Abstract: A formed substrate assembly includes an air flow form plate, a fuel flow form plate, and an anode. The fuel flow form plate is positioned over the air flow form plate. The fuel flow form plate partially defines a plurality of first channels. The fuel flow form plate also defines a plurality of second channels. The plurality of second channels defines a plurality of apertures, where a portion of the apertures extend from the plurality of second channels to the plurality of first channels. The anode is positioned over the fuel flow form plate. The anode partially defines the plurality of first channels such that the fuel flow form plate and the anode define the plurality of first channels. The portion of the plurality of apertures is configured to channel a flow of fuel from the plurality of second channels to the plurality of first channels.

Abstract: A method and apparatus for detecting oxidation in at least one planar fuel cell stack that includes a multitude of cells is described. The height of the stack is measured to determine if there has been an increase from a previously-measured height. Such an increase correlates with the oxidation of at least some of the planar cells. In some cases, the fuel flow rate or airflow rate to each fuel cell stack can be adjusted, based in part on the oxidation detection technique. A power delivery system with at least two fuel cell stacks is also described, and it includes a stack height-measurement system, a health monitor for the fuel cell stacks, and a load balancer or airflow regulator.

Abstract: A flange assembly for use with a SOFC system includes a first flange, a second flange, and a dielectric element coupled between the first flange and the second flange. The dielectric element includes an outer cylindrical surface and an inner cylindrical surface. The inner cylindrical surface defines a cylindrical region having a circumference. The inner cylindrical surface also defines a channel that extends radially about the circumference of the cylindrical region.

Abstract: An integrated fuel cell system includes fuel cells, fuel heat exchangers, air heat exchangers, and tail gas oxidizers. The tail gas oxidizers oxidize a (second) portion of fuel received from the fuel cells with effluent that is output from the fuel cells. Fuel cell stacks are fluidly coupled with the fuel heat exchangers and the tail gas oxidizers such that the fuel that is output from the fuel cells is split into a first portion that is directed back into the fuel heat exchangers and a second portion that is directed into the tail gas oxidizers.

Abstract: A multi-stack fuel cell system includes upper and lower housings defining interior chambers in corresponding upper and lower stacks of fuel cells are disposed. A heat exchanger assembly is fluidly coupled with the interior chambers. The heat exchanger assembly receives input fuel and/or input air from outside of the housings and receives outgoing fuel and/or outgoing air from the fuel cells. The heat exchanger assembly heats the input fuel and/or the input air, and/or cools the outgoing fuel and/or the outgoing air. The heat exchanger assembly may be disposed between the upper and lower housings. The upper housing an upper stack of fuel cells and/or the heat exchanger assembly may assist in compressing the fuel cells in the lower stack against each other.

Abstract: An electric power generation system includes a fuel cell module. The fuel cell module includes a fuel cell and a compression plate. The compression plate includes a surface contacting the fuel cell. A support plate is opposite the compression plate. The compression plate is movable in relation to the support plate. A pressurized fluid container is disposed between the compression plate and the support plate. The pressurized fluid container includes a casing defining an internal space configured to contain pressurized fluid. The electric power generation system further includes a pressurized fluid source and a fluid line coupled to the pressurized fluid source and the pressurized fluid container.

Abstract: A fuel cell block for use in a fuel cell module includes a fuel cell. A heat exchanger coupled to the fuel cell includes a first heat exchange component, a second heat exchange component, and a casing defining an interior space. An air inlet pipe, a fuel inlet pipe, an air outlet pipe, and a fuel outlet pipe each channel fluid and at least partially extend through the interior space. A manifold includes a first surface and a second surface opposite the first surface. A plurality of openings is defined in the first surface and the second surface. The manifold is coupled to the fuel cell and the heat exchanger such that the first surface contacts the fuel cell and the second surface contacts the heat exchanger. The manifold is coupled to the air inlet pipe, the fuel inlet pipe, the air outlet pipe, and the fuel outlet pipe.

Abstract: A large stack redox flow battery system provides a solution to the energy storage challenge of many types of renewable energy systems. Independent reaction cells arranged in a cascade configuration are configured according to state of charge conditions expected in each cell. The large stack redox flow battery system can support multi-megawatt implementations suitable for use with power grid applications. Thermal integration with energy generating systems, such as fuel cell, wind and solar systems, further maximize total energy efficiency. The redox flow battery system can also be scaled down to smaller applications, such as a gravity feed system suitable for small and remote site applications.

Abstract: A redox flow battery system is provided with one or more tanks for containing electrolytes. Embodiments of electrolyte tanks include active and/or passive dividers within a single tank structure. Dividers may be configured to prevent mixing of a charged electrolyte and a discharged electrolyte stored within a single tank.

Abstract: A redox flow battery system is provided with independent stack assemblies dedicated for charging and discharging functions. In such a system, characteristics of the charging stack assembly may be configured to provide a high efficiency during a charging reaction, and the discharging stack may be configured to provide a high efficiency during a discharging reaction. In addition to decoupling charging and discharging reactions, redox flow battery stack assemblies are also configured for other variables, such as the degree of power variability of a source or a load. Using a modular approach to building a flow battery system by separating charging functions from discharging functions, and configuring stack assemblies for other variables, provides large-scale energy storage systems with great flexibility for a wide range of applications.

Abstract: A vibration damper for a racquet sport includes a score tallying device for keeping the score of t racquet sport such as tennis. The current score is maintained by an electronic circuit and displayed on an electronic display within the vibration damper. The vibration damper is configured to be attached to the racquet strings. The vibration damper and score keeper is preferably configured so that it displays only legitimate scores of the type of racquet sport for which it is intended.

Abstract: A vibration damper for a racquet sport includes a score tallying device for keeping the score of t racquet sport such as tennis. A rotating score indicator is provided with allowed score values for indicating the current score by rotation of the indicator by a user. Alternatively, the current score is maintained by an electronic circuit and displayed on an electronic display within the vibration damper. The vibration damper is configured to be attached to the racquet strings. The vibration damper and score keeper is preferably marked so that it displays only legitimate scores of the type of racquet sport for which it is intended.

Abstract: A fuel cell assembly (10) comprising a stack of a plurality of planar fuel cells (16) each comprising an electrolyte layer (20) having an anode layer (18) on one side and a cathode layer (22) on the other side and a plurality of interconnect members (12, 14), each fuel cell (16) being disposed between and in electrical contact with an adjacent pair of interconnect members (12, 14) with oxygen-containing gas passage means (28) being formed between the cathode layer (22) of each fuel cell (16) and the adjacent interconnect member (14) and fuel gas passage means (38, 42) being formed between the anode layer (18) of each fuel cell (16) and the adjacent interconnect member (12), and wherein a chamber (36) of greater height than the thickness of the respective fuel cell (16) is defined between the adjacent interconnect members (12, 14) in each pair within which the fuel cell (16) is received, and electrically conductive compressible means (32, 38, 40, 42) also disposed within the chamber (36) in electrical contact