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DOE OSTI · 1009408

Analyses of Large Coal-Based SOFCs for High Power Stack Block Development

Recknagle, Kurtis P·Koeppel, Brian J
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Abstract

This report summarizes the numerical modeling and analytical efforts for SOFC stack development performed for the coal-based SOFC program. The stack modeling activities began in 2004, but this report focuses on the most relevant results obtained since August 2008. This includes the latter half of Phase-I and all of Phase-II activities under technical guidance of VPS and FCE. The models developed to predict the thermal-flow-electrochemical behaviors and thermal-mechanical responses of generic planar stacks and towers are described. The effects of cell geometry, fuel gas composition, on-cell reforming, operating conditions, cell performance, seal leak, voltage degradation, boundary conditions, and stack height are studied. The modeling activities to evaluate and achieve technical targets for large stack blocks are described, and results from the latest thermal-fluid-electrochemical and structural models are summarized. Modeling results for stack modifications such as scale-up and component thickness reduction to realize cost reduction are presented. Supporting modeling activities in the areas of cell fabrication and loss of contact are also described.

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Recknagle, Kurtis P, Koeppel, Brian J. 2010-10-01. Analyses of Large Coal-Based SOFCs for High Power Stack Block Development. https://doi.org/10.2172/1009408

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