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首页> 外文期刊>International Journal of Electrochemical Science >The Effect of the Geometric Parameters on the Air Flow Distrib ution Uniformity within the Protonic Ceramic Fuel Cell Stack
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The Effect of the Geometric Parameters on the Air Flow Distrib ution Uniformity within the Protonic Ceramic Fuel Cell Stack

机译：几何参数对质子陶瓷燃料电池堆内的空气流量分布均匀性的影响

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摘要

Compared with the traditional fuel cells, the protonic ceramic fuel cell (PCFC) has attracted more and more attentions due to its advantages on intermediate temperature zone. In this paper, the 3D calculated fluid dynamics model for a typical PCFC stack has been developed to study the dependence and sensitivity of the flow distribution uniformity on different geometric parameters. The result shows that although the vapors are generated within the cathode sides, enlarging the manifold radius and decreasing the cell number will greatly increase the air flow distribution uniformity of PCFC stack. Increasing the a factor of PCFC stack will keep decreasing the slop of the air flow distribution line. Thus, it’s not like bigger a is better in any case. For a small/large manifold radius, the slops of the flow distributing line will changed greatly/gently, while a factor is adjusted. Although increasing the feed/exhaust header width will increase the flow distributing uniformity over the cathode surface of each PCFC unit, its effect on the flow distribution among the piled PCFC units is negligible.
机译：与传统燃料电池相比，由于其在中间温度区的优点，质子陶瓷燃料电池（PCFC）引起了越来越多的关注。在本文中，已经开发了一种典型PCFC堆栈的3D计算流体动力学模型，用于研究不同几何参数的流分布均匀性的依赖性和灵敏度。结果表明，尽管在阴极侧产生蒸汽，但扩大歧管半径并降低电池数将大大增加PCFC堆叠的空气流量分布均匀性。增加PCFC堆栈的因素将不断降低空气流量分配线的斜面。因此，在任何情况下，它都不像更大的A更好。对于小/大的歧管半径，流动分配线的曲线将大大变化/轻轻，而调整因子。虽然增加进料/排气头宽度将增加每个PCFC单元的阴极表面上的流量分布均匀性，但其对堆积的PCFC单元中的流分布的影响可以忽略不计。

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