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Effects of the Novel Flow Field Design on the DMFC Performance

机译：新颖流域设计对DMFC性能的影响

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摘要

The effect of flow field plate designs on the performance of a single-cell direct methanol fuel cell (DMFC) stack was investigated. Different from the regular serpentine flow field design in a square area, a novel variable length serpentine flow field in a circular area is designed. The two designs take the same channel width, channel depth, rib width and active area. Based on the experiments, a computational fluid dynamics (CFD) model was developed and simulated to investigate the reasons for this change in performances between two designs. The CFD simulation showed that fuel distribution and the local current density distribution on the catalyst layer was more uniform for the variable length serpentine flow field. Furthermore, the generated current density from the DMFC with variable length serpentine flow field is also higher than the regular serpentine flow field.
机译：研究了流场板设计对单细胞直接甲醇燃料电池（DMFC）堆叠的性能的影响。 与正方形区域中的常规蛇形流场设计不同，设计了一种圆形区域中的新型可变长度蛇形流场。 这两种设计采用相同的频道宽度，通道深度，肋宽和有效区域。 基于实验，开发了一种计算流体动力学（CFD）模型，以研究两个设计之间表现变化的原因。 CFD模拟表明，对于可变长度蛇形流场，燃料分布和催化剂层上的局部电流密度分布更均匀。 此外，具有可变长度蛇形流场的DMFC的产生电流密度也高于常规蛇形流场。

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