Thermal-stress analyses of an operating planar solid oxide fuel cell with the bonded compliant seal design

Tsung Leo Jiang, Ming Hong Chen

Research output: Contribution to journalArticlepeer-review

66 Citations (Scopus)

Abstract

A thermo-electrochemical-structure model has been proposed in the present work to investigate the thermal behavior and the thermal-stress of a solid oxide fuel cell (SOFC) with the bonded compliant seal (BCS) design. A comprehensive numerical simulation model, employing the finite-volume approach, has been developed for the three-dimensional, multi-component, electrochemically, and chemically reacting flow of a single planar SOFC unit cell. The cell temperature predicted by the finite-volume model is imported to a finite-element model to estimate the thermal-stress with the BCS design. Effects of the cell voltage and the temperature non-uniformity on the thermal-stress of the SOFC have been investigated. Numerical results obtained from the present study show that an assumed isothermal SOFC configuration leads to an underestimate of the thermal-stress by 28% for the cell and 37% for the metal frame in comparison with those in practical operating conditions. Two factors are identified to be responsible for the thermal-stress. One is the residual stress, and the other is the temperature gradient. The dominant factor for the thermal-stress depends on the location and the cell voltage.

Original languageEnglish
Pages (from-to)8223-8234
Number of pages12
JournalInternational Journal of Hydrogen Energy
Volume34
Issue number19
DOIs
Publication statusPublished - 2009 Oct 1

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Fingerprint Dive into the research topics of 'Thermal-stress analyses of an operating planar solid oxide fuel cell with the bonded compliant seal design'. Together they form a unique fingerprint.

Cite this