Effect of anisotropy of gas diffusion layers on two-phase heat and mass transport in polymer electrolyte fuel cells

U. Pasaogullari, P. P. Mukherjee, C. Y. Wang, K. S. Chen

Research output: Contribution to journalConference article

4 Scopus citations

Abstract

A non-isothermal, two-phase model is applied to a two-dimensional model of gas diffusion layer (GDL) to study the heat and mass transport in the in-plane direction (i.e. channel-to-land) and in the through-plane direction (i.e. catalyst layer-to-channel). For the first time, the anisotropy in the GDL thermal conductivity is taken into account, and found to be an important factor governing the temperature distribution in the GDL. Results predicted by our model show that the maximum temperature difference in the GDL is strongly affected by the GDL anisotropy. A temperature difference of up to 5°C is predicted, and a significant effect of temperature distribution on the water transport and distribution is observed. In addition, the latent heat effects due to condensation/evaporation of water on the temperature and water distributions are also analyzed and found to strongly affect the two-phase transport. copyright The Electrochemical Society.

Original languageEnglish (US)
Pages (from-to)1239-1248
Number of pages10
JournalECS Transactions
Volume3
Issue number1
DOIs
StatePublished - Dec 1 2006
EventProton Exchange Membrane Fuel Cells 6 - 210th Electrochemical Society Meeting - Cancun, Mexico
Duration: Oct 29 2006Nov 3 2006

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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