This paper reports a new study where radiation effects are studied in details in an SOFC stack. The 3D model used includes and couples fluid dynamics, electrochemistry, electrical conduction, diffusion, and heat transfer physics. The model was built using in-house experimental voltage-current density data for validation purposes. The objective of this study is to understand the effects of radiation in the flow channels of SOFC stacks. Both gas radiation and surface-to-surface heat exchange are considered. This study indicates that gas radiation is negligible when compared to surface-to-surface heat exchange. It is also found that surface-to-surface heat exchange cannot be neglected and actually provides a more uniform temperature distribution along the SOFC stack. Heat transfer via convection is also significant and should be included when modeling similar situations. Finally, the model indicates that viscous dissipation is a negligible source of heat generation.
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December 2012
This article was originally published in
Journal of Fuel Cell Science and Technology
Research-Article
Surface-to-Surface Radiation Exchange Effects in a 3D SOFC Stack Unit Cell
Gianfranco DiGiuseppe
Gianfranco DiGiuseppe
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Gianfranco DiGiuseppe
Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF FUEL CELL SCIENCE AND TECHNOLOGY. Manuscript received August 23, 2012; final manuscript received September 19, 2012; published online November 16, 2012. Editor: Nigel M. Sammes.
J. Fuel Cell Sci. Technol. Dec 2012, 9(6): 061007 (9 pages)
Published Online: November 16, 2012
Article history
Received:
August 23, 2012
Revision Received:
September 19, 2012
Citation
DiGiuseppe, G. (November 16, 2012). "Surface-to-Surface Radiation Exchange Effects in a 3D SOFC Stack Unit Cell." ASME. J. Fuel Cell Sci. Technol. December 2012; 9(6): 061007. https://doi.org/10.1115/1.4007816
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