This paper conducts a multiscale parametric study of temperature and composition effects on the transport phenomenon of a solid oxide fuel cell (SOFC). The molecular dynamics technique was employed to study the transport phenomenon of the solid electrolyte, which is made of yttria-stabilized zirconia. The influences of concentration and various operation temperatures on the SOFC were studied. Simulation results show that there exists an optimal concentration of of in the composition for oxygen transport. Also higher operation temperature promotes the oxygen ion-hopping process that increases the ionic conductivity. A macroscale parametric study was also conducted in this paper to validate the influence of the temperature uniformity in the solid electrolyte by employing the computational fluid dynamics technique. The temperature distribution maps of a single-cell planar SOFC with coflow, counterflow and cross-flow channel designs are presented. The results conclude that the coflow configuration is the best design of the three.
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e-mail: cwhong@pme.nthu.edu.tw
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November 2005
This article was originally published in
Journal of Fuel Cell Science and Technology
Research Papers
Multiscale Parametric Studies on the Transport Phenomenon of a Solid Oxide Fuel Cell
C. H. Cheng,
C. H. Cheng
Department of Power Mechanical Engineering,
National Tsing Hua University
, Hsinchu 30013, Taiwan
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Y. W. Chang,
Y. W. Chang
Department of Power Mechanical Engineering,
National Tsing Hua University
, Hsinchu 30013, Taiwan
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C. W. Hong
C. W. Hong
Department of Power Mechanical Engineering,
e-mail: cwhong@pme.nthu.edu.tw
National Tsing Hua University
, Hsinchu 30013, Taiwan
Search for other works by this author on:
C. H. Cheng
Department of Power Mechanical Engineering,
National Tsing Hua University
, Hsinchu 30013, Taiwan
Y. W. Chang
Department of Power Mechanical Engineering,
National Tsing Hua University
, Hsinchu 30013, Taiwan
C. W. Hong
Department of Power Mechanical Engineering,
National Tsing Hua University
, Hsinchu 30013, Taiwane-mail: cwhong@pme.nthu.edu.tw
J. Fuel Cell Sci. Technol. Nov 2005, 2(4): 219-225 (7 pages)
Published Online: May 12, 2005
Article history
Received:
April 11, 2004
Revised:
May 12, 2005
Citation
Cheng, C. H., Chang, Y. W., and Hong, C. W. (May 12, 2005). "Multiscale Parametric Studies on the Transport Phenomenon of a Solid Oxide Fuel Cell." ASME. J. Fuel Cell Sci. Technol. November 2005; 2(4): 219–225. https://doi.org/10.1115/1.2039950
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