质子交换膜燃料电池泡沫金属流场传质性能
Study on the Mass Transfer Performance of Metal Foam Flow Fields in PEMFC
蔡永华 1陈凌宇 1魏帆1
作者信息
- 1. 武汉理工大学 现代汽车零部件技术湖北省重点实验室,武汉 430070;汽车零部件技术湖北省协同创新中心,武汉 430070;新能源与智能网联汽车湖北省工程技术研究中心,武汉 430070;武汉理工大学 汽车工程学院,武汉 430070
- 折叠
摘要
建立泡沫金属流场的三维完整形态,通过三维数值模拟进行研究,结果表明,泡沫金属流场可以有效地降低浓度极化损失,从而提高燃料电池在大电流密度下的性能,且与增加的输出功率密度相比,相应的泵送功率损失可以忽略不计.同时,在泡沫金属流场作用下,质子交换膜燃料电池内部的氧气浓度分布比传统的直流道的燃料电池更加均匀.通过台架试验,观测了泡沫流场中的液态水的流动状态,并通过三维数值模拟,得到了与试验相似的流动现象,且与传统直流道流场对比,泡沫金属流场对燃料电池水淹现象的改善有很大的帮助.
Abstract
The three-dimensional form of the metal foam flow field is established.Through three-dimensional numerical simulation,the results show that the metal foam flow field can effectively reduce the concentration polarization loss,thereby improving the performance of the fuel cell at high current densities.The increase in output power density is significant,while the corresponding pumping power loss is negligible.Furthermore,under the influence of the metal foam flow field,the oxygen concentration distribution inside the PEMFC is more uniform than that in the traditional straight-channel fuel cells.Bench experiments were conducted to observe the flow state of liquid water in the foam flow field and similar flow phenomenon was obtained through three-dimensional numerical simulations.Compared with the traditional straight-channel designs,the metal foam flow field is of great help in improving the flooding phenomenon in fuel cells.
关键词
质子交换膜燃料电池/泡沫金属流场/形态重建/数值模拟Key words
proton exchange membrane fuel cell/metal foam flow field/morphology reconstruction/numerical simulation引用本文复制引用
基金项目
国家自然科学基金面上项目(52176200)
出版年
2024
国家科技期刊平台
NSTL
万方数据