User:Thomasmee3/sandbox

Inlet air fogging consists of spraying finely atomized water (fog) into the inlet airflow of a gas turbine engine. The fog droplets evaporate quickly, which cools the inlet air and increases the power output of the turbine.

Water is typically pressurized to 2000 psi (138 bar) then injected into the inlet air duct through an array of stainless steel fog nozzles. Demineralized is used for fogging is to prevent fouling of compressor blades that can occur if water with mineral content is evaporated in the airflow. Fog systems typically produce a water spray, with about 90% of the water flow being in droplets that are 20 microns in diameter or smaller.

Inlet fogging has been in commercial use since the late 1980’s and is a popular retrofit technology. As of 2015, there were more than 1000 inlet fog systems installed around the world. Inlet fog systems are, “simple, easy to install and operate” and less expensive than other power augmentation systems such as evaporative coolers and chillers.