A fuel storage and distribution system for a gas-fueled sea-going vessel includes a tank room that constitutes a gastight space enclosing tank connections and valves associated with them. A part of a refrigeration or air conditioning circuit reaches into the tank room. A first local heat transfer circuit is configured to receive heat from the part of the refrigeration or air conditioning circuit in the tank room and arranged to transfer such received heat to liquefied gas fuel handled in the fuel storage and distribution system.

Hydrogen storage system (1) comprising a casing (2), a plurality of storage-compression containers (6) forming at least one multi-container unit (4), and a metal hydride (MH) configured for hydrogen storage contained within each of the storage-compression containers, the plurality of storage-compression containers of said at least one multi-container unit being interconnected by gas flow tubes in a direct fluidic connection ensuring that the gas pressure within the containers are substantially the same. The plurality of storage-compression containers are mounted inside a chamber (16) of the casing, the casing configured to sustain a vacuum in said chamber to test leakage of said at least one multi-container unit.

A system for depressurizing a gas in a pipeline is described. The system com-prises an expander configured and arranged for generating mechanical power by expanding gas from a first pressure to a second pressure. The system further comprises a heat pump and a heat transfer circuit containing a heat transfer fluid circu-lating therein, for receiving heat from the heat pump and delivering heat to the gas through a heat exchanger. A controller is further provided, configured and arranged for modulating a flow rate of the heat transfer fluid circulating in the heat transfer circuit as a function of a heat rate to be transferred from the heat transfer fluid to the gas, particularly as a function of temperature differentials between the gas and the heat transfer fluid at a gas inlet side and a gas outlet side of the heat exchang-er.

Liquid cryogen from a tank having a head space pressure P1 is vaporized with a pressure building vaporizer to gaseous cryogen and the pressure of the gaseous cryogen is built to a pressure P2. The pressurized gaseous cryogen at pressure P2 is expanded across an expander to decrease its pressure and fed to a point of use at an installation including the vaporizer at a pressure P3. P22P3. Energy from the expanded gas may be recovered in the form of mechanical energy, electrical energy.

An apparatus for producing a liquefied gas using a Rankine cycle is provided. The apparatus includes a first compression means for adiabatically compressing a heat transfer medium; a first heat exchanger for constant pressure heating the adiabatically compressed heat transfer medium; a plurality of parallelly arranged expansion means for adiabatically expanding the heated heat transfer medium; a second heat exchanger for constant pressure cooling the adiabatically expanded heat transfer medium; and a flow passageway for guiding the heat transfer medium that has been guided out from the second heat exchanger to the first compression means.

An apparatus and a method for cooling and compressing a fluid to produce a low-temperature compressed fluid that can efficiently use the cold of LNG and reduce the energy needed, the apparatus using a Rankine cycle system having a first compression device, a first heat exchanger, an expansion device, a second heat exchanger, and a first flow passageway for guiding the heat transfer medium from the second heat exchanger to the first compression device; and at least one second compression device that is coupled to the expansion device, wherein at the second heat exchanger, a low-temperature LNG and the heat transfer medium undergo heat transfer, wherein at the first heat exchanger, a fed material gas and the heat transfer medium undergo heat transfer to produce a low-temperature fluid from the material gas, and the low-temperature fluid is compressed at the second compression device to produce a low-temperature compressed fluid.

An apparatus includes a high-pressure tank, a controller, a valve, controlled by the controller, and a heater.

An intelligent pressure management system that controls the pressure inside a cryogenic tank between variable target vapor pressure values and/or ranges that are set as a function of system operating conditions, by actuating an actively controllable valve disposed on a gaseous fluid vapor conduit; and in some embodiments, additionally by actuating an actively controllable valve on a liquefied gaseous fluid conduit, based on a signal received from a pressure sensor that measures the pressure inside the pressurized tank. The variable target vapor pressure values and/or ranges are determined as a function of at least two system operating conditions which can include the vapor volume in the storage space; the fluid flow demanded by the use device; and a measured temperature parameter that correlates to the temperature of the fluid exiting a heater.

A fuel storage and distribution system for a gas-fueled sea-going vessel includes a thermally insulated gas tank for storing liquefied gas fuel. A local heat transfer circuit is configured to extract heat from an external heat source circuit. As a part of said local heat transfer circuit a heating arrangement is configured to heat gas fuel for increasing pressure inside the gas tank. As a part of said local heat transfer circuit is a main gas evaporator for evaporating liquefied gas fuel drawn from the gas tank for delivery to an engine of the sea-going vessel.

A cryogenic vaporization system and method are provided. A first heat exchanger heats a liquid cryogen via indirect heat exchange to output a cryogenic vapor at a first temperature. A second heat exchanger receives the cryogenic vapor at the first temperature. The second heat exchanger heats the cryogenic vapor via indirect heat exchange to a second temperature. The cryogenic vapor at the second temperature is recirculated to the first heat exchanger to heat the liquid cryogen and cool the recirculated cryogenic vapor to a third temperature. A third heat exchanger receives the cryogenic vapor at the third temperature. The third heat exchanger heats the cryogenic vapor to a fourth temperature. The third heat exchanger outputs the cryogenic vapor at the fourth temperature.