Despite the rapid growth of compute power in the last decades, the full-fledged, 3D mathematical models of fuel cells are not a viable option when it comes to applications requiring real-time capability; on the other hand, the current crop of 1D models apply boundary conditions pertinent merely to a single point in the cell – to provide data for effective fuel cell system design, a balance needs to be struck. The predictive power of a lower dimensionality fuel cell model can provide a reasonably detailed and accurate assessment and tracking of the fuel cell state and cater data to model-based control algorithms or define requirements for the selection of balance of plant components. To cover a wide parametric space and allow a rapid generation of the corresponding fuel cell system states, a combination of two 1D stationary models (a pseudo-2D model) has been chosen. One model defines the inlet conditions and tracks their evolution along a gas flow channel in a bipolar plate, while the second model (in our case the MMM1D published by Vetter and Schumacher) solves the evolving boundary-value problem throughout the membrane-electrode assembly (MEA) and calculates the fluxes of species, heat and charge exchanged between the gas flow channel and the MEA. Because the most significant changes in the media state (temperature, pressure, composition and flow rate) occur at the cell level, the model can estimate stack outlet conditions from the inlet conditions, extending the cell level model to a fuel cell system context. The results obtained for several operating points are used to discuss the choice of some system components.
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:76614 |
| Date | 27 May 2022 |
| Creators | Hrdlicka, Jiri, Sabuwala, Murtuza, Moya Saez, Senen, von Unwerth, Thomas |
| Contributors | Technische Universität Chemnitz |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/acceptedVersion, doc-type:conferenceObject, info:eu-repo/semantics/conferenceObject, doc-type:Text |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | urn:nbn:de:bsz:ch1-qucosa2-757412, qucosa:75741 |
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