流场结构对阴离子交换膜电解槽性能影响的研究

DING Rui,CHEN Tao, LAN Yang,CHEN Ziyu, XIAO Fei

Journal of Hebei University of Science and Technology（2024）

Cited 0|Views6

Abstract

为了探究不同流场结构对阴离子交换膜电解槽(anion exchange membrane water electro-lyzer,AEMWE)性能的影响及其机理,基于计算流体力学(computational fluid dynamics,CFD)方法对双极板的平行流场、单蛇形流场、双蛇形流场3种流场结构形式下AEMWE进行数值分析,确定在流速分布、压力分布、温度分布以及氢气浓度和极化性能等方面综合性能最佳的双极板流场结构.结果表明,与在平行流场以及单蛇形流场结构下相比,在双蛇形流场结构下AEMWE的进出口压降为2 400 Pa更为适中、电流密度更大、平均氢气浓度为1.031 8 mol/m3以及温度分布均匀系数为0.003 8.双蛇形流场结构下AEMWE的传质传热以及能耗控制更佳、整体性能最好,为后续优化流场结构设计和制造AEMWE提供了参考.

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Key words

electrolysis,anion exchange membrane,flow field design,computational fluid dynamics,three-dimensional numerical modeling

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【要点】：研究不同流场结构对阴离子交换膜水电解装置性能的影响，发现双路径流场结构在流速分布、压力分布、温度分布、氢浓度及极化性能方面表现最优。

【方法】：利用计算流体动力学（CFD）对三种流场结构（平行、单路径、双路径）的阴离子交换膜水电解装置（AEMWE）进行数值分析。

【实验】：通过模拟实验，使用三种不同流场结构的AEMWE，得到双路径流场结构下的入口和出口压降为2,400 Pa，电流密度较大，平均氢浓度为1.031 8 mol/m³，温度分布均匀性系数为0.003 8，表现出更优的质量和热量传递控制以及能耗表现。实验未明确提及具体使用的数据集名称。