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首页> 外文期刊>Energy Conversion & Management >Numerical study on channel size effect for proton exchange membrane fuel cell with serpentine flow field
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Numerical study on channel size effect for proton exchange membrane fuel cell with serpentine flow field

机译：蛇形流场质子交换膜燃料电池通道尺寸效应的数值研究

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摘要

This work numerically investigates the effect of the channel size on the cell performance of proton exchange membrane (PEM) fuel cells with serpentine flow fields using a three-dimensional, two-phase model. The local current densities in the PEM, oxygen mass flow rates and liquid water concentrations at the interface of the cathode gas diffusion layer and catalyst layer were analyzed to understand the channel size effect. The predictions show that smaller channel sizes enhance liquid water removal and increase oxygen transport to the porous layers, which improve cell performance. Additionally, smaller channel sizes also provide more uniform current density distributions in the cell. However, as the channel size decreases, the total pressure drops across the cell increases, which leads to more pump work. With taking into account the pressure losses, the optimal cell performance occurs for a cell with a flow channel cross-sectional area of 0.535 × 0.535 mm~2.
机译：这项工作使用三维，两相模型数值研究通道尺寸对具有蛇形流场的质子交换膜（PEM）燃料电池的电池性能的影响。分析了PEM中的局部电流密度，氧气质量流速和阴极气体扩散层与催化剂层界面处的液态水浓度，以了解通道尺寸效应。预测表明，较小的通道尺寸可提高液体水的去除能力，并增加氧气向多孔层的传输，从而改善电池性能。此外，较小的通道尺寸还可以在单​​元中提供更均匀的电流密度分布。但是，随着通道尺寸的减小，整个电池上的总压降会增加，从而导致更多的泵工作。考虑到压力损失，对于流道横截面积为0.535×0.535 mm〜2的电池，会出现最佳的电池性能。

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  • 来源
    《Energy Conversion & Management》 |2010年第5期|p.959-968|共10页
  • 作者

    Xiao-Dong Wang; Wei-Mon Yan; Yuan-Yuan Duan; Fang-Bor Weng; Guo-Bin Jung; Chi-Yuan Lee;

  • 作者单位

    Department of Thermal Engineering, School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China;

    Department of Mechatronic Engineering, Huafan University, Taipei 22305, Taiwan;

    Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China;

    Department of Mechanical Engineering, Fuel Cell Center, Yuan Ze University, NeiLi, Taoyuan 32003, Taiwan;

    Department of Mechanical Engineering, Fuel Cell Center, Yuan Ze University, NeiLi, Taoyuan 32003, Taiwan;

    Department of Mechanical Engineering, Fuel Cell Center, Yuan Ze University, NeiLi, Taoyuan 32003, Taiwan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    proton exchange membrane fuel cell; two-phase model; serpentine flow field; flow channel size;

    机译：质子交换膜燃料电池两阶段模型;蛇形流场流道尺寸;

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