التفاصيل البيبلوغرافية
| العنوان: |
Three-dimensional simulation of transport processes in PEMFC considering two-phase effects. (English) |
| المؤلفون: |
TU Hai-tao, SUN Wen-ce, XIE Mao-zhao, Abuliti |
| المصدر: |
Journal of Dalian University of Technology / Dalian Ligong Daxue Xuebao; Jan2009, Vol. 49 Issue 1, p55-59, 5p |
| مصطلحات موضوعية: |
POROUS materials synthesis, PROTON exchange membrane fuel cells, MATHEMATICAL models, ISOTHERMAL processes, CURRENT density (Electromagnetism), WATER vapor |
| مستخلص: |
A three-dimensional non-isothermal mathematical model is developed for proton exchange membrane fuel cell (PEMFC) with conventional flow field. The heat and mass transfer and the electrochemical reactions are simulated considering phase change of water. The effects of water vapor condensation and liquid water distribution in porous media on transport processes and cell performance are analyzed, and the results are compared with those of singlephase model. The calculation indicates that the condensation of water vapor enhances the transport of reactant gases to reaction interfaces while decreasing the permeability of porous media. There is a lack of water in anode side at high outpu.t current densities for the two models and this requires more effective water management. And the singlephase model underestimates the actual ohmic polarization for neglecting the condensation of water vapor [ABSTRACT FROM AUTHOR] |
|
Copyright of Journal of Dalian University of Technology / Dalian Ligong Daxue Xuebao is the property of Journal of Dalian University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Supplemental Index |
