Abstract: A compressed hydrogen vehicle fuel dispensing system may include a sonic choke having an orifice defined in a generally cylindrical body having a throat between two opposed frustoconical sections. The system may include a plurality of sonic chokes connected in parallel with a plurality of hydrogen storage banks and configured to provide compressed hydrogen to a vehicle at desired flow rates. The fuel dispensing system may include a plurality of flow control valves configured to direct the flow of compressed hydrogen to the plurality of sonic chokes to control the flow rate of compressed hydrogen to the vehicle storage system. A method of fueling a vehicle with a compressed hydrogen is also presented.

Abstract: The present invention provides a process and apparatus for monitoring and inhibiting leaks from a hydrogen gas fueling system. A fueling event controller measures the pressure of the hydrogen gas before, during and after a fueling operation and if certain pressure values are exceeded, can shut down the hydrogen gas fueling system.

Abstract: Multi compressor systems and apparatuses for the manufacture, storage and dispensing of manufactured hydrogen fuel to hydrogen vehicle tanks or remote mobile refuelers are disclosed.

Abstract: The present invention provides a method and apparatus for producing a pressurized high purity liquid carbon dioxide stream in which a feed stream composed of carbon dioxide vapor is purified within a purifying filter and then condensed within a condenser. The result liquid is then alternately introduced and dispensed from two first and second pressure accumulation chambers. The first and second pressure accumulation chambers are heated by electrical heaters to pressurize the liquid to the required or desired delivery pressure of the pressurized liquid carbon dioxide stream. Such stream is alternately extracted from the first and second pressure accumulation chambers on a continuous basis in which one of the first and second pressure accumulation chambers acts in a dispensing role while the other is being filled. The pressurized liquid carbon dioxide stream can be further filtered within a particulate filter.