Thermodynamics performance analysis of a Gas Turbine under Variable Ambient Temperatures: A case Study of South Tripoli Power Plant with Cycle Improvement Techniques

Abstract

This study investigates the effect of ambient air temperature on the performance of a gas turbine power plant based on real operational data from the South Tripoli Gas Power Plant. The analysis focuses on key performance parameters including net power output, thermal efficiency, and back work ratio under different seasonal conditions. A thermodynamic evaluation of the real cycle was conducted, followed by a comparative analysis with two enhancement techniques: regeneration and the fully improved cycle (intercooling, reheat, and regeneration), while maintaining the same operating conditions to ensure a fair comparison. Concludes that advanced cycle modifications are effective in enhancing gas turbine performance, particularly in hot-climate regions such as Libya.