Abstract

The purpose of current study is to analyze the effect of inlet steam temperature coming from the boiler on thermoeconomic performance of a steam turbine used in a coal fired thermal power plant. Second law of thermodynamics is used to develop the thermoeconomic model for the turbine. Analyses based on exergetic and exergoeconomic criteria are done for the turbine used in a 210 MW power plant. Methodology is explained with the help of an example. Effect of inlet steam temperature on the exergetic efficiency of the turbine, unit product cost of turbine and unit product boiler has been shown. Optimization has been done for the turbine as a trade off between the unit product cost of inlet steam from the boiler and unit product cost of the turbine.

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