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Conjugate Mass Transfer in Gas Channels and Diffusion Layers of Fuel Cells

[+] Author Affiliations
S. B. Beale

National Research Council, Ottawa, ON, Canada

Paper No. FUELCELL2005-74017, pp. 1-8; 8 pages
doi:10.1115/FUELCELL2005-74017
From:
  • ASME 2005 3rd International Conference on Fuel Cell Science, Engineering and Technology
  • 3rd International Conference on Fuel Cell Science, Engineering and Technology
  • Ypsilanti, Michigan, USA, May 23–25, 2005
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-3764-5 | eISBN: 0-7918-3757-2
  • Copyright © 2005 by National Research Council of Canada

abstract

An analysis is performed for mass transfer in a rectangular gas passage, porous diffusion layer, and the combination of the two. The results of detailed calculations are presented and correlated in terms of the mass transfer driving force as a function of the blowing parameter and geometry, as characterized by the aspect ratio and blockage factor. It is shown that a simple solution for the overall driving force may be obtained for the conjugate mass transfer problem. This solution is quite general in its nature. The mathematical foundations are presented together with the details of the computational procedure used to obtain the results.

Copyright © 2005 by National Research Council of Canada

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