A comparative assessment of gas turbine options for power generation was carried out in this paper. The existing Omotosho power station in Nigeria which is based on the simple cycle and its retrofitted modified cycles were used for the investigation. The thermal efficiency, specific fuel consumption and power output are important performance criteria used in comparing cycles. DWSIM, a multiplatform open-cape software was used in carrying out the simulations for the simple circle and the integrated intercooler, reheater and regenerative cycles. The percentage changes in performance of these cycles over the simple cycle was evaluated and found to exhibit better performances in terms of thermal efficiency, specific fuel consumption and power output than the conventional simple cycle achieving up to 68% increment in some cases.
Key words: Gas turbine, Simple Cycle, Intercooler, Reheater, Regenerator, Efficiency
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