Apparatus and methods for vaporizing liquid nitrogen at sufficient pressure, temperature, and volume to enable a single mobile pumper to meet the needs of many industrial applications. The dual-mode nitrogen pumper of the present invention utilizes a reciprocating pump and heat from the engine coolant and exhaust stream of an internal combustion engine, as well as heat from hydraulic fluid used to load the engine, and transfers that heat to liquid nitrogen pumped through a first heat exchanger and a second, internally-fired heat exchanger is provided to transfer heat to liquid nitrogen pumped through a second heat exchanger. The temperature of the hydraulic fluid is maintained, and the temperature, pressure, and flow rate of the vaporized nitrogen is controlled, by balancing the engine load against the nitrogen pumping rate.

A liquid hydrogen reservoir and a method for operating a liquid hydrogen reservoir. The liquid hydrogen reservoir includes a cryostatic container operable to hold liquid hydrogen; a discharge line operable to discharge gaseous hydrogen in the cryostatic container; a boil-off management system (BMS), a return line, and a boil-off valve (BOV). The BMS that includes a mixing chamber operable to mix the gaseous hydrogen with ambient air, a catalyst arranged downstream of the mixing chamber and operable for a catalytic conversion of the gaseous hydrogen with the ambient air, and an exhaust gas line arranged downstream of the catalyst and operable to discharge the gas stream to the environment. The return line is operable to connect the exhaust gas line to the mixing chamber to facilitate a return flow of at least a partial stream of the exhaust gas line into the mixing chamber. The BOV is arranged in the discharge line and operable to selectively open and close a flow connection of the discharge line to the BMS.

A refuelling device for supplying liquefied gas is provided, including a feed system adapted to place each reservoir in fluidic through connection with a tank and including withdrawal ducts for withdrawing the liquefied gas from the reservoirs; an inlet duct for introducing the liquefied gas into the tank; a collection manifold for conveying the withdrawal ducts into the inlet duct; a pump adapted to move the liquefied gas in the feed system; and a pressure gauge to measure the inlet pressure of the liquefied gas in the pump; and a valve adapted to regulate the flow in the inlet duct according to the inlet pressure.

The filling station (1) for means of transport (4) comprises: a supply (2) of a methane pipeline transporting gaseous methane; a liquefaction assembly (A) connected in a fluid-operated manner to the supply (2) and adapted to liquefy the gaseous methane conveyed by the methane pipeline to obtain liquid methane; at least one dispenser (3) of the liquid methane, which is connected in a fluid-operated manner to the liquefaction assembly (A) and is connectable in a removable manner to a means of transport (4) to supply the means of transport (4) with the liquid methane.

A system for dispensing a gaseous fuel from a liquefied fuel and a method for operating such a system are provided. The system includes a storage tank, a pressure sensor, a dispenser, a temperature sensor, and a vapor supply unit. The storage tank stores a liquefied fuel including phases of liquid and vapor. The pressure sensor is configured to measure a vapor pressure inside the storage tank. The dispenser is configured to receive the liquefied fuel and dispense the gaseous fuel to a receiving tank. The temperature sensor is configured to measure temperature of the dispenser. The system further includes a vapor supply unit fluidly coupled with the storage tank and configured to provide the vapor of the liquefied fuel from the storage tank into the dispenser or in thermally contact with at least one portion of the dispenser.

Some embodiments are directed to a module for depressurisation and storage of a portion of a gas layer coming from at least one cryogenic tank. Some other embodiments are directed to a system using such a module.

A liquid petroleum gas (LPG) fuel supply system for a vehicle having an internal combustion engine includes an LPG tank, a fuel pump housing, a fuel pump inside the fuel pump housing, a fuel supply line connected between the LPG tank and the fuel pump housing, and a vapor release port located on the fuel pump housing. The vapor release port is connected to the LPG tank by a vapor return line. The fuel pump housing fills with LPG from the LPG tank under the action of gravity. Vapor forms in the fuel pump housing, separates from the liquid, gathers toward the top of the fuel pump housing, and under the action of gravity, displaces through the vapor port, rises through the vapor return conduit, and is released into the LPG tank 19, balancing pressure and preventing vapor lock.

A refuelling device for supplying liquefied gas is provided, including a feed system adapted to place each reservoir in fluidic through connection with a tank and including withdrawal ducts for withdrawing the liquefied gas from the reservoirs; an inlet duct for introducing the liquefied gas into the tank; a collection manifold for conveying the withdrawal ducts into the inlet duct; a pump adapted to move the liquefied gas in the feed system; and a pressure gauge to measure the inlet pressure of the liquefied gas in the pump; and a valve adapted to regulate the flow in the inlet duct according to the inlet pressure.

An offshore LNG processing plant includes a first module including a personnel accommodation facility on a first vessel, a second module including a gas treatment facility on a second vessel, and a third module including a gas liquefaction facility on a third vessel. Each of the first, second, and third modules are assembled on the corresponding vessels, and then transported to an offshore location in a body of water, such as a river, a lake, or a sea. At the offshore location, each vessel deploys legs to the bed of the body of water to raise a hull of each vessel out of the water. The first module is then coupled to the second module, and the second module is coupled to the third module. A fourth module on a fourth vessel is coupled to the third module to provide LNG storage.

A process for transferring hydrogen from a first tank wherein the hydrogen is in an initial liquid state at a pressure of the order of 10 bar to a second tank wherein the hydrogen is in a final state at a pressure greater than or equal to 500 bar. The process includes: a first pumping step of the hydrogen from the initial state thereof to an intermediate state wherein the hydrogen has a pressure greater than that of the initial state thereof; and a second pumping step of the hydrogen from the intermediate state thereof to bring it to the final state thereof. The first pumping step and the second pumping step are carried out respectively by mutually separate first compression and second compression elements.