We report a model for coupled temperature and current distributions along the single channel in planar solid-oxide fuel cell stack. Approximate analytical solution to model equations is derived; the solution predicts that air and stack temperatures are close to each other and linearly increase with the distance along the channel. Maximal temperature at the channel outlet is proportional to the average stack current and inversely proportional to the air flow velocity. This means that temperature oscillations due to variable load can be compensated for by the respective variation in air flow velocity.
Issue Section:
Research Papers
1.
Larrain
, D.
, Van Herle
, J.
, and Favrat
, D.
, 2006, “Simulation of SOFC Stack and Repeat Elements Including Interconnect Degradation and Anode Reoxidation Risk
,” J. Power Sources
0378-7753, 161
, pp. 392
–403
.2.
Eikerling
, M.
, Kornyshev
, A. A.
, and Kulikovsky
, A. A.
, 2007, “Physical Modeling of Fuel Cells and Their Components
,” Encyclopedia of Electrochemistry
, Vol. 5
, A. J.
Bard
, M.
Stratmann
, D.
Macdonald
, and P.
Schmuki
, eds. Wiley
, New York
, Sec. 8.2.3.
Recknagle
, K. P.
, Wilford
, R. E.
, Chick
, L. A.
, Rector
, D. R.
, and Khaleel
, M. A.
, 2003, “Three-Dimensional Thermo-Fluid Electrochemical Modeling of Planar SOFC Stacks
,” J. Power Sources
0378-7753, 113
, pp. 109
–114
.4.
Iora
, P.
, Aguiar
, P.
, Adjiman
, C. S.
, and Brandon
, N. P.
, 2005, “Comparison of Two IT DIR-SOFC Models: Impact of Variable Thermodynamic, Physical, and Fow Properties. Steady-State and Dynamic Analysis
,” Chem. Eng. Sci.
0009-2509, 60
, pp. 2963
–2795
.5.
Ji
, Y.
, Yuan
, K.
, Chung
, J. N.
, and Chen
, Y. -C.
, 2006, “Effects of Transport Scale on Heat/Mass Transfer and Performance Optimization for Solid Oxide Fuel Cells
,” J. Power Sources
0378-7753, 161
, pp. 380
–391
.6.
Zhu
, H.
, Kee
, R. J.
, Janardhanan
, V. M.
, Deutschmann
, O.
, and Goodwin
, D.
, 2005, “Modeling Elementary Heterogeneous Chemistry and Electrochemistry in Solid Oxide Fuel Cells
,” J. Electrochem. Soc.
0013-4651, 152
, pp. A2427
–A2440
.7.
Haberman
, B. A.
, and Young
, J. B.
, 2006, “Diffusion and Chemical Reaction in the Porous Structures of Solid Oxide Fuel Cells
,”ASME J. Fuel Cell Sci. Technol.
1550-624X, 3
, p. 312
.8.
Haberman
, B. A.
, and Young
, J. B.
, 2005, “Numerical Investigation of the Air Flow Through a Bundle of IP-SOFC Modules
,” Int. J. Heat Mass Transfer
0017-9310, 48
, pp. 5475
–5478
.9.
Huang
, K.
, Hou
, P. Y.
, and Goodenough
, J. B.
, 2000, “Characterization of Iron-Based Alloy Interconnects for Reduced Temperature Solid Oxide Fuel Cells
,” Solid State Ionics
0167-2738, 129
, pp. 237
–250
.10.
Yakabe
, H.
, Ogiwara
, T.
, Hishinuma
, M.
, and Yasuda
, I.
, 2001, “3–D Model Calculation for Planar SOFC
,” J. Power Sources
0378-7753, 102
, pp. 144
–154
.11.
Inui
, Y.
, Ito
, N.
, Nakajima
, T.
, and Urata
, A.
, 2006, “Analytical Investigation on Cell Temperature Control Method of Planar Solid Oxide Fuel Cell
,” Energy Convers. Manage.
0196-8904, 47
, pp. 2319
–2328
.Copyright © 2010
by American Society of Mechanical Engineers
You do not currently have access to this content.
