A fully contained, mobile, compressed natural gas (CNG), compressed breathing air, or other compressed gas refueling unit, and methods of use of said refueling unit, that use a pneumatically powered booster pump to provide a consistent, high pressure filling of CNG storage tanks without using an external power source.

Scalable greenhouse gas capture systems and methods to allow a user to off-load exhaust captured in an on-board vehicle exhaust capture device and to allow for a delivery vehicle or other transportation mechanism to obtain and transport the exhaust. The systems and methods may involve one or more exhaust pumps, each with an exhaust nozzle corresponding to a vehicle exhaust port. Upon engagement with the vehicle exhaust port, the exhaust nozzle may create an air-tight seal between the exhaust nozzle and the vehicle exhaust port. A first pipe may be configured to transport captured exhaust therethrough from the exhaust nozzle to. The captured exhaust may be at least temporarily stored in an exhaust holding tank connected to and in fluid communication with the first pipe.

A method of preventing cross-contamination comprising providing a first tank having standard thread fittings, providing a second tank having reverse thread fittings, storing LPG in the second tank, and storing anhydrous ammonia in the first tank.

A liquefied hydrogen loading arm configured to transport liquefied hydrogen includes: a support frame structure including a base riser erected on a ground, an inboard boom, an outboard boom, and a counterweight; a flexible vacuum insulation double tube including a flexible metal inner tube, a flexible metal outer tube fitted on the inner tube, and a vacuum layer, the vacuum insulation double tube being disposed in an upward curved shape in a space below the support frame structure; a vacuum insulation double connecting tube connected to a distal end portion of the vacuum insulation double tube and connected to a distal end portion of the outboard boom; and a midway portion support mechanism configured to support a lengthwise midway portion of the vacuum insulation double tube on the support frame structure through a hard curved member curved upward in a convex shape.

Provided herein is a system and method for refilling refillable pressurized fluid tanks. The system includes a source tank, having a source fluid, a target refillable tank, a valve assembly, and a fill hose. The valve assembly is affixed to the refillable fluid tank and is fluidly attached to the source fluid tank with the fill hose. The fluid from the source fluid tank is transferred to the target refillable fluid tank via the fill hose and the valve assembly. When the target refillable fluid tank is filled to capacity, excess propane is dispensed from the valve assembly through an overfill valve

This invention discloses an inflator mechanism for rafts and life vests that performs a multitude of functions required for rescue and underwater deployment of personnel and devices. The inner cylinder in this disclosure is actuated by a plethora of inputs, manual, automatic selectable pressure sensing, or dualled hydrostatic sensors which can each be safely selected by function selection. Since the inflator uses spring discs to drive a penetrator which mechanically punctures a membrane of an inflation gas source and actuated by an electronically controlled solenoid, dissolvable elements, conductivity switches and preset check valve actuators are eliminated increasing the safety and reliability of the actuator. Electronic control further permits user enabling of inflation depth actuation and the multiple water sensors prevent failure of actuation due to splashes and humidity effects on sensors. The actuator mechanism is self cocking, indicates proper installation of gas source enables use of several gas source cylinders and is multiply reusable.

A doser for dispensing a cryogenic fluid includes a doser body configured to receive the cryogenic fluid. The dosing arm has a proximal end and a distal end and a central passage extending between the proximal and distal ends. Furthermore, the dosing arm is configured to receive cryogenic fluid from the doser body. A bayonet connection removably connects the proximal end of the dosing arm to the doser body. A dosing head is mounted to the distal end of the dosing arm and is configured to receive cryogenic fluid from the central passage of the dosing arm and to dispense the cryogenic fluid.

A methane transportation system is provided. The system may include a methane source configured to dispense methane at a first location, and an underwater vehicle. The underwater vehicle may include a propulsion system configured to transport the underwater vehicle underwater from the first location to a second location and a vessel defining a storage chamber configured to receive water and the methane from the methane source. The storage chamber of the vessel may have a pressure exceeding one atmosphere and a temperature during transport from the first location to the second location sufficient to form methane clathrate in the storage chamber. The system may further include a methane receiver configured to receive the methane released from the storage chamber at the second location. Related methods are also provided.

Tank device (1) for storing a gaseous medium, in particular hydrogen, comprising at least one tank container (2) and a feed line (4) which can be connected to the at least one tank container (2), said at least one tank container (2) being fluidically connected to the feed line (4) by means of at least one valve (8, 10). The at least one tank container (2) is fluidically connected to a connection line (11) via at least one valve (8, 10), wherein a frame-shaped housing element (24) is arranged in the tank device (1), said housing element (24) surrounding the at least one tank container (2) and the feed line (4). The housing element (24) can additionally be thermally activated.

A gas storage system is provided comprising a surface facility for gas production, and a storage vessel for storing pressurised gas from the surface facility, the gas being transferred from the storage vessel to the surface facility and/or a carrier vessel without substantial change in pressure, wherein the transfer is substantially driven by liquid displacement or elastomeric force.