Gas Turbine Power Augmentation By USING TURBINE INLET Air COOLING

Abstract

Combustion gas turbines are constant-volume engines for which shaft horsepower is proportional to the combustion air mass flow, their output and efficiency decrease as the ambient temperature increases. The present study investigates the technical and economical feasibility of using turbine inlet air cooling in the performance of gas turbine in Khartoum area. The study results indicated that refrigerated cooling appear as the technically feasible, it can give the maximum benefits of turbine inlet cooling since it achieves the lowest inlet air temperature. While wetted media evaporative cooling is economically feasible, it is passive option that can utilize readily available potable water with lowest parasitic load. Based on the study results, it is recommended that, for Khartoum area as hot and dry region with availability of water, wetted media evaporative cooling can be used to improve gas turbine performance.