PEM单通道电解槽的数值仿真模拟  

Numerical simulation of a single-channel PEM electrolyzer

作　　者：肖天涛 王新东[1] XIAO Tiantao;WANG Xindong

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083

出　　处：《节能》2024年第10期48-51,共4页Energy Conservation

基　　金：国家自然科学基金(项目编号:22279007)。

摘　　要：通过COMSOL Multiphysics软件搭建三维稳态多物理场质子交换膜(PEM)单通道电解槽模型,研究阳极操作条件对电解槽性能的影响,对比不同水温和不同水速条件下电解槽的性能差异。结果显示,阳极入口水流速较小时,阳极催化层中液态水的饱和度较低,导致电化学速率降低,流速过大又会降低催化层的温度从而影响速率。增大入口水温可以增大膜的电导率,但是会降低催化层中液态水的饱和度。流速为0.6 m/s,水温为80℃时,电解槽性能最好。A three-dimensional steady-state multi-physics field PEM single-channel electrolyzer model was constructed by software COMSOL Multiphysics.The effects of anode operating conditions on the performance of the electrolyzer were mainly investigated,and the differences in the performance of the electrolyzer at different water temperatures and different water velocities were compared.The results indicate that when the flow rate at the anode inlet is relatively low,the saturation of liquid water in the anode catalyst layer is comparatively low,leading to a reduction in the electrochemical reaction rate.Conversely,an excessively high flow rate can decrease the temperature of the catalyst layer,thereby affecting the rate.Increasing the inlet water temperature can enhance the conductivity of the membrane,but it may also reduce the saturation of liquid water in the catalyst layer.The electrolyzer performs optimally at a flow rate of 0.6 m/s and a water temperature of 80 ℃.

关 键 词：PEM电解槽 多物理场 数值模拟 

分 类 号：TK91[动力工程及工程热物理]