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A Study on Mass Transfer in the Cathode Gas Channel of a Proton Exchange Membrane Fuel Cell

Published online by Cambridge University Press:  05 May 2011

K.-T. Jeng ,
C.-Y. Wen  and
L. D. Anh
K.-T. Jeng*
Affiliation:
Department of Mechanical and Automation Engineering, Da-Yeh University, Changhua, Taiwan 51591, R.O.C.
C.-Y. Wen*
Affiliation:
Department of Aeronautics and Astronautics, National Cheng-Kung University, Tainan, Taiwan 70101, R.O.C.
L. D. Anh*
Affiliation:
Department of Mechanical Automotive & Materials Engineering, University of Windsor, Windsor, Ontario Canada, N9B 3P4
*
*Associate professor
**Professor
***Graduate student
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Abstract

A two-dimensional, transient mathematical model for the mass transfer of a reactant gas in the cathode gas channel of a PEMFC is developed. This model accounts concurrently for gas flow and multicomponent species (oxygen, water vapor and nitrogen) transport in the gas channel at specified cell current densities. The governing equations along with the boundary and initial conditions are solved numerically by using finite-difference methods. The numerical results show that the oxygen and water vapor concentrations in the gas channel are strong functions of stoichiometry. However, at a fixed stoichiometry, the current density has only a slight influence on the concentration variations. The fully-developed Sherwood number for oxygen mass transfer in the gas channel was found to be 6.0, which agrees well with the Sherwood number estimated from the correlation between mass and heat transfer. The current mathematical model and numerical results are confirmed by the experimental verification of the location of first appearance of liquid water at the channel/GDL interface.

Keywords

Fuel cellGas channelMass transferSherwood number.
Type
Articles
Information
Journal of Mechanics , Volume 23 , Issue 4 , December 2007 , pp. 275 - 284
Copyright
Copyright © The Society of Theoretical and Applied Mechanics, R.O.C. 2007

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References

1.Bernardi, D. M. and Verbrugge, M. W., “A Mathematical Model of the Solid-Polymer-Electrolyte Fuel Cell,” J. Electrochem. Soc., 139, pp. 2477–2491 (1992).CrossRefGoogle Scholar
2.Nguyen, T. V. and Yi, J. S., “An Along-the-Channel Model for Proton Exchange Membrane Fuel Cells,” J. Electrochem. Soc., 145, pp. 1149–1159(1998).Google Scholar
3.Hsing, I. M. and Futerko, P., “Two-Dimensional Simulation of Water Transport in Polymer Electrolyte Fuel Cells,” Chemical Engineering Science, 55, pp. 4209–4218 (2000).CrossRefGoogle Scholar
4.Wang, Z. H., Wang, C. Y. and Chen, K. S., “Two-Phase Flow and Transport in the Air Cathode of Proton Exchange Membrane Fuel Cells,” J. Power Sources, 94, pp. 40–50 (2001).CrossRefGoogle Scholar
5.Wang, L. and Liu, H., “Performance Studies of PEM Fuel Cells with Interdigitated Flow Fields,” J. Power Sources, 134, pp. 185–196 (2004).CrossRefGoogle Scholar
6.Vynnycky, M. and Birgersson, E., “Analysis of a Model for Multi-Component Mass Transfer in the Cathode of a Polymer Electrolyte Fuel Cell,” Technical Reports SE–100–44, Dept. of Mechanics, Royal Institute of Technology, Stockholm, Sweden (2003).Google Scholar
7.Soong, C. Y., Yan, W. M., Tzeng, C. Y., Liu, H. C., Chen, F. and Chu, H. S., “Analysis of Reactant Gas Transport in a PEM Fuel Cell with Partially-Blocked Flow Channel Design,” J. Power Sources, 143, pp. 36–47(2005).CrossRefGoogle Scholar
8.Liu, H. C., Yan, W. M., Soong, C. Y. and Chen, F., “Effects of Baffle-Blocked Flow Channel on Reactant Transport and Cell Performance of a Proton Exchange Membrane Fuel Cell,” J. Power Sources, 142, pp. 125–133(2005).CrossRefGoogle Scholar
9.Arpaci, V. S. and Larsen, P. S., Convection Heat Transfer, Prentice-Hall, Inc., New Jersey, pp. 54–58 (1984).Google Scholar
10.Bird, R. B., Steward, W. E. and Lightfoot, E. N., Transport Phenomena, Wiley, New York, pp. 563–572 (1960).Google Scholar
11.Jeng, K. T., Lee, S. F., Tsai, G. F. and Wang, C. H., “Oxygen Mass Transfer in PEM Fuel Cell Gas Diffusion Layers,” J. Power Sources, 138, pp. 41–50 (2004).CrossRefGoogle Scholar
12.Tsai, B. T., “Visualization of Water Formation in the PEMFC and the Effects of Interfacial Pressure on Its Performance,” Master Thesis, Da-Yeh University, Taiwan (2005).Google Scholar
13.Mills, A. F., Basic Heat and Mass Transfer, IRWIN, Chicago, pp. 709–724 (1995).Google Scholar
14.Bejan, A., Convection Heat Transfer, Wiley, New York, pp. 100–107(1995).Google Scholar