Solid oxide fuel cell-gas turbine (SOFC-GT) hybrid systems are attractive for future power generation with ultra-low criteria pollutant and greenhouse gas emissions. One of the challenges for SOFC-GT systems is to sufficiently pre-heat incoming air before it enters the fuel cell cathode. An ejector for cathode exhaust recirculation has the benefits of reliability, low maintenance, and cost compared to either recuperators or cathode recirculation blowers, which may be also be used for air pre-heating. In this study, a dynamic Simulink model of an ejector for cathode exhaust recirculation to pre-heat incoming fuel cell air has been developed. The ejector is to be utilized within a 100 MW SOFC-GT dynamic model operating on coal syngas. A thorough theoretical development is presented. Results for the ejector were found to be in good agreement with those reported in literature.
References
1.
Jansen
, D.
, van der Laag
, P. C.
, Oudhuid
, A. B. J.
, and Ribberink
, J. S.
, 1994, “Prospects for Advanced Coal-Fuelled Fuel Cell Power Plants
,” J. Power Sources
, 49
, pp. 151
–165
. 2.
Kuchonthara
, P.
, Bhattacharya
, S.
, and Tsutsumi
, A.
, 2005, “Combination of Thermochemical Recuperative Coal Gasification Cycle and Fuel Cell for Power Generation
,” Fuel
, 84
, pp. 1019
–1021
. 3.
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
, 158
, pp. 417
–427
. 4.
Lobachyov
, K.
, and Richter
, H. J.
, 1996, “Combined Cycle Gas Turbine Power Plant With Coal Gasification and Solid Oxide Fuel Cell
,” J. Energy Resour. Tech.
, 118
, pp. 285
–292
. 5.
Winkler
, W.
, and Lorenz
, H.
, 2002, “The Design of Stationary and Mobile Solid Oxide Fuel Cell-Gas Turbine Systems
,” J. Power Sources
, 105
, pp. 222
–227
. 6.
Winkler
, W.
, 2006, “Fuel Cell Hybrids, Their Thermodynamics and Sustainable Development
,” J. Fuel Cell Sci. Tech.
, 3
, pp. 195
–201
. 7.
Winkler
, W.
, Nehter
, P.
, Williams
, M. C.
, Tucker
, D.
, and Gemmen
, R.
, 2006, “General Fuel Cell Hybrid Synergies and Hybrid System Testing Status
,” J. Power Sources
, 159
, pp. 656
–666
. 8.
Kurz
, R.
, 2005, “Parameter Optimization on Combined Gas Turbine-Fuel Cell Power Plants
,” J. Fuel Cell Sci. Tech.
, 2
, pp. 268
–273
. 9.
Park
, S. K.
, Oh
, K. S.
, and Kim
, T. S.
, 2007, “Analysis of the Design of a Pressurized SOFC Hybrid System Using a Fixed Gas Turbine Design
,” J. Power Sources
, 170
, pp. 130
–139
. 10.
Stiller
, C.
, Thorud
, B.
, Seljebo
, S.
, Mathisen
, O.
, Karoliussen
, H.
, and Bolland
, O.
, 2005, “Finite-Volume Modeling and Hybrid-Cycle Performance of Planar and Tubular Solid Oxide Fuel Cells
,” J. Power Sources
, 141
, pp. 227
–240
. 11.
Rao
, A. D.
, and Samuelsen
, G. S.
, 2002, “Analysis Strategies for Tubular Solid Oxide Fuel Cell Based Hybrid Systems
,” J. Eng. Gas Turbine Power
, 124
, pp. 503
–509
. 12.
Rao
, A. D.
, and Samuelsen
, G. S.
, 2003, “A Thermodynamic Analysis of Tubular Solid Oxide Fuel Cell Based Hybrid Systems
,” J. Eng. Gas Turbine Power
, 125
, pp. 59
–66
. 13.
Magistri
, L.
, Bozzolo
, M.
, Tarnowski
, O.
, Agnew
, G.
, and Massardo
, A. F.
, 2007, “Design and Off-Design Analysis of a MW Hybrid System Based on Rolls-Royce Integrated Planar Solid Oxide Fuel Cells
,” J. Eng. Gas Turbine Power
, 129
, pp. 792
–797
. 14.
Costamagna
, P.
, Magistri
, L.
, and Massardo
, A. F.
, 2001, “Design and Part-Load Performance of a Hybrid System Based on a Solid Oxide Fuel Cell Reactor and a Micro Gas Turbine
,” J. Power Sources
, 96
, pp. 352
–368
. 15.
Ferrari
, M. L.
, Traverso
, A.
, Magistri
, L.
, and Massardo
, A. F.
, 2005, “Influence of the Anodic Recirculation Transient Behavior of the SOFC Hybrid System Performance
,” J. Power Sources
, 149
, pp. 22
–32
. 16.
Ferrari
, M. L.
, Bernardi
, D.
, and Massardo
, A. F.
, 2006, “Design and Testing of Ejectors for High Temperature Fuel Cell Hybrid Systems
,” J. Fuel Cell Sci. Tech.
, 3
, pp. 284
–291
. 17.
Marsano
, F.
, Magistri
, L.
, and Massardo
, A. F.
