Optimum Operational Pressure for a 55 MW Turbine Utilized in a Wet Steam Field

Abstract

The objective of this work is to calculate the optimum pressures for the technical operation of a 55 MW double cylinder turbine in a tandem configuration using mass and energy balance equations, accompanied by a technical economic study. The maximum dryness at the turbine outlet should be kept at 85% and the power generation maintained constant. The values of the various calculated steam pressures were 10, 9, 8 and 7 bar and 3.5, 3.2, 2.5 and 2.0 bar, for the high and low steam pressures respectively, while at the turbine outlet the pressure was kept constant at 0.075 bar. The most important results obtained showed that, the re were two pressures with the best performance: 9 bar and 3.2 of high and low steam pressure, respectively and 0.075 bar at the turbine outlet. Other relevant alternatives were also found.