Manifold, bus support and coupling arrangement for solid oxide f

Details Manifold, bus support and coupling arrangement for solid oxide f Manifold, bus support and coupling arrangement for solid oxide f

1988-04-21

1989-04-25

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

429 34, H01M 810

Patent

active

048247421

ABSTRACT:
Individual, tubular solid oxide fuel cells (SOFCs) are assembled into bundles called a module within a housing, with a plurality of modules arranged end-to-end in a linear, stacked configuration called a string. A common set of piping comprised of a suitable high temperture resistant material (1) provides fuel and air to each module housing, (2) serves as electrically conducting buses, and (3) provides structural support for a string of SOFC modules. The piping thus forms a manfold for directing fuel and air to each module in a string and makes electrical contact with the module's anode and cathode to conduct the DC power generated by the SOFC. The piping also provides structureal support for each individual module and maintains each string of modules as a structurally integral unit for ensuring high strength in a large 3-dimensional array of SOFC modules. Ceramic collars are used to connect fuel and air inlet piping to each of the electrodes in an SOFC module and provide (1) electrical insulation for the current carrying bus bars and gas manifolds, (2) damping for the fuel and air inlet piping, and (3) proper spacing between the fuel and air inlet piping to prevent contact between these tubes and possible damage to the SOFC.

REFERENCES:
patent: 4431715 (1984-02-01), Isenberg
patent: 4476196 (1984-10-01), Poeppel et al.
Zymboly, "Vapor Deposition of Stabilized Zirconium Oxide Electrolyte and Lanthanum Chromite Interconnection for Multiple Cell Fabrication", Westinghouse Electric Corporation, BNL 51728, Aug. 1983.
Isenberg, "Growth of Refractory Oxide Layers by Electrochemical Vapor Deposition (EVD) At Elevated Temperatures", Proc. of The Sym. On Electrode Materials and Processes for Energy Conversion and Storage ECS, Proc. vols. 77-6, 1977.
Merrigan et al. "High Temperature Heat Pipes for Waste Heat Recovery", AIAA--80--1505, 15th Thermophysics Conference, Jul. 1980.
Lundberg, "Silicon Carbide--Tungsten Heat Pipes for High--Temperature Service", Ind. Eng. Chem. Prod. Res. Dev. 1980, 19, 241-244.

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