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

Tsung Leo Jiang, Ming Hong Chen

研究成果: Article同行評審

71 引文 斯高帕斯(Scopus)

摘要

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.

原文English
頁(從 - 到)8223-8234
頁數12
期刊International Journal of Hydrogen Energy
34
發行號19
DOIs
出版狀態Published - 2009 10月

All Science Journal Classification (ASJC) codes

  • 可再生能源、永續發展與環境
  • 燃料技術
  • 凝聚態物理學
  • 能源工程與電力技術

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