This article elaborates the basic program and the counting method of the life evaluation with feast squares according to Weibull distribution for the turbine cooler.

The indirect combined cycle, which consists of a steam cycle and a nitrogen gas turbine cycle with a pre-cooler, could be the first choice.

Here an example is: heating the feedwater of condensing turbine by exhaust steam of a back pressure turbine (through tubular steam cooler) to raise the set's heat economy.