Portable natural gas distribution systems for dual fuel fleets such as hydraulic fracturing fleets are described.

Embodiments of systems and methods for transporting fuel and carbon dioxide (CO.sub.2) in a dual-fluid vessel thereby minimizing transportation between locations are disclosed. In an embodiment, the dual-fluid vessel has an outer shell with two or more inner compartments, positioned within the outer shell, including a first inner compartment for storing CO.sub.2 and a second inner compartment for storing fuel. The dual-fluid vessel may connect or attach to a transportation vehicle to thereby allow transportation of the fuel and CO.sub.2. Insulation may provide temperature regulation for the fuel and CO.sub.2 when positioned in the respective first and second inner compartments. One or more ports having an opening in and through the outer shell and a fluid pathway to one or more of the first inner compartment or the second inner compartment may provide fluid communication through the opening and fluid pathway for loading/offloading the fuel and/or CO.sub.2.

A liquid cryogen stored in a liquid cryogen space of a closed insulated cryogenic storage vessel is subcooled by allowing it to enter into a conduit disposed in the liquid cryogen space where it is expanded by a pressure reducer in the conduit, thereby producing a cooled biphasic mixture of the cryogen in liquid and vaporized forms. The cooled biphasic mixture has a temperature lower than that of the liquid cryogen in the liquid cryogen space. Heat is transferred across the conduit from the liquid cryogen in the liquid cryogen space to the cooled biphasic mixture.

Disclosed is a gas injection apparatus which measures and displays a gas amount supplied to a radiosonde instrument.

The gas injection apparatus includes: a body which includes an inlet port through which the gas is introduced from the storage tank, a flow passage through which the gas introduced from the inlet port flows, and an outlet port through which the gas passing through the flow passage is discharged; a valve which opens/closes the flow passage, and a flow meter which is installed in the body and is configured to measure and display the flow rate of the gas supplied to the instrument.

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

Device for filling pressurized gas tanks, in particular hydrogen tanks of vehicles, comprising a fluid transfer circuit having an upstream end connected to a plurality of sources (2 to 10) of pressurized fluid and a downstream end comprising at least one dispenser intended to be connected to a tank to be filled, the sources (2 to 10) being connected in parallel to the at least one dispenser, each source (2 to 10) comprising a fluid outlet connected to a respective outlet valve (22 to 30), the sources (2 to 10) being connected in parallel in different subgroups to respective transfer lines (35 to 37), i.e. all the sources of a same subgroup are connected in parallel to a dedicated transfer line (35 to 37), each of several subgroups and preferably all subgroups of sources comprising multiple sources, the transfer lines (35 to 37) being connected in parallel to the at least one dispenser and each comprising a respective transfer valve (32 to 34), the at least one dispenser comprising a set of control valve(s), the at least one dispenser and its set of control valve(s) being dimensioned so as to transfer a predetermined maximum filling gas flow, the outlet valves (22-30), the transfer lines (35-37) and the transfer valves (32-34) being dimensioned so as to transfer a maximum transfer gas flow which is smaller than the maximum filling gas flow, the sum of a plurality of maximum transfer gas flows provided by a plurality of outlet valves (22-30) and a plurality of transfer lines (35-37) being greater than or equal to the maximum filling gas flow.

A cryogenic fluid transfer device comprising a first tank, a second tank, and a fluid transfer circuit, wherein the first tank comprises a cryogenic fluid distribution tank configured to store a cryogenic fluid in a liquid phase in a lower part thereof and in a gaseous phase in an upper part thereof, wherein the second tank comprises a cryogenic receiving tank configured to house the cryogenic fluid in liquid phase in a lower part thereof and in gaseous phase in an upper part thereof, wherein the fluid transfer circuit is configured to connect the first and second tanks, the fluid transfer circuit comprising a first pipe connecting the upper parts of the first and second tanks and comprising at least one valve, and a second pipe connecting the lower part of the first tank to the second tank that comprises a pump that has an inlet connected to the first tank and an outlet connected to the second tank, wherein: the pump and the at least one valve of the first line are configured so as to ensure a fluidic connection of the upper parts of the first and second tanks by opening the at least one valve during a transfer of the cryogenic fluid in liquid phase from the first tank to the second tank with the pump.

The disclosure generally describes an apparatus for simulating a refueling operation for a fuel cell electric vehicle (FCEV). The fuel is compressed hydrogen gas dispensed by hydrogen refueling station (HRS).

A quantity of gas is introduced into a gas reservoir via a filling station provided with a filling line. The quantity is measured. A signal is generated indicating a corrected quantity of transferred gas. The signal is obtained by adding a predetermined, positive or negative, corrective amount to the measured quantity of gas transferred.

The invention relates to a container (1) for pressurized fluid, in particular a gas cylinder, having a given internal volume (2), having a fluid distribution valve (3) having a member for selecting the flow rate (12) able to adopt a plurality of distinct positions each corresponding to a given fluid flow rate, and an electronic device (7) having means for measuring pressure, microprocessor (15)-based data processing means (5) for processing the pressure measurements, and display means (6) for displaying the remaining fluid calculated by the data processing means (5).