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首页> 外文会议>International Symposium on Multiphase Flow, Heat Mass Transfer and Energy Conversion >Reactant Gas Transport and Cell Performance of Proton Exchange Membrane Fuel Cells with Tapered Flow Field Design
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Reactant Gas Transport and Cell Performance of Proton Exchange Membrane Fuel Cells with Tapered Flow Field Design

机译：锥形流场设计的质子交换膜燃料电池的反应气体传输和电池性能

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摘要

The objective of this work is to examine the reactant gas transport and the cell performance of a proton exchange membrane fuel cell (PEMFC) with tapered flow channel. It is expected that, due to the reduction in the channel width along the streamwise direction, the flowing reactant fuel gas in the tapered flow channel will be accelerated and is forced into the gas diffusion layer to enhance the electrochemical reaction and then augment the cell performance. The effects of liquid water formation on the reactant gas transport are taken into account in the present study. Numerical predictions show that the cell performance can be enhanced by using a tapered flow field design, especially at the low voltage conditions. The results also reveal that, at low voltage conditions, the liquid water effects are especially significant and should be considered in the modeling.
机译：这项工作的目的是检查反应气体的输送和具有锥形流动通道的质子交换膜燃料电池（PEMFC）的电池性能。可以预期的是，由于沿流向的通道宽度的减小，锥形流动通道中流动的反应性燃料气体将被加速并被迫进入气体扩散层以增强电化学反应，从而增强电池性能。 。在本研究中考虑了液态水形成对反应物气体传输的影响。数值预测表明，通过使用锥形流场设计可以提高电池性能，尤其是在低电压条件下。结果还表明，在低压条件下，液态水的影响尤为明显，应在建模中加以考虑。

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