The effect of anode bed geometry on the hydraulic behaviour of PEM fuel cells |
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| Affiliation: | 1. Department of Civil Engineering, University of Thessaly, Pedion Areos, Gr-38334 Volos, Greece;2. Department of Energy Technology Engineering, Technological & Educational Institute of Athens, Agiou Spiridonos 17, 12210 Athens, Greece;1. Atmospheric Research Team, Institute for Environmental Research and Sustainable Development, National Observatory of Athens, 11810 Athens, Greece;2. Collaborator of National Observatory of Athens on Contract to KRIPIS-THESPIA Programme, Greece;3. Aryabhatta Research Institute of Observational Science, Nainital 263 001, India;4. School of Natural Sciences, Shiv Nadar University, Tehsil Dadri 203207, India;1. Department of Mechanical Engineering, Azadshahr Branch, Islamic Azad University, Azadshahr, Iran;2. Department of Thermal and Fluids Engineering, Faculty of Mechanical Engineering, State University of Campinas (UNICAMP), Campinas, Brazil;3. Department of Mechanical Engineering, Universidade Federal de Minas Gerais (UFMG), BH, Brazil;1. BIOENERGY 2020+ GmbH, Location Wieselburg, Gewerbepark Haag 3, A-3250 Wieselburg-Land, Austria;2. Graz University of Technology, Institute of Thermal Engineering – Thermal Energy Systems and Biomass, Inffeldgasse 25/B, A-8010 Graz, Austria;3. University of Applied Forest Sciences Rottenburg, Schadenweilerhof, D-72108 Rottenburg am Neckar, Germany;1. School of Energy, Power and Mechanical Engineering, North China Electric Power University, Changping District, Beijing 102206, China;2. School of Control and Computer Engineering, North China Electric Power University, Changping District, Beijing 102206, China |
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| Abstract: | The influence of the anode bed geometry on the hydraulic behaviour of PEM fuel cells is assessed. Three basic geometrical patterns are studied, namely the interdigitated, the parallel and the serpentine ones, in their original, as well as in modified forms of them, in which their angles have been smoothed. Issues concerning the anode flow field of a fuel cell, the influence of the Reynolds number on pressure drop, the mass flowrate distribution along the anode bed channels and the residence time of the fluid inside the fuel cell are investigated. All different geometries are studied by means of 3D numerical flow simulations. The results indicate that the pressure drop, flowrate nonuniformity in bed channels and residence time increase as the flow Reynolds number increases. The effect of geometry smoothing on the results is also assessed. |
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| Keywords: | Fuel cell geometry Pressure loss Residence time CFD |
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