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ABSTRACT
In order to contribute to the development of a steam turbine locally, optimum performance parameters for a ten (10) megawatt steam turbine were analyzed for power generation in Iesus Hominum Salvator (IHS) community. Total power consumption of electrical appliances was estimated, from which future capacity projection was done for the design.
A two-stage turbine with re-heater and regenerator Rankine cycle was adopted for the analysis. MATLAB code which is based on certain governing equations for estimating performance parameters based on the operating temperatures and pressures was developed. The effects of operating pressures on performance parameters were simulated and used to determine the optimum operating parameters for efficiency, steam quality and flow rate respectively using Response Surface Methodology (RSM).
Results from investigation shows that efficiency and steam quality tend to increase as re-heat pressure increases, while the volume of steam required to generate 10MW decreases. Efficiency of steam tend to increase with feed water pressures while the steam quality is unaffected. Efficiency of steam tend to decrease with the steam pressure at the turbine exit while the quality of steam tends to increase. Operating pressures for optimum efficiency, flow rate and steam quality obtained using RSM are 0.82MPa, 0.85MPa and 0.47MPa while efficiency, flow rate and steam quality are 42.2%, 2.8m3/s and 90% respectively. Optimum operating parameters for efficiency and economy were successfully determined for the designed of 10MW steam turbine.
