing the second liquid cryogenic fluid using the pressurized first liquid cryogenic fluid.

A compressed pressure vessel suitable for serving as construction element for building energy storage constructions thereof is described. The compressed pressure vessel comprises a first, inner, segment, wherein the inner segment comprises an inlet for filling or emptying the inner segment and wherein the inner segment is suitable for storing hydrogen, and a second, outer, segment, the outer segment adapted for being filled with a fluid, different from hydrogen, wherein the outer segment is substantially fully encompassing the inner segment.

A method for molding a composite pressure vessel liner to secure a boss to the liner is described. The method comprises providing a moldable liner having an end section with a neck and a port. A boss is positioned around the neck of the liner and the liner is heated and pressure is applied to mold the liner to form to the shape of the boss. The angle of the molded liner secures the boss in place around the liner and it is able to withstand high pressures. A tool for molding the liner and a method for using the tool is also described. The tool comprises a tool body and a pipe having external threads. The tool body abuts the liner and the boss. Winding the pipe exerts pressure on the liner, which when heated, forces the liner to mold to the shape of the boss.

Provided is a high-pressure tank including: a helical layer containing first fibers that are wound in a helical pattern and a first resin that fixes the first fibers; a hoop layer located outward of the helical layer in the high-pressure tank and containing second fibers that are wound in a hoop pattern and a second resin that fixes the second fibers; and an intermediate layer located between the helical layer and the hoop layer and containing third fibers that are thinner than at least either the first fibers or the second fibers and a third resin that fixes the third fibers, the first fibers of the helical layer, and the second fibers of the hoop layer.

A vaporizer system includes a defrosting function along with the ability to convert liquefied gas to a use gas. The vaporizer system includes first and second vaporizers and piping that transfers fluid from an inlet port to an outlet port with a portion of the piping being between the first and second vaporizer. The system also includes a trim heater and a number of valves for regulating flow of the fluid through the transfer piping. The valves may be placed in a first configuration where vapor from the first vaporizer is heated and directed to the second vaporizer so that the second vaporizer is defrosted and a second configuration where vapor from the second vaporizer is heated and directed to the first vaporizer so that the first vaporizer is defrosted.

A System to convert and dispense pressurized gas(es) of cryogenic liquids of gas(es), and systems and methods using a sphere pressure vessel to efficiently convert liquid natural gas (LNG) to compressed natural gas (CNG) and low pressure natural gas (NG) and other cryogenic liquids of gas. The system requires one dedicated sphere pressure vessel at the dispensing location and the location of elements according to horizontal and vertical orientation to convert, retain, store, and dispense multiple pressures of gas from a cryogenic liquid supply such as a non-dedicated high pressure cryogenic personal supply tank. The system efficiently modifies and controls parameters of volume, pressure, and temperature in conversion scale to retain all converted product under human control to dispense, without process required waste, for use in commercial, utility and industrial uses, and scaleable for single family residential applications where service can be accomplished by pickup truck and trailer, where semi trucks access is not available.