The thermal efficiency of a 125 kW simple-cycle gas turbine for biogas power generation was estimated, using a computer code developed for simple-cycle gas turbines. The computer code can predict expected values for the thermal efficiency and specific work along with the expected temperatures and pressures at various stages in the gas turbine. For the 125 kW Solar Gas Turbine (Titan series), the projected thermal efficiency is about 14%. This paper additionally presents a sensitivity analysis oo the operating condition and design parameter which had the greatest impacts on the thermal efficiency. These results will assist the California Energy Commission in determining the type of combustion device most suitable for biogas power generation.

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