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research-article

Modelling and designing of a radial anode off-gas recirculation fan for Solid Oxide Fuel Cell systems

[+] Author and Article Information
Patrick Hubert Wagner

Laboratory for Applied Mechanical Design (LAMD), École Polytechnique Fédérale de Lausanne (EPFL) Rue de la Maladière 71b, 2002 Neuchâtel, Switzerland
patrick.wagner@epfl.ch

Zacharie Wuillemin

HTceramix SA - SOLIDpower Av. des Sports 26, 1400 Yverdon-les-Bains, Switzerland
zacharie.wuillemin@solidpower.com

Stefan Diethelm

Group of Energy Materials (GEM), École Polytechnique Fédérale de Lausanne (EPFL) Rue de l’Industrie 17, 1951 Sion, Switzerland
stefan.diethelm@epfl.ch

Jan Van Herle

Group of Energy Materials (GEM), École Polytechnique Fédérale de Lausanne (EPFL) Rue de l’Industrie 17, 1951 Sion, Switzerland
jan.vanherle@epfl.ch

Jurg Schiffmann

Laboratory for Applied Mechanical Design (LAMD), École Polytechnique Fédérale de Lausanne (EPFL) Rue de la Maladière 71b, 2002 Neuchâtel, Switzerland
jurg.schiffmann@epfl.ch

1Corresponding author.

ASME doi:10.1115/1.4036401 History: Received September 14, 2016; Revised April 05, 2017

Abstract

To improve the industry benchmark of solid oxide fuel cell systems (SOFC), we consider anode off-gas recirculation using a small-scale fan. Evolutionary algorithms compare the different system design alternatives with hot or cold recirculation. The system performance is evaluated through multi-objective optimization criteria, i.e. maximization of electrical efficiency and cogeneration efficiency. The aerodynamic efficiency and rotordynamic stability of the high-speed recirculation fan is investigated in detail. The results obtained suggest that improvements to the best SOFC systems, in terms of net electrical efficiency, are achievable.

Copyright (c) 2017 by ASME
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