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A Thermally Self-Sustaining Miniature Solid Oxide Fuel Cell

Ahn, Jeongmin and Ronney, Paul D. and Shao, Zongping and Haile, Sossina M. (2007) A Thermally Self-Sustaining Miniature Solid Oxide Fuel Cell. In: 5th International Energy Conversion Engineering Conference and Exhibit (IECEC). American Institute of Aeronautics and Astronautics , Reston, VA, Art. No. 2007-4767. ISBN 978-1-62410-155-7. https://resolver.caltech.edu/CaltechAUTHORS:20200429-081654031

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Abstract

A thermally self-sustaining miniature power generation device was developed utilizing a single-chamber solid oxide fuel cell (SOFC) placed in a controlled thermal environment provided by a spiral counterflow "Swiss roll" heat exchanger and combustor. With the single-chamber design, fuel/oxygen crossover due to cracking or seals via thermal cycling is irrelevant and coking on the anode is practically eliminated. Appropriate SOFC operating temperatures were maintained even at low Reynolds numbers (Re) via combustion of the fuel cell effluent at the center of the Swiss roll. Both propane and higher hydrocarbon fuels were examined. Extinction limits and thermal behavior or the integrated system were determined in equivalence ratio - Re parameter space and an optimal regime for SOFC operation was identified. SOFC power densities up to 420 mW/cm² were observed at low Re. These results suggest that single-chamber SOFC's integrated with heat-recirculating combustors may be a viable approach for small-scale power generation devices.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.2514/6.2007-4767DOIArticle
https://resolver.caltech.edu/CaltechAUTHORS:20090923-143136060Related ItemJournal Article
ORCID:
AuthorORCID
Haile, Sossina M.0000-0002-5293-6252
Additional Information:© 2007 by the American Institute of Aeronautics and Astronautics, Inc.
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AIAA Paper2007-4767
Record Number:CaltechAUTHORS:20200429-081654031
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20200429-081654031
Official Citation:A Thermally Self-Sustaining Miniature Solid Oxide Fuel Cell. Jeongmin Ahn, Paul Ronney, Zongping Shao, and Sossina Haile. 5th International Energy Conversion Engineering Conference and Exhibit (IECEC). June 2007; doi: 10.2514/6.2007-4767
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:102897
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:29 Apr 2020 16:14
Last Modified:29 Apr 2020 16:14

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