Abstract: A fuel cell assembly comprising at least one metallic component, at least one ceramic component and a structure disposed between the metallic component and the ceramic component. The structure is configured to have a lower stiffness compared to at least one of the metallic component and the ceramic component, to accommodate a difference in strain between the metallic component and the ceramic component of the fuel cell assembly.

Abstract: The present techniques provide a novel electrolyzer and methods for welding components of such electrolyzers. The techniques may use conductors, such as resistance wires, placed in paths around the internal structural features and edges of the components. The conductors may be incorporated into the components during manufacture by injection molding, or other molding techniques, or may be tacked or otherwise applied to the surface of the components after manufacture. When current, a field or other excitation is applied to the conductors, the plastic surrounding the wire is melted. If this plastic is in direct contact with an adjoining component, a strong, hermetic seal may be formed between the two components, including the internal structural features.

Abstract: A fuel cell assembly comprising at least one metallic component, at least one ceramic component and a structure disposed between the metallic component and the ceramic component. The structure is configured to have a lower stiffness compared to at least one of the metallic component and the ceramic component, to accommodate a difference in strain between the metallic component and the ceramic component of the fuel cell assembly.

Abstract: A method for planning repair of an engine is provided. The method comprises monitoring an engine having a plurality of engine modules and determining one or more module-specific health estimates for one or more of the engine modules, based on a plurality of engine parameters. The method further comprises planning repair of the engine based on one or more of the module-specific health estimates determined for one or more of the engine modules.

Abstract: An oxidant distribution system for a fuel cell assembly includes a fuel cell having at least one oxidant inlet and at least one oxidant outlet, a housing surrounding the fuel cell and an insulation layer positioned between the housing and the fuel cell. The insulation layer defines a cavity adjacent to the oxidant inlet for channeling oxidant flow to the oxidant inlet. A fuel distribution system for a fuel cell assembly including similar features is also disclosed.

Abstract: A gas evolving bipolar electrolysis system is provided which includes multiple cells. Each cell further includes a cathode, an anode, at least one inlet and at least one outlet for flow of electrolyte and the cathode and the anode are configured to maintain a variable interelectrode gap between the cathode and the anode. In some embodiments, the cell includes a membrane disposed between the electrodes and in some other embodiments the electrodes are coated with electrocatalysts configured to provide uniform current density on the electrode surface.

Abstract: A method of operating an integrated hydrogen production and processing system is provided. The method includes operating an electrolyzer to produce hydrogen from water and utilizing heat generated from the electrolyzer to increase a temperature of an electrolyte in a first mode of operation. The method also includes heating the electrolyte in a second mode of operation by extracting heat from a hydrogen compressor to increase or maintain the temperature of the electrolyte during periods when electrolysis is not performed in the electrolyzer or during startup of the electrolyzer.

Abstract: A fuel cell stack assembly includes at least a first fuel cell and a second fuel cell electrically coupled together such that at least one sealed passage extends between the first and second fuel cells. Each of the fuel cells includes at least one hollow manifold that includes a wall extending between a first end and a second end. Each wall defines a chamber therein, and includes at least one opening extending therethrough in flow communication with the chamber. The fuel cell stack assembly also includes at least one fuel cell isolation device coupled in flow communication with each fuel cell hollow manifold. The at least one fuel cell isolation device is variably positionable during fuel cell stack assembly operation for selectively stopping fluid flow through at least one of the fuel cells.

Abstract: A structural reinforcement for a pressurized plastic electrochemical cell stack is described with a first endplate and a second endplate, wherein the first endplate and the second endplate are each connected to a structural reinforcement along an axial direction such that the reinforcement extends through the first endplate and the second endplate and provides for compressing the first endplate and the second endplate against a bilithic or monolithic plastic electrochemical cell stack internal to the reinforcement, thereby sealing a gas generation cell within the reinforcement and thus providing enhanced creep resistance of the electrochemical cell stack.

Abstract: A solid oxide fuel cell comprises at least one hollow manifold, an anode, an electrolyte, and a cathode. The at least one hollow manifold comprises a wall that defines a chamber therein. A plurality of openings extending through, such that the plurality of openings are in flow communication with the chamber. The anode is formed on an exterior surface of the wall. The electrolyte is deposited on the anode, and the cathode is deposited on the electrolyte.

Abstract: A power generation system comprising a liquid-cooled electrolyzer operable to produce a supply of hydrogen from water is provided. The power generation system may also comprise a steam turbine and a steam production device operable to produce a supply of steam to the steam turbine. The power generation system may also comprise a system operable to provide cooling liquid to the liquid-cooled electrolyzer and to couple heated cooling liquid from the liquid-cooled electrolyzer to the steam production device.

Abstract: A fuel cell stack includes at least one fuel cell unit and a number of interconnects defining at least two openings and including at least one flow field for flowing a reagent. Each opening defines a respective fuel manifold, including at least one each of intake and exhaust fuel manifolds. The fuel cell unit includes an anode, a cathode, and an electrolyte disposed therebetween. The anode is adjacent to and in both electrical connection and fluid communication with one of the interconnects, which has a flow field that guides a fuel flow between the intake and exhaust fuel manifolds. The cathode is adjacent to and in both electrical connection and fluid communication with another interconnect with a flow field that guides an oxidant flow. The fuel cell stack includes a perimeter isolation seal and at least two interior isolation seals for sealing the electrolyte to the respective interconnects.

Abstract: A solid oxide fuel cell comprises at least one hollow manifold, an anode, an electrolyte, and a cathode. The at least one hollow manifold comprises a wall that defines a chamber therein. A plurality of openings extending through, such that the plurality of openings are in flow communication with the chamber. The anode is formed on an exterior surface of the wall. The electrolyte is deposited on the anode, and the cathode is deposited on the electrolyte.

Abstract: A fuel cell stack includes at least one fuel cell unit and a number of interconnects defining at least two openings and including at least one flow field for flowing a reagent. Each opening defines a respective fuel manifold, including at least one each of intake and exhaust fuel manifolds. The fuel cell unit includes an anode, a cathode, and an electrolyte disposed therebetween. The anode is adjacent to and in both electrical connection and fluid communication with one of the interconnects, which has a flow field that guides a fuel flow between the intake and exhaust fuel manifolds. The cathode is adjacent to and in both electrical connection and fluid communication with another interconnect with a flow field that guides an oxidant flow. The fuel cell stack includes a perimeter isolation seal and at least two interior isolation seals for sealing the electrolyte to the respective interconnects.

Abstract: A combustion cap assembly for closing a forward end of a combustion chamber includes a radially inner substantially cylindrical component; a radially outer substantially conical component, extending substantially along an entire length dimension of the radially inner component; and an annular airflow passage therebetween.

Abstract: A combustion cap assembly for closing a forward end of a combustion chamber includes a radially inner substantially cylindrical component; a radially outer substantially conical component, extending substantially along an entire length dimension of the radially inner component; and an annular airflow passage therebetween.