Abstract:
An apparatus, system, and method are disclosed for processing a hydrogen gas stream comprising a housing, a condensing media, a mechanical filtration element, a coalescer element, and an outlet port. The housing comprises a heat- and pressure resistant material and has an internal chamber configured to receive a hydrogen gas stream. A condenser may cool the hydrogen gas stream to promote water condensation. The condensing media removes entrained liquid water from the hydrogen gas stream. The mechanical filtration element receives the hydrogen gas stream as the hydrogen gas stream exits the condensing media. The mechanical filtration element collects particulate matter from the hydrogen gas stream. The coalescer element receives the hydrogen gas stream as the hydrogen gas stream exits the mechanical filtration element. The coalesce element removes substantially all of the liquid water formed in the hydrogen gas stream.
Abstract:
The present invention generally relates to electrochemical systems for producing hydrogen and/or power. Various aspects of the invention are directed to reactor designs for producing hydrogen and/or power from a fuel and water, conducting ceramics and other materials for such systems, including mixed ionically and electrically conducting ceramics which can be used for hydrogen gas generation, control systems for such systems, and methods of operating such systems.
Abstract:
The invention relates to a fuel cell system, having at least one channel system (2) for a working fluid and having a device (12, 22) for adjusting the moisture content of the working fluid flowing in one direction (23) in the channel system (2), the device (12, 22) containing a sensor which represents the actual humidity in the channel system (2). The object of the invention is to develop a fuel cell system which allows reliable and dynamic measurement of the actual humidity. The invention consists in providing an ultrasonic detector (16, 17) for measuring actual humidity.
Abstract:
To obtain an electrolyte membrane that can prevent large stress formed in the membrane due to its expansion attributable to moisturization upon operation of a fuel cell and that allows the manufacturing of a membrane electrode assembly having high performance and durability. An electrolyte membrane 1 is moisturized. Intervals between a plurality of clamp pieces 21 at the periphery of an electrolyte membrane 2 expanded due to moisturization are adjusted so that an electrolyte membrane after dried is provided with a required difference in expansion rate, using the plurality of clamp pieces 21. The adjusted electrolyte membrane is dried without having to change the location of the clamp pieces 21, and an electrolyte membrane 3 is obtained. In this way, a plurality of regions having different expansion rates are formed in the plane of the electrolyte membrane 3.
Abstract:
There is described a method of operating a fuel cell comprising: inputting an anode reactant into an anode inlet and a cathode reactant into a cathode inlet of the fuel cell; flowing the anode reactant and the cathode reactant on respective flow field plates over a network of flow channels bounded by a series of passages; decreasing at least one of anode reactant water partial pressure and cathode reactant water partial pressure to adjust a water transfer rate from a cathode to an anode across a membrane; chemically reacting the anode reactant and the cathode reactant on catalysts in order to generate an electrical current; and outputting un-reacted anode reactant and un-reacted cathode reactant through an anode outlet and a cathode outlet, respectively.
Abstract:
The invention discloses a Novel Membrane Electrode Assembly And Its Manufacturing Process. A membrane electrode assembly comprises a gas diffusion layer and a layered structure made up of from 4 to 1000 layers including layers of a first type and layers of a second type, wherein the layers of the first type are electrolyte layers and the layers of the second type are catalyst layers, said layered structure having one or more catalyst functional regions, each made up of layers of the first and second types, and one or more electrolyte functional regions, each made up of layers of the first and second types.