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Modeling Effects of Two-Phase Transport in Cathode Gas Flow Channel on PEM Fuel Cell Performance

[+] Author Affiliations
Yun Wang

The University of California, Irvine, CA

Ken S. Chen

Sandia National Laboratories, Albuquerque, NM

Paper No. FuelCell2011-54116, pp. 567-573; 7 pages
doi:10.1115/FuelCell2011-54116
From:
  • ASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology collocated with ASME 2011 5th International Conference on Energy Sustainability
  • ASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology
  • Washington, DC, USA, August 7–10, 2011
  • Conference Sponsors: Advanced Energy Systems Division
  • ISBN: 978-0-7918-5469-3
  • Copyright © 2011 by ASME

abstract

The objective of this study is to make an attempt at developing a sub-model that can account for the presence of liquid water in the cathode channel and couple it with other key phenomena occurring in a PEM fuel cell, including those in the anode side. The two-phase sub-model in cathode gas flow channels is based on the two-phase mixture formula. Numerical results from case studies are presented in comparison with those predicted by the single-phase channel flow sub-model. Our preliminary results indicate that liquid water accumulates along the flow channels and builds up quickly once it emerges. For the operating conditions and cell geometry chosen for the case study present in the present work, our results show that the liquid water in the channel only slightly affects the fuel cell performance. More extensive case studies are needed.

Copyright © 2011 by ASME

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