Numerical optimization of channel to land width ratio for PEM fuel cell
Numerical optimization of channel to land width ratio for PEM fuel cell
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DOI：
10.1016/j.ijhydene.2017.12.149
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发表时间：
2018-06-07
影响因子：
7.2
通讯作者：
Toros, Serkan
中科院分区：
文献类型：
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作者：
Chowdhury, Mohammad Ziauddin;Genc, Omer;Toros, Serkan
流场在质子交换膜燃料电池中起着至关重要的作用，而通道的几何形状是影响流场的主要因素。大多数的渠道几何分析仅限于少数的案例研究，而在这项研究中，共有73个案例研究进行了分析，以优化渠道和土地的宽度。建立了三维等温单相流数学模型，并通过参数扫描函数对73个工况进行了优化，验证了模型的正确性。进行了优化分析的直通道的几何形状，考虑固定的工作电压为0.4 V和通道深度为1.0 mm。由于大量的案例研究，分析的性能参数，即电流密度和压降是很容易理解的变化，在不同的通道和土地宽度。计算结果表明，与槽脊宽度相比，通道宽度对压降的影响更大，阳极压降的影响小于阴极压降。然而，沟道和槽脊宽度对电池电流密度具有同等重要性。综合考虑流道压降和电流密度，优化分析表明，流道与槽脊宽度为1.0 mm/1.0 mm时，PEMFC流道的几何形状最合适。(C)2017年氢能出版有限责任公司。由爱思唯尔有限公司出版。保留所有权利。
Flow field plays a vital role in proton exchange membrane (PEM) fuel cell where channel geometry being the primary factor. Most of the channel geometry analyses were limited to few number of case studies, whereas in this study total 73 case studies were analyzed for the optimization of channel and land width. A three dimensional isothermal single phase flow mathematical model is developed and further validated with experimental study to optimize the channel and land width through parametric sweep function for a staggering 73 number of case studies. The optimization analyses are carried out for a straight channel geometry considering a fixed operating voltage of 0.4 V and channel depth of 1.0 mm. Due to the large number of case studies, the analyzed performance parameters i.e. current density and pressure drop are easily understandable for the change in different channel and land width. The numerical results predicted that the pressure drop is more dependent on channel width compare to the land width and anode pressure drop is less significant than cathode pressure drop. However, both channel and land width have an equal importance on the cell current density. Considering channel pressure drop and current density, the optimization analyses showed that the channel to land width of 1.0 mm/1.0 mm would be best suitable for PEMFC channel geometry. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.