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首页> 外文会议>11th fuel cell science, engineering, and technology conference 2013 >NUMERICAL INVESTIGATION OF WATER AND TEMPERATURE DISTRIBUTIONS FOR OPEN-CATHODE POLYMER ELECTROLYTE FUEL CELL STACK WITH EDGE COOLING
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NUMERICAL INVESTIGATION OF WATER AND TEMPERATURE DISTRIBUTIONS FOR OPEN-CATHODE POLYMER ELECTROLYTE FUEL CELL STACK WITH EDGE COOLING

机译：带边缘冷却的开式阴极聚合物电解质燃料电池堆水和温度分布的数值研究

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摘要

Portable and motive applications of open-cathode polymer electrolyte fuel cells (PEFCs) require not only good stack performance but also a light and compact design. In this context, we explore how edge cooling with three different fin designs - one standard rectangular fin and two triangular fins that essentially halve the size of the fins - can improve the thermal and water envelopes inside the stack as well as stack performance whilst reducing the overall volume. The results suggest that all three edge-cooling designs give rise to lower and more uniform local temperature distributions as well as higher and more uniform hydration levels at the membrane in the stack compared to the conventional open-cathode PEFC without fins and design with additional air coolant plates. In addition, edge cooling design with one of the triangular fins yields the best performance (around 5% higher in term of power per unit catalyst area and power per unit weight; and ～10% higher in term of power per unit volume as compared to other designs). Overall, the triangular fin design shows potential to be used in, for example, automotive applications due to its high performance as well as lightweight and compact design.
机译：开放式阴极聚合物电解质燃料电池（PEFC）的便携式和动力应用不仅需要良好的堆叠性能，而且还需要轻巧紧凑的设计。在这种情况下，我们探索使用三种不同的散热片设计（一个标准的矩形散热片和两个基本上使散热片尺寸减半的三角形散热片）进行边缘冷却，如何改善电池组内部的散热和水封性能，同时降低电池组的散热性能。总体积。结果表明，与不带翅片的传统开放式阴极PEFC和带有附加空气的设计相比，所有三种边缘冷却设计均会导致烟囱中膜的更低和更均匀的局部温度分布以及更高和更均匀的水合作用水平。冷却板。此外，采用三角形散热片之一的边缘冷却设计可产生最佳性能（与每单位催化剂面积的功率和每单位重量的功率相比，提高约5％；与每单位体积的功率相比，提高约-10％）其他设计）。总体而言，三角形散热片设计由于其高性能以及轻巧紧凑的设计而具有在汽车应用中使用的潜力。

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