Determination of component drags coefficients in direct methanol fuel cell

Kazan, Emine Sena; Ciğeroğlu, Zeynep; Vasseghian, Yasser

doi:10.1016/j.seta.2022.102212

Cited by 1 publication

(1 citation statement)

References 48 publications

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“…Proton exchange membrane fuel cells (PEMFCs) are categorized into hydrogen fuel cells and liquid fuel cells based on the type of reactant. Within the category of liquid fuel cells, the direct methanol fuel cell (DMFC) is considered the most practical. , The DMFC offers numerous advantages, such as high energy density, environmental friendliness, safe fuel, and portability, making it a viable choice for remote power applications. ,, Potential applications for the DMFC include marine exploration, meteorological monitoring, and forest fire prevention.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Gas Distribution in DMFC Stacks Based on Experiments and CFD Simulations

Yang,

Zhai,

Liu

et al. 2024

Ind. Eng. Chem. Res.

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A 20-cell, 80 W direct methanol fuel cell (DMFC) stack was manufactured to investigate the power distribution among the cells. The experimental results indicated a poor cell performance in the middle section of the stack. Subsequent simulations revealed an insufficient gas supply to several cells located in the middle, which aligns with the underperformance in the experiments. This suggests that inadequate gas distribution was responsible for the poor cell performance. Numerical simulations demonstrated that uneven gas distribution was caused by the vortices. Consequently, novel flow field structures were developed to change the vortices in the manifold, resulting in a significant enhancement in the gas distribution uniformity. Experiments confirmed that this new design effectively improved the stack's performance. The findings of this study offer valuable insights for enhancing the flow field design of DMFC stacks.

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