Integrated gasification fuel cell (IGFC) systems combining coal gasification and solid oxide fuel cells (SOFC) are promising for highly efficient and environmentally friendly utilization of coal for power production. Most IGFC system analyses performed to-date have used nondimensional thermodynamic SOFC models that do not resolve the intrinsic constraints of SOFC operation. In this work a quasi-two-dimensional (2D) finite volume model for planar SOFC is developed and verified using literature data. Special attention is paid to making the model capable of supporting recent SOFC technology improvements, including the use of anode-supported configurations, metallic interconnects, and reduced polarization losses. Activation polarization parameters previously used for high temperature electrolyte-supported SOFC result in cell performance that is much poorer than that observed for modern intermediate temperature anode-supported configurations; thus, a sensitivity analysis was conducted to identify appropriate parameters for modern SOFC modeling. Model results are shown for SOFC operation on humidified H2 and CH4 containing syngas, under coflow and counterflow configurations; detailed internal profiles of species mole fractions, temperature, current density, and electrochemical performance are obtained. The effects of performance, fuel composition, and flow configuration of SOFC performance and thermal profiles are evaluated, and the implications of these results for system design and analysis are discussed. The model can be implemented not only as a stand-alone SOFC analysis tool, but also a subroutine that can communicate and cooperate with chemical flow sheet software seamlessly for convenient IGFC system analysis.

1.
Kuchonthara
,
P.
,
Bhattacharya
,
S.
, and
Tsutsumi
,
A.
, 2005, “
Combination of Thermo-Chemical Recuperative Coal Gasification Cycle and Fuel Cell for Power Generation
,”
Fuel
0016-2361,
84
(
7–8
), pp.
1019
1021
.
2.
Ghosh
,
S.
, and
De
,
S.
, 2006, “
Energy Analysis of a Cogeneration Plant Using Coal Gasification and Solid Oxide Fuel Cell
,”
Energy
0360-5442,
31
(
2–3
), pp.
345
363
.
3.
Rao
,
A.
,
Verma
,
A.
, and
Samuelsen
,
G.
, 2005, “
Engineering and Economic Analyses of a Coal-Fueled Solid Oxide Fuel Cell Hybrid Power Plant
,”
ASME
Paper No. GT2005-68762.
4.
Verma
,
A.
,
Rao
,
A. D.
, and
Samuelsen
,
G. S.
, 2006, “
Sensitivity Analysis of a Vision 21 Coal Based Zero Emission Power Plant
,”
J. Power Sources
0378-7753,
158
(
1
), pp.
417
427
.
5.
Braun
,
R.
, 2002, “
Optimal Design and Operation of Solid Oxide Fuel Cell System for Small Scale Stationary Applications
,” Ph.D. thesis, University of Wisconsin-Madison, Madison, WI.
6.
Recknagle
,
K. P.
,
Williford
,
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
(
1
), pp.
109
114
.
7.
Aguiar
,
P.
,
Adjiman
,
C. S.
, and
Brandon
,
N. P.
, 2004, “
Anode-Supported Intermediate Temperature Direct Internal Reforming Solid Oxide Fuel Cell. I: Model-Based Steady-State Performance
,”
J. Power Sources
0378-7753,
138
(
1–2
), pp.
120
136
.
8.
Costamagna
,
P.
,
Selimovic
,
A.
,
Borghi
,
M. D.
, and
Agnew
,
G.
, 2004, “
Electrochemical Model of the Integrated Planar Solid Oxide Fuel Cell (IP-SOFC)
,”
Chem. Eng. J.
0300-9467,
102
(
1
), pp.
61
69
.
9.
Mueller
,
F.
,
Brouwer
,
J.
, and
Jabbari
,
F.
, 2006, “
Dynamic Simulation of an Integrated Solid Oxide Fuel Cell System Including Current-Based Fuel Flow Control
,”
ASME J. Fuel Cell Sci. Technol.
1550-624X,
3
, pp.
144
154
.
10.
Selimovic
,
A.
