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首页> 外文期刊>Journal of power sources >Evaluation of the optimal separator shape with reaction and flow analysis of polymer electrolyte fuel cell
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Evaluation of the optimal separator shape with reaction and flow analysis of polymer electrolyte fuel cell

机译：通过聚合物电解质燃料电池的反应和流动分析评估最佳隔板形状

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摘要

The small polymer electrolyte fuel cell (PEFC) was experimented by changing operation temperature and H_2 and O_2 concentration in supply gas, and the PEFC reaction characteristic model that can express these influences was created. Moreover, PEFC reaction and flow analysis model was made with this reaction characteristic model and thermal flow analysis model. Furthermore, in order to improve the performance and the safety of PEFC, five kinds of separators were evaluated from the viewpoint of state of gas flow, uniformity of current density and temperature, reduction of pressure loss and exhaustibility of liquid water with this PEFC reaction and flow analysis model. In case of parallel separator, flow rate and current density distribution was not uniform, and exhaustibility of the liquid water was low. In case of serpentine separator, pressure drop was large. In addition, semi-serpentine separator was designed for the shape which combines parallel separator and serpentine separator, and the temperature and current density distribution of this separator was more uniform than any other separators, so this separator was excellent.
机译：通过改变工作温度，改变进气中H_2和O_2的浓度，对小型聚合物电解质燃料电池（PEFC）进行了实验，建立了可以表达这些影响的PEFC反应特性模型。此外，利用该反应特性模型和热流分析模型建立了PEFC反应流分析模型。此外，为了提高PEFC的性能和安全性，从气流状态，电流密度和温度的均匀性，通过该PEFC反应降低液态水的压力损失和可排出性的角度出发，对五种分离器进行了评估。流量分析模型。在平行分离器的情况下，流速和电流密度分布不​​均匀，并且液态水的可排出性低。对于蛇形分离器，压降大。另外，半蛇形隔板设计为组合平行隔板和蛇形隔板的形状，并且该隔板的温度和电流密度分布比任何其他隔板都更均匀，因此该隔板是优异的。

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