Several main techniques for inlet air cooling of gas turbines has been briefly presented

including evaporized cooling

absorpted refrigeration

compressed refrigeration

and ice-storaged cooling.Considering factors such as gas turbine's atomospheric temperature property

meteological condition in the locality

fuel price

and electricity price etc.

a method for evaluating different schemes for inlet air cooling has been put forward.Taking GE Frame 6B type gas turbine under meteological condition in one regiion as example

a calculation has been made

and results of economic analysis for different schemes being given.