, 2002, “
Modeling of Solid Oxide Fuel Cells Applied to the Analysis of Integrated Systems With Gas Turbines
,” Ph.D. thesis, Lund University, Sweden.
11.
Campanari
,
S.
, and
Iora
,
P.
, 2004, “
Definition and Sensitivity Analysis of a Finite Volume SOFC Model for a Tubular Cell Geometry
,”
J. Power Sources
0378-7753,
132
(
1–2
), pp.
113
126
.
12.
Campanari
,
S.
, and
Iora
,
P.
, 2005, “
Comparison of Finite Volume SOFC Models for the Simulation of a Planar Cell Geometry
,”
Fuel Cells
0532-7822,
5
(
1
), pp.
34
51
.
13.
Hernández-Pacheco
,
E.
,
Mann
,
M. D.
,
Hutton
,
P. N.
,
Singh
,
D.
, and
Martin
,
K. E.
, 2005, “
A Cell-Level Model for a Solid Oxide Fuel Cell Operated With Syngas From a Gasification Process
,”
Int. J. Hydrogen Energy
0360-3199,
30
(
11
), pp.
1221
1233
.
14.
Li
,
P. W.
, and
Chyu
,
M. K.
, 2005, “
Electrochemical and Transport Phenomena in Solid Oxide Fuel Cells
,”
ASME J. Heat Transfer
0022-1481,
127
(
12
), pp.
1344
1362
.
15.
Larminie
,
J.
, and
Dicks
,
A.
, 2003,
Fuel Cell Systems Explained
,
2nd ed.
,
Wiley
,
West Sussex, England
.
16.
Chase
,
M.
, 1986,
JANAF Thermochemical Tables
,
3rd ed.
,
American Chemical Society
,
Washington, DC
.
17.
Noren
,
D. A.
, and
Hoffman
,
M. A.
, 2005, “
Clarifying the Butler–Volmer Equation and Related Approximations for Calculating Activation Losses in Solid Oxide Fuel Cell Models
,”
J. Power Sources
0378-7753,
152
, pp.
175
181
.
18.
Achenbach
,
E.
, 1996,
SOFC Stack Modeling, Final Report of Activity A2, Annex II: Modeling and Evaluation of Advanced Solid Oxide Fuel Cells
,
International Energy Agency
,
Jüelich, Germany
.
19.
ThyssenKrupp VDM
, 2008, “
Crofer 22 APU, Material Data Sheet No. 4046
,” Jun. 2008 ed.
20.
Chan
,
S. H.
, and
Xia
,
Z. T.
, 2001, “
Anode Micro Model of Solid Oxide Fuel Cell
,”
J. Electrochem. Soc.
0013-4651,
148
(
4
), pp.
A388
A394
.
21.
Reid
,
R.
,
Prausnitz
,
J.
, and
Poling
,
B.
, 1987,
The Properties of Gases and Liquids
,
4th ed.
,
McGraw-Hill
,
New York
.
22.
Perry
,
R.
, and
Green
,
W.
, 1997,
Perry’s Chemical Engineer’s Handbook
,
7th ed.
,
McGraw-Hill
,
New York
.
23.
Achenbach
,
E.
, 1994, “
Three-Dimensional and Time-Dependent Simulation of a Planar Solid Oxide Fuel Cell Stack
,”
J. Power Sources
0378-7753,
49
(
1–3
), pp.
333
348
.
24.
Patankar
,
S.
, 1980,
Numerical Heat Transfer and Fluid Flow
,
1st ed.
,
Hemisphere
,
Washington, DC
.
25.
Surdoval
,
W.
, 2007, “
The U. S. Department of Energy Fossil Energy Fuel Cell Program Solid State Energy Conversion Alliance Goals and Challenges
,”
Eighth Annual SECA Workshop
, San Antonio, TX.
26.
Shaffer
,
S.
, 2008, “
Delphi SOFC Development Update
,”
Ninth Annual SECA Workshop
, Pittsburgh, PA.
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