Performance analysis of planar-type unit SOFC considering current and temperature distributions

Mitsunori Iwata, Takeshi Hikosaka, Makoto Morita, Toru Iwanari, Kohei Ito, Kazuo Onda, Yoshimi Esaki, Yoshinori Sakaki, Susumu Nagata

研究成果: ジャーナルへの寄稿学術誌査読

230 被引用数 (Scopus)

抄録

The solid oxide fuel cell (SOFC) is expected to be a candidate for distributed power sources in the next generation, due to its high efficiency, high-temperature waste heat utilization and low emission of pollutants to the environment. In this study, a quasi-two- (co- and counter-flow) and three- (cross-flow) dimensional simulation program for planar-type SOFC was made considering mass, charge and heat balances along the flow directions and perpendicular to the electrolyte membrane, in order to obtain temperature and current density distributions along the flow direction. Numerical results from this simulation with adiabatic boundary conditions show that the temperature increases along the flow direction in the co-flow case and the temperature profile has a maximum near the fuel inlet in the counter-flow case. The effects of the gas re-circulation ratio, operating pressure and physical properties on current and temperature distributions were also studied. The temperature distribution is uniform irrespective of flow type under the boundary condition of radiative exchange between the outer interconnector and the electric furnace surface with a realistic view factor. Temperature and current density profiles are discussed considering the Nernst potential and overvoltage changes along the flow direction.

本文言語英語
ページ(範囲)297-308
ページ数12
ジャーナルSolid State Ionics
132
3
DOI
出版ステータス出版済み - 7月 2 2000
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学

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