新型流场设计与优化提高了PEMFC的性能

IF 5.8 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Heat and Mass Transfer Pub Date : 2025-09-05 DOI:10.1016/j.ijheatmasstransfer.2025.127792

Ya Xie, Ying Huang, Jing Zeng, Tong Gao, Dongming Ye, Ruiying Chai

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引用次数: 0

摘要

流场设计对质子交换膜燃料电池（PEMFC）的性能有重要影响。本研究介绍了一种新型的扩张-直缩流场（ESCFF）设计，并将四种不同的流场与传统的蛇形流场和汇聚-发散型肺形蛇形流场（CDLIS）进行了比较。ESCFF-3设计（收缩比为0.4）表现出最佳性能，与蛇形相比，氧摩尔浓度提高了38.60%，与CDLIS相比提高了8.25%，氧气分布均匀性分别提高了11.0%和2.1%。与蛇纹石相比，液态水饱和度降低了16.32%，与CDLI相比降低了0.91%，净功率分别提高了23.7%和2.85%。这些改进源于ESCFF-3合理的进出口布置和结构设计。此外，响应面法（RSM）优化了操作参数和气体扩散层孔隙度，进一步提高了性能，净功率提高了3.84%。通过置信区间分析验证了这些结果的可靠性。综上所述，escf -3流场增强了膜的水化和除液能力，从而显著提高了PEMFC的输出性能。

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Enhanced performance of PEMFC through novel flow field design and optimization

The flow field design significantly impacts proton exchange membrane fuel cell (PEMFC) performance. This study introduces a novel expanding-straight-contracting flow field (ESCFF) design, comparing four variants against conventional serpentine and converging-diverging lung-shaped serpentine (CDLIS) configurations. The ESCFF-3 design (contraction ratio: 0.4) demonstrates optimal performance, increasing oxygen molar concentration by 38.60% versus serpentine and 8.25% versus CDLIS, while improving oxygen distribution uniformity by 11.0% and 2.1% respectively. Liquid water saturation is reduced by 16.32% compared to serpentine and 0.91% versus CDLI, with net power enhancements of 23.7% and 2.85%. These improvements stem from ESCFF-3′s rational inlet/outlet arrangement and structural design. Furthermore, response surface methodology (RSM) optimization of operational parameters and gas diffusion layer porosit further enhances performance, achieving a 3.84% increase in net power. The reliability of these results is validated through confidence interval analysis. In conclusion, the ESCFF-3 flow field enhances membrane hydration and liquid water removal capability, thereby significantly improving the output performance of PEMFC.

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来源期刊

International Journal of Heat and Mass Transfer 工程技术-工程：机械

CiteScore

10.30

自引率

13.50%

发文量

1319

审稿时长

41 days

期刊介绍： International Journal of Heat and Mass Transfer is the vehicle for the exchange of basic ideas in heat and mass transfer between research workers and engineers throughout the world. It focuses on both analytical and experimental research, with an emphasis on contributions which increase the basic understanding of transfer processes and their application to engineering problems. Topics include: -New methods of measuring and/or correlating transport-property data -Energy engineering -Environmental applications of heat and/or mass transfer