Numerical Investigation of In-Line and Staggered Trap Channels in the Serpentine Flow Field of PEMFCs

IF 5.3 3区 工程技术 Q1 ENGINEERING, MANUFACTURING
Ba Hieu Nguyen, Hyun Chul Kim
{"title":"Numerical Investigation of In-Line and Staggered Trap Channels in the Serpentine Flow Field of PEMFCs","authors":"Ba Hieu Nguyen, Hyun Chul Kim","doi":"10.1007/s40684-024-00649-1","DOIUrl":null,"url":null,"abstract":"<p>Enhancing the transverse velocity to the catalyst layer and exploiting the over-rib convection are popular methods for improving the power output of proton exchange membrane fuel cells (PEMFCs). The trap channel configuration for optimizing the cathode channel offers a simple and inexpensive solution for design and manufacture. This study investigated a three-channel PEMFC model with and without integrating trap channels. The simulation study revealed that the channel with trap configuration produces higher power than the original straight channel without causing an increase in pressure drop. The implementation of traps formed high transverse velocity zones at the end of each trap and increased the O<sub>2</sub> molar concentration at the gas diffusion layer (GDL)|catalyst layer (CL) interface but reduced the velocity magnitudes at the bipolar plate (BP)|GDL interface. Conversely, the staggered trap configuration exhibited a substantial positive impact on PEMFC performance through the augmentation of over-rib convection. The staggered configuration significantly outperformed the in-line trap configuration, yielding a remarkable maximum performance increase of 5.23% compared with the 2.07% enhancement observed in the in-line case.</p>","PeriodicalId":14238,"journal":{"name":"International Journal of Precision Engineering and Manufacturing-Green Technology","volume":"5 1","pages":""},"PeriodicalIF":5.3000,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Precision Engineering and Manufacturing-Green Technology","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s40684-024-00649-1","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, MANUFACTURING","Score":null,"Total":0}
引用次数: 0

Abstract

Enhancing the transverse velocity to the catalyst layer and exploiting the over-rib convection are popular methods for improving the power output of proton exchange membrane fuel cells (PEMFCs). The trap channel configuration for optimizing the cathode channel offers a simple and inexpensive solution for design and manufacture. This study investigated a three-channel PEMFC model with and without integrating trap channels. The simulation study revealed that the channel with trap configuration produces higher power than the original straight channel without causing an increase in pressure drop. The implementation of traps formed high transverse velocity zones at the end of each trap and increased the O2 molar concentration at the gas diffusion layer (GDL)|catalyst layer (CL) interface but reduced the velocity magnitudes at the bipolar plate (BP)|GDL interface. Conversely, the staggered trap configuration exhibited a substantial positive impact on PEMFC performance through the augmentation of over-rib convection. The staggered configuration significantly outperformed the in-line trap configuration, yielding a remarkable maximum performance increase of 5.23% compared with the 2.07% enhancement observed in the in-line case.

Abstract Image

PEMFC 蛇形流场中直列式和交错式捕集通道的数值研究
提高催化剂层的横向速度和利用过肋对流是提高质子交换膜燃料电池(PEMFC)功率输出的常用方法。用于优化阴极通道的阱通道配置为设计和制造提供了一种简单而廉价的解决方案。本研究调查了一个三通道 PEMFC 模型,其中有无集成捕集器通道。模拟研究表明,与原来的直通道相比,带有陷阱结构的通道能产生更高的功率,而且不会导致压降增加。在每个捕集阱的末端形成了高横向速度区,增加了气体扩散层(GDL)|催化剂层(CL)界面的氧气摩尔浓度,但降低了双极板(BP)|GDL界面的速度大小。相反,交错捕集器配置通过增强过肋对流对 PEMFC 性能产生了很大的积极影响。交错式结构的性能明显优于直列式结构,最大性能提高了 5.23%,而直列式结构只提高了 2.07%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
CiteScore
10.30
自引率
9.50%
发文量
65
审稿时长
5.3 months
期刊介绍: Green Technology aspects of precision engineering and manufacturing are becoming ever more important in current and future technologies. New knowledge in this field will aid in the advancement of various technologies that are needed to gain industrial competitiveness. To this end IJPEM - Green Technology aims to disseminate relevant developments and applied research works of high quality to the international community through efficient and rapid publication. IJPEM - Green Technology covers novel research contributions in all aspects of "Green" precision engineering and manufacturing.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信