TY - GEN
T1 - NUMERICAL ANALYSIS OF HEAT/MASS TRANSFER AND ELECTROCHEMICAL REACTION IN AN ANODE-SUPPORTED FLAT-TUBE SOLID OXIDE FUEL CELL
AU - Suzuki, Masayuki
AU - Shikazono, Naoki
AU - Fukagata, Koji
AU - Kasagi, Nobuhide
N1 - Funding Information:
We would like to thank Professor Yuji Suzuki at the University of Tokyo for beneficial discussion and advice. This research was supported through The 21st Century COE Program, “Mechanical Systems Innovation”, by the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT).
Publisher Copyright:
© 2006 by ASME.
PY - 2006
Y1 - 2006
N2 - 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.
AB - 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.
KW - Electrochemical reaction
KW - Heat and mass transfer
KW - Modeling
KW - Simulation
KW - Solid oxide fuel cell
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U2 - 10.1115/FUELCELL2006-97112
DO - 10.1115/FUELCELL2006-97112
M3 - Conference contribution
AN - SCOPUS:85148248212
T3 - ASME 2006 4th International Conference on Fuel Cell Science, Engineering and Technology, FUELCELL 2006
SP - 595
EP - 603
BT - ASME 2006 4th International Conference on Fuel Cell Science, Engineering and Technology, FUELCELL 2006
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2006 4th International Conference on Fuel Cell Science, Engineering and Technology, FUELCELL 2006
Y2 - 19 June 2006 through 21 June 2006
ER -
