Thermoeconomic Evaluation of Steam Turbines
Concepts of exergoeconomic audits and evaluation of steam turbines are presented. In the first part of the work, an analysis based on the first and second laws of thermodynamics is applied to a power plant. These methodologies allow the computation of exergy-cost and economic-cost of local products and fuels in each plant component The second part of the work consists of an evaluation and determination of the degree of entropy generation and power loss in a steam turbine stage, under the detection of specific malfunctions. t. As it is well known, steam turbines can develop intrinsic malfunctions such as roughness, seal and leak clearances, erosion, and sedimentation. The main objective of this work is to assess the exergy-cost due to the intrinsic malfunctions in a steam turbine stage. The case study is Ramin Ahvaz steam power plants is considered. Simulation is performed in THERMOFLOW environment.