A gaseous hydrogen storage and distribution system with a cryogenic supply and a method for the cryogenic conversion of liquid hydrogen into high-pressure gaseous hydrogen are provided. The gaseous hydrogen storage and distribution system includes pressuring liquid hydrogen from a cryogenic tank using a low pressure liquid pump before vaporization within a relatively small vaporizer. The resulting high pressure gaseous hydrogen is transferred to a plurality of storage tanks at ambient temperature according to a desired fill sequence. The high pressure hydrogen gas is subsequently distributed from the storage tanks through a hydrogen fueling dispenser according to a desired dispensing sequence. The present system and method provide improvements in operational safety, eliminates the use of high pressure gas compressor, and minimizes boiling off and ventilation losses at a reduced cost when compared to existing thermal compression storage systems.

Embodiments of the invention relate to vaporizer systems including two-phase heat transfer devices for vaporizing liquids and methods of using the same.

In a method for reheating an atmospheric vaporizer, a cryogenic liquid is vaporized by heat exchange with ambient air in the atmospheric vaporizer and to reheat the vaporizer, a gas is sent thereto at a temperature of at least 0° C., this gas originating from a cryogenic distillation air separation unit.

According to one embodiment, there is provided a storage condition monitoring device for monitoring a storage condition in a cryogenic storage container. The storage condition monitoring device includes an input/output (I/O) circuitry, a memory circuitry, a processor circuitry, a user interface and a storage condition monitor circuitry. The I/O circuitry is configured to receive a first total weight from a weight sensor. The first total weight includes a weight of the cryogenic storage container and a first weight of a content contained in the cryogenic storage container. The cryogenic storage container is configured to contain a coolant and a biological material storage subcontainer. The user interface is configured to provide at least one of a visual indicator, an audible indicator and/or an electronic indicator. The storage condition monitor circuitry is configured to determine a current storage condition of the cryogenic storage container based, at least in part, on the first total weight. The storage condition monitor circuitry is further configured to select a storage condition status indicator based, at least in part, on the current storage condition and to provide the storage condition status indicator to one or more of the user interface, a worker device and a supervisor device.

A hydrogen station operation method capable of adjusting pressure in a reservoir to the pressure suitable for liquid hydrogen replenishment while cutting hydrogen waste is for replenishing liquid hydrogen into the reservoir in a hydrogen station including: a gasification path partially gasifying liquid hydrogen out of the reservoir and returning it; and a gas delivery path delivering gasified hydrogen in the reservoir into a path between a vaporizer and a compressor or the vaporizer, when the remainder of liquid hydrogen in the reservoir becomes a first threshold or less, by reducing the liquid hydrogen amount flowing through the gasification path by a valve therein, reducing the gasification amount of liquid hydrogen in the reservoir, and increasing the hydrogen gas amount delivered through the gas delivery path from the reservoir by a valve therein, pressure in the reservoir is reduced, thereby performing operation where suction pressure of the compressor is reduced.

In accordance with one aspect of the present disclosure, a mobile machine includes a LNG fuel tank to provide natural gas to a natural gas engine, a pressure relief valve to relieve pressure to a relief vent line, and a liquid separation device. The liquid separation device includes a canister defining an interior space and having a top end and a bottom end, a LNG inlet configured to receive mixed phase fluid into the canister from the relief vent line, a separator disposed within the interior space and fluidly connected to the LNG inlet, the separator configured to direct condensed liquid to the bottom end and to pass vapor to the interior space, a vapor outlet disposed on the top end of the canister, and a liquid drain disposed on the bottom end of the canister.

Aspects disclosed herein provide systems and methods for mixing and dispensing fuel. The method includes flowing cryogenic fuel from a storage tank through a cold portion of a process heat exchanger to a first vaporizer, flowing the cryogenic fuel from the first vaporizer through a warm portion of the process heat exchanger to obtain an intermediate temperature fuel exiting the process heat exchanger, and separating the intermediate temperature fuel into a first stream and a second stream. The method further includes directing the first stream through a second vaporizer to obtain a warm stream, combining the warm stream and the second stream to obtain a target fuel temperature stream, and dispensing the target fuel temperature stream through at least one dispenser.

A method of recondensing boil off gas includes receiving liquefied natural gas from a storage tank and increasing the pressure of the received liquefied natural gas to produce increased pressure liquefied natural gas. The method further includes receiving boil off gas from the storage tank at a gas inlet of an ejector, and receiving the increased pressure liquefied natural gas at a liquefied gas inlet of the ejector. The pressure of the increased pressure liquefied gas is used as a motive force to eject combined liquefied natural gas and boil off gas at a pressure greater than that of the boil off gas received at the gas inlet of the ejector. The method additionally includes increasing the pressure of the fluid ejected from the ejector to produce increased pressure ejected fluid.

A hydrogen refilling station for filling tanks of fuel cell electric vehicles includes a liquid hydrogen tank that feeds liquid hydrogen to an upstream end of a filling circuit that also includes a heat exchanger. The heat exchanger exchanges heat between the liquid hydrogen and heat transfer fluid flows to thereby cool the heat transfer fluid and vaporize the liquid hydrogen to provide a supply of high pressure hydrogen gas for filling hydrogen-fueled vehicle tanks at a downstream end of the circuit. Because the liquid hydrogen is surrounded by the heat transfer fluid inside the heat exchanger, little if any fogging occurs.

A hydrogen refilling station for filling tanks of fuel cell electric vehicles includes a liquid hydrogen tank that feeds liquid hydrogen to an upstream end of a filling circuit that also includes a heat exchanger. The heat exchanger exchanges heat between the liquid hydrogen and heat transfer fluid flows to thereby cool the heat transfer fluid and vaporize the liquid hydrogen to provide a supply of high pressure hydrogen gas for filling hydrogen-fueled vehicle tanks at a downstream end of the circuit. Because the liquid hydrogen is surrounded by the heat transfer fluid inside the heat exchanger, little if any fogging occurs.