CIESC Journal

• TRANSPORT PHENOMENA & FLULD MECHANICS • 上一篇    下一篇

采用不同流场的质子交换膜燃料电池内部传递现象模拟

胡鸣若a,b; 朱新坚a; 顾安忠b

  

  1. a Institute of Fuel Cell, b Institute of Refrigeration and Cryogenics, Shanghai Jiaotong
    University, Shanghai 200030,China
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2004-02-28 发布日期:2004-02-28
  • 通讯作者: 胡鸣若

Simulation of the Internal Transport Phenomena for PEM Fuel Cells with Different Modes of
Flow

HU Mingruoa,b; ZHU Xinjiana; GU Anzhongb   

  1. a Institute of Fuel Cell, b Institute of Refrigeration and Cryogenics, Shanghai Jiaotong
    University, Shanghai 200030,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2004-02-28 Published:2004-02-28
  • Contact: HU Mingruo

摘要: A numerical model for proton exchange membrane (PEM) fuel cell is developed, which can
simulate such basic transport phenomena as gas-liquid two-phase flow in a working fuel
cell. Boundary conditions for both the conventional and the interdigitated modes of flow
are presented on a three-dimensional basis. Numerical techniques for this model are
discussed in detail. Validation shows good agreement between simulating results and
experimental data. Furthermore, internal transport phenomena are discussed and compared for
PEM fuel cells with conventional and interdigitated flows. It is found that the dead-ended
structure of an interdigitated flow does increase the oxygen mass fraction and decrease the
liquid water saturation in the gas diffusion layer as compared to the conventional mode of
flow. However, the cathode humidification is important for an interdigitated flow to
acquire better performance than a conventional flow fuel cell.

关键词: proton exchange membrane fuel cell;numerical model;liquid water saturation;conventional flow;interdigitated flow;humidification

Abstract: A numerical model for proton exchange membrane (PEM) fuel cell is developed, which can
simulate such basic transport phenomena as gas-liquid two-phase flow in a working fuel
cell. Boundary conditions for both the conventional and the interdigitated modes of flow
are presented on a three-dimensional basis. Numerical techniques for this model are
discussed in detail. Validation shows good agreement between simulating results and
experimental data. Furthermore, internal transport phenomena are discussed and compared for
PEM fuel cells with conventional and interdigitated flows. It is found that the dead-ended
structure of an interdigitated flow does increase the oxygen mass fraction and decrease the
liquid water saturation in the gas diffusion layer as compared to the conventional mode of
flow. However, the cathode humidification is important for an interdigitated flow to
acquire better performance than a conventional flow fuel cell.

Key words: proton exchange membrane fuel cell, numerical model, liquid water saturation, conventional flow, interdigitated flow, humidification