Performance Analysis of Fogging Cooled Gas Turbine With Regeneration and Reheat Under Different Climatic Conditions

One of the most efficient power plants in past decades is the gas turbine. Significant studies have been conducted on the effects of various design and operation parameters on gas turbine performance. However, it is still a challenge to find the optimal operating parameters for the best performance. One of the important parameters is the climate at which the gas turbine operates. The current study is on the performance of gas turbine with fog cooling, focusing on the effect of inlet air humidity and ambient temperature. The overall efficiency will be altered through inlet fog cooling and regenerative heating. Other components such as reheating are accompanied. The fog cooling is also compared to the chiller inlet cooling, in which the performance of coefficient (COP) varies with temperature difference. The analysis is conducted by using Aspen Plus software. The results indicate that a combination of fog cooling and regeneration as well as reheating can substantially improve the system thermal efficiency. Compared to the system with only fog cooling, the efficiency increases by 24.5 % when both regeneration and reheat systems are combined to the fogging cooled system.