Development of a variable-porosity metal-foam model for the next fuel cells flow-distributors

Kermani, M.J.; Moein‐Jahromi, M.; Hasheminasab, Mohammadreza; Wei, Lin; Guo, Jian; Jiang, Fangming

doi:10.1016/j.ijhydene.2021.11.058

Cited by 9 publications

(3 citation statements)

References 56 publications

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“…To mitigate this issue, in addition to surface hydrophobicity improvement, water management strategies can also be implemented, e.g., functionally graded or variable porosity design , and multiple subzone division …”

Section: Challenges and Future Prospectsmentioning

confidence: 99%

Porous Flow Field for Next-Generation Proton Exchange Membrane Fuel Cells: Materials, Characterization, Design, and Challenges

Zhang

Tao

et al. 2022

Chem. Rev.

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Porous flow fields distribute fuel and oxygen for the electrochemical reactions of proton exchange membrane (PEM) fuel cells through their pore network instead of conventional flow channels. This type of flow fields has showed great promises in enhancing reactant supply, heat removal, and electrical conduction, reducing the concentration performance loss and improving operational stability for fuel cells. This review presents the research and development progress of porous flow fields with insights for next-generation PEM fuel cells of high power density (e.g., ∼9.0 kW L–1). Materials, fabrication methods, fundamentals, and fuel cell performance associated with porous flow fields are discussed in depth. Major challenges are described and explained, along with several future directions, including separated gas/liquid flow configurations, integrated porous structure, full morphology modeling, data-driven methods, and artificial intelligence-assisted design/optimization.

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Section: Challenges and Future Prospectsmentioning

confidence: 99%

Porous Flow Field for Next-Generation Proton Exchange Membrane Fuel Cells: Materials, Characterization, Design, and Challenges

Zhang

Tao

et al. 2022

Chem. Rev.

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“…Therefore, the microscopic contact resistance is small and ignored in this study. In addition, recently a fabrication method has been presented based on compression technique to produce a unified porous foam with gradient porosity 37,38 in other applications. Hence, the contact resistance is eliminated in this kind of unified porous‐gradient base foam. The volumetric averaging method was employed using the Darcy‐Forchheimer model for simulation of the PCM‐foam composite heat sink, and the governing equations are presented as follows 28,39 :…”

Section: Physical and Numerical Model Descriptionmentioning

confidence: 99%

Section: Governing Equationsmentioning

confidence: 99%

Performance evaluation of concentrated photovoltaics with phase change materials embedded metal foam‐based heat sink using gradient strategy

Rahmanian‐Koushkaki

Rahmanian

Moein‐Jahromi

et al. 2022

Intl J of Energy Research

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A novel passive cooling heat sink for thermal regulation of concentrated photovoltaics (CPV) and its performance improvement based on phase change material (PCM) embedded in the metal foam has been introduced in this study. Eighteen different patterns have been considered for the heat sink to investigate the influence of series/parallel porosity gradient arrangement, foam material gradient, inclination angle, and pore density. A computational fluid dynamics simulation has been developed to analyze the transient heat charging mechanism and evaluate the effects of porosity/material gradient with different arrangements on the conduction/convection heat transfer processes in the foam-PCM-CPV. The results revealed that parallel positive porosity gradient in y-direction could enhance the natural convection and the conduction heat transfer compared to the series negative porosity gradient in the xdirection and reduce the time-average CPV temperature by 6.76 C and enhance the time-average electrical efficiency by 3.93%. The results also indicated that using an obtuse inclination angle instead of anacute one may reduce the CPV temperature by about 5 C and leads to an electrical efficiency improvement of 2.65%. The lower value of pore density is another determinative factor that could enhance the total absorbed heat by about 12% for different patterns.

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Power Density and Durability in Fuel Cell Vehicles

Heidary¹,

Moein‐Jahromi²

2023

Hydrogen Electrical Vehicles

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Development of a variable-porosity metal-foam model for the next fuel cells flow-distributors

Cited by 9 publications

References 56 publications

Porous Flow Field for Next-Generation Proton Exchange Membrane Fuel Cells: Materials, Characterization, Design, and Challenges

Porous Flow Field for Next-Generation Proton Exchange Membrane Fuel Cells: Materials, Characterization, Design, and Challenges

Performance evaluation of concentrated photovoltaics with phase change materials embedded metal foam‐based heat sink using gradient strategy

Power Density and Durability in Fuel Cell Vehicles

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