Gas Turbine Power Augmentation By Fogging Of Inlet Air.

LecturePg. 93-114Gas turbine output is a strong function of the ambient air temperature with power output dropping by 0.3 percent to 0.5 percent for every 1 F rise in ambient temperature. While this characteristic is inherent in any gas turbine, the effect can be severe on certain aeroderivative engines. This loss in output presents a significant problem to utilities, cogenerators, and independent power producers (IPPs) when electric demands are high during the hot months. In the petrochemical and process industry, the reduction in output of mechanical drive gas turbines curtails plant output. One way to counter this drop in output is to cool the inlet air. This paper briefly reviews cooling technologies and focuses on direct water fogging of the gas turbine inlet air. The paper provides a comprehensive overview of the state-of-the-art of inlet fogging systems and how they have been applied to gas turbines. The paper assists readers to make an assessment of the benefit that are derived from applying this technology to their gas turbines