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ISRN Chemical Engineering
Volume 2012 (2012), Article ID 709171, 6 pages
http://dx.doi.org/10.5402/2012/709171
Research Article

Comprehensive Simple Model on Solid Oxide Fuel Cells

1Centro de Análisis de Procesos, Universidad Central “Marta Abreu” de las Villas, Carretera a Camajuaní Km 5.5, Villa Clara, 54830 Santa Clara, Cuba
2Departamento de Ingeniería Química, Universidad Central “Marta Abreu” de las Villas, Carretera a Camajuaní Km5.5, Villa Clara, 54830 Santa Clara, Cuba
3Research Group ENVOC, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
4Departamento de Química, Universidad Central “Marta Abreu” de las Villas, Carretera a Camajuaní Km 5.5, Villa Clara, 54830 Santa Clara, Cuba

Received 2 April 2012; Accepted 24 April 2012

Academic Editors: M. Assael and J. A. González

Copyright © 2012 Luis E. Arteaga-Pérez et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The mathematical, multiphysic, multidimensional, and electrochemical modelation of a high temperature solid oxide fuel cell system (planar electrolyte-supported configuration) is discussed in the present paper. The mass transport within the cell is studied using the Stefan-Maxwel model, and the momentum balance is solved by means of Navier-Stokes and Brinkman equations, respectively. On the other hand, the energy balance includes the generation term coupled with the convection and conduction equations. It was demonstrated that the diffusion resistances play an important role in the cell performance, and the oxidant concentration is enough high to work at fuel utilization coefficient of 0.8. The current density suffers a reduction (10 A/m2 to 1 . 5 1 0 3  A/m2) due to the variation of reactants concentration at the cell outlet and the diffusive flux resistances. The developed models can be used to further analyses and to study a solid oxide fuel cell working with other fuels but hydrogen.