from a condenser, which is suctioned by the feed water pump and sent to the heat recovery steam
generator and so on [9]. Figure 1(b) show the CCGT power plant with two shaft gas turbine as topping
cycle (also named free power turbine), the first shaft use to drive the compressor and the second use to
drive the generator. Figure 2(a) show the CCGT power plant with effect intercooler gas turbine. Figure
2(b) show the CCGT power plant with effect regenerative gas turbine.