For the analysis, we chose the AP1000 steam cycle, as shown in Fig. \ref{517108}. It is a PWR designed by Westinghouse, producing about 1100 MWe. The heat from the primary loop is used to generate steam in the steam generator (SG). This steam then enters the turbine after part of it is extracted to provide heat for the Moisture Separator & Reheater (MSR). The AP1000 turbine consists of a double-flow, high-pressure (HP) cylinder and three double-flow, low-pressure (LP) cylinders. The steam conditions at the inlet of HP cylinder are 55 bar and 271\(^{\circ}\)C. Part of the steam is extracted from the HP turbine to provide heat to MSR and High Pressure Feedwater Heater. The HP turbine outlet then goes through the MSR to be dried before entering the LP turbine. Part of the steam is again extracted from the LP turbine to provide heat to the Low Pressure Feedwater Heaters. The outlet steam from the LP turbine is condensed before being pumped and heated as feedwater for the steam generator \cite{Wibisono_2016}.