A system supplies gas to a high-pressure gas-consuming apparatus and a low-pressure gas-consuming apparatus of a floating structure including a tank. The supply system includes: a first supply circuit, a second supply circuit, a return line, a first heat exchanger and a second heat exchanger. The return line includes a flow-regulating member. The supply system includes a device for managing the supply system which includes a control module to control the flow-regulating member based on the characteristics of the gas.

A cryogenic tank apparatus includes an inner container for holding a cryogenic medium, an outer housing surrounding the inner container, an insulation space disposed between the inner container and the outer housing, and at least one heat exchanger. The at least one heat exchanger includes at least one cold flow line through which flows the cryogenic medium held in the inner container, and at least one hot flow line in thermal contact with the at least one cold flow line and through which flows a temperature control medium in such a manner that a transfer of heat takes place between the temperature control medium and the cryogenic medium. The at least one cold flow line is arranged on an inner side of the outer housing and the at least one hot flow line is arranged on an outer side of the outer housing so that a portion of the outer housing acts as a heat transfer surface of the heat exchanger.

A portable vaporizer for heating a liquid-phase fuel. The vaporizer comprising a reservoir having a least one wall for containing a heat-conducting fluid within the reservoir. A heating tube extending into the reservoir such that the heating tube is in fluid contact with the heat-conducting fluid. The heating core has and inlet through which the liquid-phase fuel will flow and an outlet through which the vaporized liquid-phase fuel will flow. A heating core comprising an electric heating element placed within the reservoir to heat the heat-conducting fluid and vaporize the liquid-phase fuel passing through the heating tube.

A hydrogen supplying device includes a liquid hydrogen pump, an evaporator, a pressure chamber configured to be filled with hydrogen gas flowing therein from the evaporator and to supply the filled hydrogen gas to a hydrogen engine, and a pump control unit configured to adjust a discharge flow rate of the liquid hydrogen pump based on both a flow rate of hydrogen to be supplied to the hydrogen engine and an actual pressure in the pressure chamber.

A system for storing air at high pressure underground or underwater includes a plurality of arrays of air tanks, each tank configured to store compressed air at a pressure of at least 40 bar. A piping system connects between an outlet of each air tank, the piping system further including at least one central port for delivering compressed air to and from a respective array. A storage receptacle surrounds the arrays and piping system, protecting the arrays and piping system from an external environment, and thermally insulating the arrays and piping system. A liquid bath is arranged within the storage receptacle. A heat exchanger is configured to maintain a temperature of the liquid bath substantially constant. The storage receptacle may be comprised of plastic pieces welded together in a modular fashion. Each piece may be a cylindrical tube configured to receive therein one or more of the arrays.

The hydrogen compressing system has a first unit that receives hydrogen at low temperature and low pressure and compresses it, a second unit that cools down the hydrogen received from the first unit and a third unit that heats up and pressurizes the hydrogen received from the second unit; the high-pressure hydrogen is stored in a tank and afterwards may be supplied, for example, to a tank of a vehicle; pressurization at the third unit (300) is achieved by introducing cold hydrogen gas, well below ambient temperature, received from the second unit into the tank and heating it while the tank is closed preferably till when the hydrogen inside the tank reaches ambient temperature; heating-based compression allows to easily obtain high pressure through a relatively simple system and without risk of reducing the purity of the hydrogen.

A low-pressure fuel management and delivery system 10 for a liquefied natural gas (LNG) rail tender is disclosed. The system provides a rail tender that is inherently safer in operation to known LNG rail tenders through its use of a double-hulled tank design 12, which lacks any penetration of the bottom surface of the first inner tank 16 by any portion of the fuel supply portion of the system 10; the lower pressure storage of the fuel 22 in the first inner tank 16; the inclusion of a gas return line 58 for directing fuel 22 trapped in the LNG flow lines 38, the heat exchanger 46, or the multistage gas compressor 52 to the vapor space 32 of the first inner tank 16 at safe pressures and temperatures; the lack of cryogenic pumps within the first inner tank 16 to drive the fuel supply portion of the system 10; and the location of all the flow controlling valves 40, 42, 50, and 56 in positions that afford them improved physical protection from potential damage due to vehicular collisions or other railroad accidents. During operation, the fuel management and delivery system 10 provides required fuel flow rates and temperatures to an associated locomotive through the use of hydrostatic pressure differences between the LNG fuel 22 and the vapor space 32 within first inner tank 16, as well as a heat exchanger 46 and a multi-stage compressor 52, which are preferably located external of the double-hulled fuel storage tank 12, but on the same rolling stock chassis 14.

A device for compressing a fluid, such as dihydrogen, dioxygen, dinitrogen or argon, including: a cryogenic vessel capable of containing the fluid in liquid form at a cryogenic temperature, and fluid in the form of gas originating from a vaporization of the liquid in the cryogenic vessel; a pressure vessel surrounding the cryogenic vessel, configured to withstand an inner pressure; and a device for equalizing the pressure between the interior of the cryogenic vessel and the interior of the pressure vessel, the equalization device including a piping configured to transfer overpressurized gas into the cryogenic vessel in a space comprised between the pressure vessel and the cryogenic vessel, the piping including a device for reheating the overpressurized gas originating from the cryogenic vessel up to a predetermined temperature higher than the cryogenic temperature.

The present disclosure provides an integrated power generating system and method and liquefied natural gas (LNG) vaporization system and method. More particularly, heat from a CO.sub.2 containing stream from the power generating system and method can be used to heat the LNG for re-gasification as gaseous CO.sub.2 from CO.sub.2 containing stream is liquefied. The liquefied CO.sub.2 can be captured and/or recycled back to a combustor in the power generating system and method.

A heat exchange system employed to gasify liquid natural gas (LNG) or for other required purpose includes the cold substance such as LNG, a heat dissipation apparatus, a water storage tank, a heating portion, and a cooling portion. The heating portion is coupled between the cold substance and the water storage tank. The cooling portion is coupled between the heat dissipation apparatus and the water storage tank. The cooling portion transmits heat of the heat dissipation apparatus to water of the water storage tank to cool the heating portion, and the heating portion transmits heat of the water of the water storage tank to the cold substance.