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High Power Density Solid Oxide Fuel Cells for Auxiliary Power Unit Applications

[+] Author Affiliations
Robert Draper

Siemens Westinghouse Power Corporation, Pittsburg, PA

Gianfranco DiGiuseppe

Siemens Westinghouse Power Corporation, Monroeville, PA

Paper No. FUELCELL2005-74177, pp. 289-294; 6 pages
  • ASME 2005 3rd International Conference on Fuel Cell Science, Engineering and Technology
  • 3rd International Conference on Fuel Cell Science, Engineering and Technology
  • Ypsilanti, Michigan, USA, May 23–25, 2005
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-3764-5 | eISBN: 0-7918-3757-2
  • Copyright © 2005 by ASME


High Power Density (HPD) Solid Oxide Fuel Cells (SOFC) possess the attributes of reduced ohmic polarization, and greater active area per unit volume, relative to current state-of-the-art circular cylindrical SOFCs’. Several variations of the basic “flattened cylinder” HPD geometry are being analyzed and tested. For example, the HPD10 cell enjoys a 58% gain in power density over current practice. In this variation ten air channels are separated by nine ribs that connect the flat faces of the cell. Other cell geometries and advanced cell materials are under consideration and have the potential for further improvement in power density. This makes the application of HPD SOFCs’ to compact Auxiliary Power Units (APU) attractive. This paper reviews geometric and performance characteristics for HPD cells and presents a conceptual design for an APU of 5 kW net output.

Copyright © 2005 by ASME



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