It is expected that fuel cells will play a significant role in a future sustainable energy system due to their high energy efficiency and possibility to use as renewable fuels. Fuels, such as biogas, can be produced locally close to the customers. The improvement for fuel cells during the past years has been fast, but the technology is still in the early phases of development; however, the potential is enormous. A computational fluid dynamics (CFD) approach (COMSOL MULTIPHYSICS) is employed to investigate effects of different fuels such as biogas, prereformed methanol, ethanol, and natural gas. The effects of fuel inlet composition and temperature are studied in terms of temperature distribution, molar fraction distribution, and reforming reaction rates within a singe cell for an intermediate temperature solid oxide fuel cell. The developed model is based on the governing equations of heat, mass, and momentum transport, which are solved together with global reforming reaction kinetics. The result shows that the heat generation within the cell depends mainly on the initial fuel composition and the inlet temperature. This means that the choice of internal or external reforming has a significant effect on the operating performance. The anode structure and catalytic characteristic have a major impact on the reforming reaction rates and also on the cell performance. It is concluded that biogas, methanol, and ethanol are suitable fuels in a solid oxide fuel cell system, while more complex fuels need to be externally reformed.
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June 2011
This article was originally published in
Journal of Fuel Cell Science and Technology
Research Papers
Modeling Analysis of Different Renewable Fuels in an Anode Supported SOFC
Martin Andersson,
Martin Andersson
Department of Energy Sciences, Faculty of Engineering,
e-mail: martin.andersson@energy.lth.se
Lund University
, Box 118, 221 00 Lund, Sweden
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Hedvig Paradis,
Hedvig Paradis
Department of Energy Sciences, Faculty of Engineering,
Lund University
, Box 118, 221 00 Lund, Sweden
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Jinliang Yuan,
Jinliang Yuan
Department of Energy Sciences, Faculty of Engineering,
Lund University
, Box 118, 221 00 Lund, Sweden
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Bengt Sundén
Bengt Sundén
Department of Energy Sciences, Faculty of Engineering,
Lund University
, Box 118, 221 00 Lund, Sweden
Search for other works by this author on:
Martin Andersson
Department of Energy Sciences, Faculty of Engineering,
Lund University
, Box 118, 221 00 Lund, Swedene-mail: martin.andersson@energy.lth.se
Hedvig Paradis
Department of Energy Sciences, Faculty of Engineering,
Lund University
, Box 118, 221 00 Lund, Sweden
Jinliang Yuan
Department of Energy Sciences, Faculty of Engineering,
Lund University
, Box 118, 221 00 Lund, Sweden
Bengt Sundén
Department of Energy Sciences, Faculty of Engineering,
Lund University
, Box 118, 221 00 Lund, SwedenJ. Fuel Cell Sci. Technol. Jun 2011, 8(3): 031013 (9 pages)
Published Online: March 1, 2011
Article history
Received:
August 12, 2010
Revised:
August 16, 2010
Online:
March 1, 2011
Published:
March 1, 2011
Citation
Andersson, M., Paradis, H., Yuan, J., and Sundén, B. (March 1, 2011). "Modeling Analysis of Different Renewable Fuels in an Anode Supported SOFC." ASME. J. Fuel Cell Sci. Technol. June 2011; 8(3): 031013. https://doi.org/10.1115/1.4002618
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