Effects of geometrical and mechanical properties of various components on stresses of the seals in SOFCS

W. N. Liu, B. J. Koeppel, X. Sun, M. A. Khaleel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

In this paper, numerical modeling was used to understand the effects of the geometry and mechanical properties of various components in SOFCs on the magnitude and distribution of stresses in the stack during operating and cooling processes. The results of these modeling analyses will help stack designers reduce high stresses in the seals of the stack so that structural failures are prevented and high stack mechanical reliability is achieved to meet technical targets. In general, it was found that the load carrying capacity of the cathode contact layer was advantageous for reducing the transmitted loads on the cell perimeter seal under operating environments of SOFCs, but the amount of reduction depends upon the relative stiffness values of the cell, interconnect, porous media, and support structures. Comparison to a frictionless sliding interface, a fully bonded interface resulted in 30-50% less transmitted load through the perimeter seal, with the greater reductions due to stiffer contact/media/interconnect structures. These results demonstrate that the mechanical contribution of the contact layer can be substantial and warrant design consideration.

Original languageEnglish
Title of host publicationCeramic Engineering and Science Proceedings
Pages53-62
Number of pages10
Volume31
Edition4
Publication statusPublished - 1 Dec 2010
Externally publishedYes
EventAdvances in Solid Oxide Fuel Cells VI - 34th International Conference on Advanced Ceramics and Composites, ICACC - Daytona Beach, FL, United States
Duration: 24 Jan 201029 Jan 2010

Other

OtherAdvances in Solid Oxide Fuel Cells VI - 34th International Conference on Advanced Ceramics and Composites, ICACC
CountryUnited States
CityDaytona Beach, FL
Period24/1/1029/1/10

Fingerprint

Seals
Solid oxide fuel cells (SOFC)
Mechanical properties
Load limits
Porous materials
Cathodes
Stiffness
Cooling
Geometry

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Liu, W. N., Koeppel, B. J., Sun, X., & Khaleel, M. A. (2010). Effects of geometrical and mechanical properties of various components on stresses of the seals in SOFCS. In Ceramic Engineering and Science Proceedings (4 ed., Vol. 31, pp. 53-62)

Effects of geometrical and mechanical properties of various components on stresses of the seals in SOFCS. / Liu, W. N.; Koeppel, B. J.; Sun, X.; Khaleel, M. A.

Ceramic Engineering and Science Proceedings. Vol. 31 4. ed. 2010. p. 53-62.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Liu, WN, Koeppel, BJ, Sun, X & Khaleel, MA 2010, Effects of geometrical and mechanical properties of various components on stresses of the seals in SOFCS. in Ceramic Engineering and Science Proceedings. 4 edn, vol. 31, pp. 53-62, Advances in Solid Oxide Fuel Cells VI - 34th International Conference on Advanced Ceramics and Composites, ICACC, Daytona Beach, FL, United States, 24/1/10.
Liu WN, Koeppel BJ, Sun X, Khaleel MA. Effects of geometrical and mechanical properties of various components on stresses of the seals in SOFCS. In Ceramic Engineering and Science Proceedings. 4 ed. Vol. 31. 2010. p. 53-62
Liu, W. N. ; Koeppel, B. J. ; Sun, X. ; Khaleel, M. A. / Effects of geometrical and mechanical properties of various components on stresses of the seals in SOFCS. Ceramic Engineering and Science Proceedings. Vol. 31 4. ed. 2010. pp. 53-62
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