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The use of biomass waste as a clean and renewable fuel source is an attractive alternative to the use of fossil fuels. Biomass fuel originates above ground and does not release additional carbon via combustion. A biomass integrated gasification system for a combined cycle (BIGCC) power plant is one of the most advantageous ways of processing raw biomass into a useful gaseous fuel source, especially for power production. The gasification process transforms raw biomass products into producer or synthetic gas, which is then cleaned and fed as gaseous fuel into the gas turbine. In this study, simulations are performed upon a small and medium sized combined cycle power plant. The effects of feeding different fuel heating value types, effects of performance due to psychometric conditions, and effects of power augmentation, are studied in particular to compare the forecasted results in order to establish the advantages of using a BIGCC system with the above effects. Commercial simulation software from General Electric�s Enter GateCycle and Thermo Flow�s Thermoflow Release 12, are used to simulate the combined cycle power plant. An initial case of different fuel lower heating values are conducted and compared. Benchmark cases are then run as a standard for reference and comparison. Representative psychometric conditions are then simulated and lastly, power augmentation simulations are run using separate techniques of gas turbine compressor inlet mist cooling and gas turbine combustion chamber steam injection.
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