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