, 2004, “Ejector Performance Influence on a Solid Oxide Fuel Cell Anodic Recirculation System
,” J. Power Sources
, 129
, pp. 216
–228
. 18.
Wächter
, C.
, Lunderstädt
, R.
, and Joos
, F.
, 2006, “Dynamic Model of a Pressurized SOFC/Gas Turbine Hybrid Power Plant for the Development of Control Concepts
,” J. Fuel Cell Sci. Tech.
, 3
, pp. 271
–279
. 19.
Roberts
, R. A.
, and Brouwer
, J.
, 2006, “Dynamic Simulation of a 220 kW Solid Oxide Fuel-Cell-Gas-Turbine Hybrid System: Modeled Performance Compared to Measured Results
,” J. Fuel Cell Sci. Tech.
, 3
, pp. 18
–25
. 20.
Roberts
, R. A.
, Brouwer
, J.
, Junker
, T.
, and Ghezel-Ayagh
, H.
, 2006, “Control Design of an Atmospheric Solid Oxide Fuel Cell/Gas Turbine Hybrid System: Variable Versus Fixed Speed Gas Turbine Operation
,” J. Power Sources
, 161
, pp. 484
–491
. 21.
Roberts
, R.
, Brouwer
, J.
, Liese
, E.
, and Gemmen
, R. S.
, 2006, “Dynamic Simulation of Carbonate Fuel Cell-Gas Turbine Hybrid Systems
,” J. Eng. Gas Turbines Power
, 128
, pp. 294
–301
. 22.
Mueller
, F.
, Brouwer
, J.
, Jabbari
, F.
, and Samuelsen
, S.
, 2006, “Dynamic Simulation of an Integrated Solid Oxide Fuel Cell System Including Current-Based Fuel Flow Control
,” J. Fuel Cell Sci. Tech.
, 3
, pp. 144
–154
. 23.
Kaneko
, T.
, Brouwer
, J.
, and Samuelsen
, G. S.
, 2006, “Power and Temperature Control of Fluctuating Biomass Gas Fueled Solid Oxide Fuel Cell and Micro Gas Turbine Hybrid System
,” J. Power Sources
, 160
, pp. 316
–325
. 24.
Mueller
, F.
, Jabbari
, F.
, Brouwer
, J.
, Roberts
, R.
, Junker
, T.
, and Ghezel-Ayagh
, H.
, 2007, “Control Design for a Bottoming Solid Oxide Fuel Cell Gas Turbine Hybrid System
,” J. Fuel Cell Sci. Tech.
, 4
, pp. 221
–230
. 25.
Traverso
, A.
, Massardo
, A.
, Roberts
, R. A.
, Brouwer
, J.
, and Samuelsen
, S.
, 2007, “Gas Turbine Assessment for Air Management of Pressurized SOFC/GT Hybrid Systems
,” J. Fuel Cell Sci. Tech.
, 4
, pp. 373
–383
. 26.
Mueller
, F.
, Jabbari
, F.
, Gaynor
, R.
, and Brouwer
, J.
, 2007, “Novel Solid Oxide Fuel Cell System Controller for Rapid Load Following
,” J. Power Sources
, 172
, pp. 308
–323
. 27.
Mueller
, F.
Brouwer
, J.
Kang
, S.
Kim
, H. S.
and Min
, K.
, 2007, “Quasi-Three-Dimensional Dynamic Model of a Proton Exchange Membrane Fuel Cell for System and Controls Development
,” J. Power Sources
, 163
, pp. 814
–829
. 28.
Mueller
, F.
, Gaynor
, R.
, Auld
, A. E.
, Brouwer
, J.
, Jabbari
, F.
, and Samuelsen
, G. S.
, 2008, “Synergistic Integration of a Gas Turbine and Solid Oxide Fuel Cell for Improved Transient Capability
,” J. Power Sources
, 176
, pp. 229
–239
. 29.
Keenan
, J. H.
, Neumann
, E. P.
, and Lustwerk
, F.
, 1950, “An Investigation of Ejector Design by Analysis and Experiment
,” J. Appl. Mech.
, 72
, pp. 299
–309
.30.
Sun
, D. W.
, Eames
, I. W.
, and Aphornratana
, S.
, 1996, “Evaluation of a Novel Combined Ejector-Absorption Cycle- I: Computer Simulation
,” Int. J. Refrig.
, 19
, pp. 172
–180
. 31.
White
, F. M.
, 2003, Fluid Mechanics
, McGraw–Hill
, New York
.32.
Chunnanond
, K.
, and Aphornratana
, S.
, 2004, “Ejectors: Applications in Refrigeration Technology
,” Renewable Sustainable Energy Rev.
, 8
, 129
–155
. 33.
Rogdakis
, E. D.
, and Alexis
, G. K.
, 2000, “Investigation of Ejector Design at Optimum Operating Condition
,” Energy Convers. Manage.
, 41
, pp. 1841
–1849
. 34.
Cengel
, Y. A.
, and Boles
, M. A.
, 2002, Thermodynamics: An Engineering Approach
, McGraw–Hill
, New York
.35.
Keenan
, J. H.
, and Neumann
, E. P.
, 1942, “A Simple Air Ejector
,” J. Appl. Mech.
, 9
, pp. A75
–A81
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