NDLI: Performance Study of a Planar Solid Oxide Fuel Cell Using a COMSOL Based 2D Model and Actual Cell Testing Geometry and Operating Conditions

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Digiuseppe, Gianfranco Gowda, Yeshwanth Javare Honnagondanahalli, Naveen Kumar
Copyright Year	2011
Abstract	This paper reports a new electrochemical performance study performed on a planar SOFC cell. This study consists of a 2D model developed using a commercial software, namely Comsol Multiphysics. The model includes fluid dynamics, electrochemistry, electrical conduction, and diffusion physics. This model was built using the actual button cell testing geometry and using experimental data for validation purposes. The objective of this study is to understand the effects of the testing setup used on the cell performance, and to recommend an improved design or geometry where the cell performance is independent of any flow maldistribution in both the air and fuel side of the SOFC cell. The air and fuel flow rates are studied to determine the effects on the cell performance. The effects of electrode porosities are studied together with the fuel and air flow rates. The distance from the SOFC cell to the discharge fuel feed tube and air chamber geometry are studied as well. The modeling results indicate that the SOFC electrochemical performance becomes independent of any flow maldistribution at relatively high flow rates for both fuel and air. Reduced electrode porosities play a role in the cell performance, and larger flow rates are required in order to achieve a cell performance independent of flow rates. The cell performance is also affected by the distance from the SOFC cell to the fuel discharge tube and the air chamber geometry. The behavior seen in the cell performance can be explained by a non-uniform mole fraction of reactants near the electrode surface.
Sponsorship	Advanced Energy Systems Division
Starting Page	337
Ending Page	354
Page Count	18
File Format	PDF
ISBN	9780791854693
DOI	10.1115/FuelCell2011-54104
Volume Number	ASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology
Conference Proceedings	ASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology collocated with ASME 2011 5th International Conference on Energy Sustainability
Language	English
Publisher Date	2011-08-07
Publisher Place	Washington, DC, USA
Access Restriction	Subscribed
Subject Keyword	Solid oxide fuel cells Fluid dynamics Computer software Fuels Flow (dynamics) Diffusion (physics) Modeling Geometry Electrodes Design Heat conduction Air flow Electrochemistry Testing
Content Type	Text
Resource Type	Article

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