This paper deals with the determination of the optimal configuration of two integrated systems for distributed energy generation, based on solid oxide fuel cells. Both systems are obtained starting from the Siemens CHP100 generator. The first system is obtained by recovering some of the heat flux available from the fuel cell to feed an organic Rankine cycle. The second system is obtained by installing the fuel cell generator instead of the combustion chamber of a micro-gas-turbine. The fuel cell produces about of electricity. The integrated systems allow to increase of about 30% the electricity production. Pinch analysis is then applied in order to analyze the theoretical improvements and to rearrange the location of the heat recovery devices, without modifying the temperature conditions of the main processes. The optimal structure, according to a thermodynamic criterion, is obtained and discussed.
1.
Singhal
, S. C.
, 2000, “Advances in Solid Oxide Fuel Cell Technology
,” Solid State Ionics
0167-2738, 135
, pp. 305
–313
.2.
Monanteras
, C. N.
, and Frangopoulos
, C. A.
, 1999, “Towards Synthesis Optimization of a Fuel-Cell Based Plant
,” Energy Convers. Manage.
0196-8904, 40
, pp. 1733
–1742
.3.
Wallmark
, C.
, and Alvfors
, P.
, 2002, “Design of Stationary PEFC System Configurations to Meet Heat and Power Demands
,” J. Power Sources
0378-7753, 106
, pp. 83
–92
.4.
Colella
, W. G.
, 2003, “Modelling Results for the Thermal Management Sub-System of a Combined Heat and Power, (CHP) Fuel Cell System, (FCS)
,” J. Power Sources
0378-7753, 118
, pp. 129
–149
5.
Palazzi
, F.
, Autissier
, N.
, Marechal
, F. M. A.
, and Favrat
, D.
, 2007, “A Methodology for Thermo-Economic Modeling and Optimization of Solid Oxide Fuel Cell Systems
,” Appl. Therm. Eng.
1359-4311, 27
, pp. 2703
–2712
.7.
Calì
, M.
, De Denedictis
, F.
, Leone
, P.
, Santarelli
, M.
, and Verda
, V.
, 2005, “Benchmark Characterization of a Tubular SOFC CHP Generator: Model Description and Experimental Validation
,” First European Fuel Cell Technology and Application Conference
, Rome, Italy
, Dec. 14–16.8.
Verda
, V.
, Calì
, M.
, and Orsello
G.
, 2007, “Solid Oxide Fuel Cell Systems for Distributed Power Generation and Cogeneration
,” Fourth Dubrovnik Conference on Sustainable Development of Energy, Water and Environment Systems
, Dubrovnik, Croatia
, Jun. 4–8.9.
Bessette
, N. F.
, II, Wepfer
, W. J.
, and Winnick
, J.
, 1995, “A Mathematical Model of a Solid Oxide Fuel Cell
,” J. Electrochem. Soc.
0013-4651, 142
, pp. 3792
–3800
.10.
Williams
, M. C.
, Strakey
, J. P.
, and Singhal
, S. C.
, 2004, “U.S. Distributed Generation Fuel Cell Program
,” J. Power Sources
0378-7753, 131
, pp. 79
–85
.11.
Bove
, R.
, Lunghi
, P.
, and Sammes
, N. M.
, 2005, “SOFC Mathematic Model for Systems Simulations. Part One: From a Micro-Detailed to Macro-Black-Box Model
,” Int. J. Hydrogen Energy
0360-3199, 30
(2
), pp. 181
–187
.12.
Costamagna
, P.
, and Honegger
, K.
1998, “Modeling of Solid Oxide Heat Exchanger Integrated Stacks and Simulation at High Fuel Utilization
,” J. Electrochem. Soc.
0013-4651, 145
(11
), pp. 3995
–4007
.13.
Massardo
, A. F.
, and Lubelli
, F.
, 2000, “Internal Reforming Solid Oxide Fuel Cell-Gas Turbine Combined Cycles, (IRSOFC-GT): Part A—Cell Model and Cycle Thermodynamic Analysis
,” ASME J. Eng. Gas Turbines Power
0742-4795, 122
, pp. 27
–35
.14.
Chan
, S. H.
, Ho
, H. K.
, and Tian
, Y.
, 2002, “Modeling of Simple Hybrid Solid Oxide Fuel Cell and Gas Turbine Power Plant
,” J. Power Sources
0378-7753, 109
, pp. 111
–120
.15.
Liu
, B. T.
, Chien
, K. H.
, and Wang
, S. K.
, 2004, “Effect of Working Fluids on Organic Rankine Cycle for Waste Heat Recovery
,” Energy
0360-5442, 29
, pp. 1207
–1217
.16.
Colonna
, P.
, and van der Stelt
, T. P.
, 2004, FLUIDPROP, A Program for the Estimation of Thermo Physical Properties of Fluids
, Energy Technology Section, Delft University of Technology, The Netherlands, http://www.FluidProp.comhttp://www.FluidProp.com.17.
Reini
, M.
, 2006, “Performance Evaluation of a Small Scale High Efficiency Cogeneration System
,” International Conference on Engineering Systems Design and Analysis ESDA 2006
, Torino, Italy
, Jul. 4–7, Paper No. ESDA2006-95650.18.
Linnhoff
, B.
, 1982, User Guide on Process Integration for the Efficient Use of Energy
, The Institution of Chemical Engineers
, Rugby, UK
.19.
Smith
, R.
, 2005, Chemical Process: Design and Integration
, Wiley
, Chichester
.20.
Bruno
, J. C.
, Valeo
, A.
, and Coronas
, A.
, 2005, “Performance Analysis of Combined Microgas Turbines and Gas Fired Water/LiBr Absorption Chillers With Post-Combustion
,” Appl. Therm. Eng.
1359-4311, 25
, pp. 87
–99
.21.
Micheli
, D.
, and Reini
, M.
, 2007, “On Bottoming a Micro Turbine With a Micro ORC Section: Part a) Preliminary Design of the ORC Expander
,” Proceedings of ECOS 2007
, Padua, Italy
, June 25–28, pp. 1025
–1033
.22.
NETL
, 2004, Fuel Cell Handbook
, 7th ed., US Department of Energy, National Energy Technology Laboratory
, Morgantown
.Copyright © 2008
by American Society of Mechanical Engineers
You do not currently have access to this content.
