Gas turbine inlet air temperature varies significantly in hot and cold conditions, making performance sensitivity to ambient conditions critical, while ensuring that blade life is not compromised. Therefore, understanding how compressor inlet temperature, specific fuel consumption, and blade surface temperature affect gas turbine performance and blade life while achieving power augmentation and maintaining blade durability. A numerical investigation was conducted using Engineering Equation Solver (EES), actual GT13E2-2005 operating data and standard thermodynamic properties to evaluate gas turbine performance and blade life. The simulation results were tabulated, and Microsoft Excel was used to plot performance and blade-life trends to identify ways to improve power output while extending blade life. The key findings show that the application of inlet cooling helps in mitigating blade degradation resulting from increased turbine inlet temperature, high pressure ratio and high specific fuel consumption, while improving power output, thermal efficiency and blade life. Results indicate that inlet cooling increases air density, which significantly improves blade life, plant efficiency and power output, and slightly reduces specific fuel consumption. The results justified the focal aspect of this research which was to prolong blade life and improve the power output without necessarily increasing fuel consumption (minimizing fuel usage) while using inlet cooling.

Christian C.E Odila, Ebigenibo G. Saturday, Celestine E. Ebieto, "Multiple-Objective Optimization of Gas Turbine Inlet Cooling Systems for Simultaneous Power Augmentation and Blade Life Preservation" International Journal of Scientific Research and Engineering Development, V9(5): Page(401-408) September - October 2026. ISSN: 2581-7175. www.ijsred.com. Published by Scientific and Academic Research Publishing.