dc.contributor.author | Sauermoser, Marco | |
dc.contributor.author | Pollet, Bruno | |
dc.contributor.author | Kizilova, Nataliya | |
dc.contributor.author | Kjelstrup, Signe | |
dc.date.accessioned | 2022-09-09T10:59:00Z | |
dc.date.available | 2022-09-09T10:59:00Z | |
dc.date.created | 2021-05-03T10:55:00Z | |
dc.date.issued | 2021 | |
dc.identifier.citation | International Journal of Hydrogen Energy. 2021, . | en_US |
dc.identifier.issn | 0360-3199 | |
dc.identifier.uri | https://hdl.handle.net/11250/3016847 | |
dc.description.abstract | To have a uniform distribution of reactants is an advantage to a fuel cell. We report results for such a distributor with tree-like flow field plates (FFP). Numerical simulations have shown that the width scaling parameters of tree-like patterns in FFPs used in polymer electrolyte membrane fuel cells (PEMFC) reduces the viscous dissipation in the channels. In this study, experimental investigations were conducted on a 2-layer FF plate possessing a tree-like FF pattern which was CNC milled on high-quality graphite. Three FF designs of different width scaling parameters were employed. I–V curves, power curves and impedance spectra were generated at 70%, 60% and 50% relative humidity (25 cm2 active area), and compared to those obtained from a conventional 1-channel serpentine FF. It was found that the FF design, with a width scaling factor of 0.917 in the inlet and 0.925 in the outlet pattern, exhibited the best peak power out of the three designs (only 11% - 0.08 W/cm2 lower than reference serpentine FF). Results showed that a reduction of the viscous dissipation in the flow pattern was not directly linked to a PEMFC performance increase. It was found that water accumulation, together with a slight increase in single PEMFC resistance, were the main reasons for the reduced power density. As further improvements, a reduction of the number of branching generation levels and width scaling factor were recommended. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Elsevier | en_US |
dc.relation.uri | https://www.sciencedirect.com/science/article/pii/S0360319921010132 | |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Scaling factors for channel width variations in tree-like flow field patterns for polymer electrolyte membrane fuel cells - An experimental study | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.pagenumber | 15 | en_US |
dc.source.journal | International Journal of Hydrogen Energy | en_US |
dc.identifier.doi | 10.1016/j.ijhydene.2021.03.102 | |
dc.identifier.cristin | 1907717 | |
dc.relation.project | Norges forskningsråd: 262644 | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |