Thermodynamic Performance Evaluation of Gas Turbine Based on Tri-generation System

Thermodynamic analysis can be perfect tool for identifying the ways for improving the efficiency of fuel use, and determining the best configuration and equipment size for a Tri-generation plant. In this paper thermodynamic performance evaluation of gas turbine based on tri-generation system has been carried out. The operating parameter at inlet and outlet of each components involved in tri-generation system are determined. By using engineering equation solver (EES) parameters like enthalpy, entropy, exergy; etc are determined. The system performance parameters (first law, second law efficiency and exergy) are estimated with the help of these parameters. Parametric study has been done to investigate the effects of overall pressure ratio, turbine inlet temperature, and inlet air temperature on exergy destruction, first law efficiency, electrical to thermal energy ratio and second law efficiency of the components and overall system. The thermodynamic analysis shows the exergy destruction in combustion chamber and HRSG is significantly affected by the pressure ratio and TIT.