Numerical analysis of heat/mass transfer and electrochemical reaction in an anode-supported flat-tube solid oxide fuel cell

Masayuki Suzuki, Naoki Shikazono, Koji Fukagata, Nobuhide Kasagi

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

Three-dimensional heat and mass transfer and electrochemical reaction in an anode-supported flat-tube solid oxide fuel cell (FT-SOFC) are studied. Transport and reaction phenomena mainly change in the streamwise direction. Exceptionally, hydrogen and water vapor have large concentration gradients also in the cross section perpendicular to the flow direction, because of the insufficient mass diffusion in the porous anode. Based on these results, we develop a simplified one-dimensional cell model. The distributions of temperature, current, and overpotential predicted by this model show good agreement with those obtained by the full three-dimensional simulation. We also investigate the effects of pore size, porosity and configuration of the anode on the cell performance. Extensive parametric studies reveal that, for a fixed three-phase boundary (TPB) length, rough material grains are preferable to obtain higher output voltage. In addition, when the cell has a thin anode with narrow ribs, drastic increase in the volumetric power density can be achieved with small voltage drop.

本文言語English
ホスト出版物のタイトルProceedings of 4th International ASME Conference on Fuel Cell Science, Engineering and Technology, FUELCELL2006
出版ステータスPublished - 2006 12 1
外部発表はい
イベント4th International ASME Conference on Fuel Cell Science, Engineering and Technology, FUELCELL2006 - Irvine, CA, United States
継続期間: 2006 6 192006 6 21

出版物シリーズ

名前Proceedings of 4th International ASME Conference on Fuel Cell Science, Engineering and Technology, FUELCELL2006
2006

Other

Other4th International ASME Conference on Fuel Cell Science, Engineering and Technology, FUELCELL2006
CountryUnited States
CityIrvine, CA
Period06/6/1906/6/21

ASJC Scopus subject areas

  • Engineering(all)

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