Gas turbine inlet air cooling device and indirect cooling method

The invention relates to the technical field of gas turbine cooling, in particular to a gas turbine inlet air cooling device and an indirect cooling method. According to the gas turbine inlet air cooling device and the indirect cooling method, firstly, air is input into a spraying mechanism, spraying evaporative cooling is carried out, cooled air is guided into a condensation mechanism through a flow guide pipe, the condensation mechanism covers the outer side of the flow guide pipe, secondary cooling is carried out on the cooled air in the flow guide pipe by utilizing a heat exchange mode, the cooling effect is better, then the flow guide pipe outputs condensed air into a demisting mechanism, and the demisting mechanism takes out moisture in the air and inputs the air into a gas turbine, so that the use effect of the gas turbine is better, meanwhile, recycling can be carried out on the condensed water removed through demisting, energy is saved, cooling is carried out by adopting a mode that direct cooling an