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A computer model for a high temperature fuel cell

 

E. Hernández-Pacheco y M.D. Mann

 

Systems Research Center-Mexico, Intel, Tlaquepaque, Jalisco, Tel. Office:+52 3335406024, Fax:+52 3335406099, e-mail: eduardo.hernandez.pacheco@intel.com

Department of Chemical Engineering, University of North Dakota, Grand Forks-ND, e-mail: mikemann@mail.und.nodak.edu

 

Recibido el 30 de marzo de 2005;
aceptado el 16 de febrero de 2006

 

Abstract

A computer model is developed for determining the performance characteristics (e.g., current-voltage curves) of a solid oxide fuel cell. The model determines the fuel/oxidant concentration, the temperature profiles and the current density along the fuel and oxidant channels, respectively. Then, the average of the local current density distribution is used to determine the current-voltage curves (IV curves) over the entire range of cell potential, i.e., from open circuit voltage to short circuit voltage.

Keywords: Fuel cells; electrochemistry; computer modeling.

 

Resumen

Se desarrolla un modelo por computadora para determinar las características de desempeño (e.g., curvas de corriente y voltaje) de una celda de combustible de óxido sólido. El modelo determina la concentración de combustible/oxidante, el perfil de temperaturas y la densidad local de corriente a lo largo de los canales de combustible y oxidante, respectivamente. Posteriormente, el promedio de la distribución de la densidad de corriente se usa para crear las curvas de corriente-voltaje en el intervalo completo del potencial de la celda, i.e., desde el voltaje de circuito abierto hasta el voltaje de corto circuito.

Descriptores: Celdas de combustible; electroquímica; modelo computacional.

 

PACS: 82.47.Ed; 82.47.-a; 07.05.Tp

 

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Acknowledgments

This material is based upon work supported by the National Science Foundation under grant No. 0093923. We also gratefully acknowledge the Mexican Federal Goverment, through the Secretary of Economy and CONACyT, and the State of Jalisco for their partial support ofthis project.

 

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