Performance of Simplified Interval Models for Simulation and Control of Solid Oxide Fuel Cells (Artikel)

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Performance of Simplified Interval Models for Simulation and Control of Solid Oxide Fuel Cells (Artikel)
Autor Ekaterina Auer, Luise Senkel, Stefan Kiel, Andreas Rauh
In: Proceedings of the Fourth International Conference on Soft Computing Technology in Civil, Structural and Environmental Engineering
Ausgabe Herausgeber Y. Tsompanakis and J. Kruis and B.H.V. Topping, Civil-Comp Press
ISBN/ISSN: 1759-3433
Erscheinungsjahr 2015
Jahrgang
Seitenzahl doi:10.4203/ccp.109.3
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Review

In this paper, we introduce simplified models for the thermal subsystem of solid oxide fuel cells, which are considered to consist of two preheaters and one finite volume element to describe the temperature of the stack. The simplifying assumption, which allows us to obtain analytic solutions to the underlying system of differential equations, is to consider the heat capacities of the gases as zero-order polynomials in temperature. We compare the performance of such models and their ability to reflect the reality with the corresponding characteristics of models in which the heat capacities are approximated by quadratic polynomials. For this purpose, the framework {\sc UniVerMeC} is used, which allows us to employ different kinds of arithmetics including the interval one. This latter possibility ensures a high level of reliability of simulations and of the subsequent validation. Besides, it helps to take into account bounded uncertainty in measurements.