dc.contributor.author | Colombo, Konrad Werner Eichhorn | |
dc.contributor.author | Kharton, Vladislav | |
dc.contributor.author | Berto, Filippo | |
dc.contributor.author | Paltrinieri, Nicola | |
dc.date.accessioned | 2022-09-12T12:16:59Z | |
dc.date.available | 2022-09-12T12:16:59Z | |
dc.date.created | 2021-10-29T07:56:00Z | |
dc.date.issued | 2021 | |
dc.identifier.citation | Material Design & Processing Communications (MDPC). 2021, 3 (5), . | en_US |
dc.identifier.issn | 2577-6576 | |
dc.identifier.uri | https://hdl.handle.net/11250/3017274 | |
dc.description.abstract | We investigate failure incidents of a solid oxide fuel cell (SOFC) system during start-up from ambient conditions as well as during operation around the design point, using numerical simulation with a view to performance and thermo-mechanical stresses. During start-up, which comprises heating and load ramping phases, the system's trajectory moves through a relatively large temperature range. The simulated failure scenarios include reversible operational discontinuities in terms of input parameters and irreversible hardware failures. Furthermore, we also present results for a complete power cut. A multiphysics modeling approach is used to couple thermal, electrochemical, chemical, and thermo-mechanical phenomena by means of time-dependent partial differential, algebraic, and integral equations. Simulations revealed that the system can smooth out thermal discontinuities that are within a few minutes, that is, within the range of its thermal inertia. However, during the initial phase of the start-up procedure, thermo-mechanical stresses are relatively high due to larger differences between the sintering (manufacturing) and operation temperature, which makes the system more susceptible to failure. This work demonstrates that a multiphysics approach with control- and reliability-relevant aspects leads to a realistic problem formulation and analysis for practical applications. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Wiley | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Transient simulation of failures during start-up and power cut of a solid oxide fuel cell system using multiphysics modeling | en_US |
dc.type | Journal article | en_US |
dc.type | Peer reviewed | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.pagenumber | 18 | en_US |
dc.source.volume | 3 | en_US |
dc.source.journal | Material Design & Processing Communications (MDPC) | en_US |
dc.source.issue | 5 | en_US |
dc.identifier.doi | 10.1002/mdp2.177 | |
dc.identifier.cristin | 1949479 | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |