The aim of this work is to investigate the performance of internal reforming solid oxide fuel cell (IRSOFC) and gas turbine (GT) combined cycles. A mathematical model of the IRSOFC steady-state operation was presented in Part I of this work coupled to the thermodynamic analysis of a number of proposed IRSOFC-GT combined cycles, taking into account the influence of several technological constraints. In the second part of this work, both an exergy and a thermoeconomic analysis of the proposed cycles have been carried out using the TEMP code developed by the author. A suitable equation for IRSOFC cost evaluation based on cell geometry and performance has been proposed and employed to evaluate the electricity generation cost of the proposed combined systems. The results are presented and the influence of several parameters is discussed: external reformer operating conditions, fuel-to-air ratio, cell current density, compressor pressure ratio, etc. Diagrams proposed by the author for cost versus efficiency, cost versus specific work, and cost versus system pressure are also presented and discussed.

Issue Section:
Gas Turbines: Cycle Innovations, and Combustion and Fuels
Keywords:
gas turbines, solid oxide fuel cells, power generation economics, costing, thermodynamics, pressure, fuel, electric properties, engineering computing
Topics:
Combined cycles, Exergy, Fuels, Gas turbines, Pressure, Solid oxide fuel cells, Thermoeconomics, Compressors
1.
Massardo
,
A. F.
, and
Lubelli
,
F.
,
2000
, “
Internal Reforming Solid Oxide Fuel Cell—Gas Turbine Combined Cycles (IRSOFC-GT).—Part I: Cell Model and Cycle Thermodynamic Analysis
,”
ASME J. Eng. Gas Turbines Power
,
122
, pp.
27
–
35
.
2.
Agazzani, A., Massardo, A. F., and Satta, A., 1995, “Thermoeconomic Analysis of Complex Steam Plants,” ASME Paper No. 95-CPT-038.
3.
Agazzani
,
A.
, and
Massardo
,
A. F.
,
1997
, “
A Tool for Thermoeconomic Analysis and Optimization of Gas, Steam and Combined Plants
,”
ASME J. Eng. Gas Turbines Power
,
119
, pp.
885
–
892
.
4.
Agazzani
,
A.
,
Frangopoulos
,
C.
, and
Massardo
,
A. F.
,
1998
, “
Environmental Influence on the Thermoeconomic Optimization of a Combined Plant With Nox Abatement
,”
ASME J. Eng. Gas Turbines Power
,
120
, pp.
557
–
565
.
5.
Massardo
,
A. F.
, and
Scialo
,
M.
,
2000
, “
Thermoeconomic Analysis of Gas Turbine Based Cycles
,”
ASME J. Eng. Gas Turbines Power
,
122
, pp.
664
–
671
.
6.
Traverso
,
A.
, and
Massardo
,
A. F.
,
2002
, “
Thermoeconomic Analysis of Mixed Gas-Steam Cycles
,”
Appl. Therm. Eng.
,
22
, pp.
1
–
21
.
7.
Itoh, I., Mori, M., Mori, N., and Abe, T., 1994, “Production Cost Estimation of Solid Oxide Fuel Cells,” J. Power Sources, 49.
8.
Krist, K., Wright, D., Romeo, C., and Chen, T. P., 1996, “Cost Projections for Solid Oxide Fuel Cell Systems,” 1996 Fuel Cell Seminary, Orlando FL, Nov., pp. 497–500.
9.
Stephenson, D., and Ritchey, I., 1997, “Parametric Study of Fuel Cell Gas Turbine Combined Cycle Performance” ASME Paper No. 97-GT-340.
10.
Costamagna, P., 1998, “private communication,” Stanford University, Stanford, CA.
11.
Hoffman M., 1999, “private communication,” University of California, Davis, CA.
12.
Pietsch T., 1998, “private communication,” Rolls Royce Eng., Advanced Centre, Derby, UK.
13.
Massardo, A. F., and Magistri L., 1999, “Thermoeconomic and Environomic Analysis of SOFC Combined Cycles,” DIMSET TN 1/99, University of Genoa (in Italian).
14.
Massardo, A., Santarelli, M., and Borchiellini, R., “Carbon Exergy Tax (CET): Impact on Conventional Energy Systems Design and Its Contribution to Advanced Systems Utilisation,” ECOS 2000, Twentee, NL, pp. 139–156.
15.
Borchiellini, R., Massardo, A. F., and Santarclli, M., 1999, “Carbon Tax vs. CO2 Effects on Environomic Analysis of Existing Power Plants,” Proceedings ECOS ’99, June 8–10, Tokyo, pp. 287–293.
Copyright © 2003
 by ASME
You do not currently have access to this content.