Effective thermal management is critical to the successful design of small (<10 kW) solid oxide fuel cell (SOFC) power systems. While separate unit processes occur within each component of the system, external heat transport from or to components must be optimally managed and taken into account in system-level design. In this paper, we present a modeling approach that captures thermal interactions among hot zone components and couples this information with system process design. The resulting thermal model is then applied to a mobile SOFC power system concept in the 1–2 kW range to enable a better understanding of how component heat loss affects process gas temperature and flow requirements throughout the flowsheet. The thermal performance of the system is examined for various thermal management strategies that involve altering the convective and radiative heat transfer in the enclosure. The impact of these measures on internal temperature distributions within the cell-stack is also presented. A comparison with results from traditional adiabatic, zero-dimensional thermodynamic system modeling reveals that oxidant flow requirements can be over-predicted by as much as 110% and that important design constraints, such as the magnitude of the maximum cell temperature gradient within the stack, are under-predicted by over 40%.
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ASME 2010 8th International Conference on Fuel Cell Science, Engineering and Technology
June 14–16, 2010
Brooklyn, New York, USA
Conference Sponsors:
- Advanced Energy Systems Division
ISBN:
978-0-7918-4405-2
PROCEEDINGS PAPER
Implementing Thermal Management Modeling Into SOFC System-Level Design
K. J. Kattke,
K. J. Kattke
Colorado School of Mines, Golden, CO
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R. J. Braun
R. J. Braun
Colorado School of Mines, Golden, CO
Search for other works by this author on:
K. J. Kattke
Colorado School of Mines, Golden, CO
R. J. Braun
Colorado School of Mines, Golden, CO
Paper No:
FuelCell2010-33351, pp. 295-308; 14 pages
Published Online:
December 3, 2010
Citation
Kattke, KJ, & Braun, RJ. "Implementing Thermal Management Modeling Into SOFC System-Level Design." Proceedings of the ASME 2010 8th International Conference on Fuel Cell Science, Engineering and Technology. ASME 2010 8th International Fuel Cell Science, Engineering and Technology Conference: Volume 2. Brooklyn, New York, USA. June 14–16, 2010. pp. 295-308. ASME. https://doi.org/10.1115/FuelCell2010-33351
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