Intercooler system for gas turbine engines

A method for operating a gas turbine engine (10) includes channeling compressed airflow (53) discharged from a first compressor (14) through an intercooler (50) having a cooling medium flowing therethrough, channeling a working fluid (72) through the intercooler to facilitate increasing an operating temperature of the working fluid, and channeling the discharged working fluid to a combustor (18) to facilitate increasing an operating efficiency of the gas turbine engine.