## 4 Discussion and Results
### Base Case  
Table 5 presents the electrical power produced and consumed by each component of the developed system. This information facilitates comparisons between the power-generation capacities of each cycle and the efficiencies resulting from integrating various processes into the bottoming cycle BC. Adding an organic and steam Rankine cycle to the base bottoming cycle yields an extra 123.25 MW of electricity generation compared to \begin{table}
\begin{tabular}{l c c c c} \hline \hline \multicolumn{1}{c}{**Parameter**} & \multirow{2}{*}{**Unit**} & \multicolumn{2}{c}{**Literature**} & \multicolumn{1}{c}{**Present**} & \multirow{2}{*}{**Deviation (\%)**} \\  & & **Study** & & \\ \hline Ambient temperature & \({}^{\circ}\)C & 19 & 19 & 0\% \\ \hline Pressure ratio (PR) & - & 12 & 12 & 0\% \\ \hline Flow rate of air mass & kg/s & 438 & 438 & 0\% \\ \hline Flow rate of fuel mass & kg/s & 8.8 & 8.84 & 0.45\% \\ \hline Outlet compressor temperature & \({}^{\circ}\)C & 315.7 & 318 & 0.723\% \\ \hline Maximum temperature & \({}^{\circ}\)C & 1100 & 1111 & 1\% \\ \hline Exhaust temperature & \({}^{\circ}\)C & 500 & 510.6 & 2.1\% \\ \hline Power output & MW & 150 & 148.7 & 0.87 \\ \hline Thermal efficiency & \% & 34 & 33.8 & 0.59\% \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Comparison of numerical results with a previous simulation study [55] on the Kirkuk gas turbine unit. Table 7 shows the exergoeconomic results of components of the suggested hybrid system. Also, the flow chart presented in Figure 4 displays the total cost rate (USD/h), the cost of destruction (USD/h), and the \(\rm{Ex}_{\rm{dest}}\) rate (MW) of the proposed hybrid system and individual components. The central circle indicates the rate of the total cost for the system. Each arrow pointing away from the central circle represents an individual hybrid system component. The total \(\rm{Ex}_{\rm{dest}}\) rate for the proposed system is approximately 284.264 MW, with a total cost rate of around USD 17,041/h and an energetic destruction cost of approximately USD 13,355/h. The PTCs exhibit the highest \(\rm{Ex}_{\rm{dest}}\) at nearly 56.91 MW and a total cost rate of USD 2210/h. The total cost of the suggested exergoeconomic hybrid system is USD 17,041.39/h, with an exergoeconomic factor of 20.8%. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Part** & \(\dot{\bf{E}}_{\bf{F}}\) & \(\dot{\bf{E}}_{\bf{P}}\) & \(\dot{\bf{E}}_{\bf{destruction}}\) & \(\dot{\bf{E}}_{\bf{destruction}}\) & \(\Psi\) \\  & **(MW)** & **(MW)** & **(MW)** & **(\%)** & **(\%)** \\ \hline AC & 151.5 & 135.2 & 16.32 & 5.547 & 89.27 \\ \hline CC & 555.5 & 421.7 & 133.8 & 45.49 & 75.91 \\ \hline GT & 276.1 & 264.4 & 11.71 & 3.978 & 95.76 \\ \hline HRSG & 175.7 & 153.9 & 21.8 & 7.407 & 78.59 \\ \hline HPST & 30.9 & 29.46 & 1.448 & 0.492 & 95.32 \\ \hline IPST & 33.92 & 31.82 & 2.103 & 0.7145 & 93.8 \\ \hline LPST & 69.63 & 63.03 & 6.6 & 2.243 & 90.52 \\ \hline Cond1 & 10.67 & 5.471 & 5.202 & 1.768 & 51.26 \\ \hline Pump1 & 0.1071 & 0.09193 & 0.01513 & 0.001543 & 85.86 \\ \hline OFWH1 & 9.221 & 3.922 & 5.3 & 1.801 & 42.53 \\ \hline Pump 2 & 0.3722 & 0.3282 & 0.04397 & 0.01494 & 88.18 \\ \hline OFWH2 & 17.96 & 13.31 & 4.647 & 1.579 & 74.12 \\ \hline Pump 3 & 0.8769 & 0.7888 & 0.08803 & 0.02992 & 89.96 \\ \hline PTC & 120.2 & 63.34 & 56.91 & 19.34 & 52.67 \\ \hline TST & 63.34 & 59.57 & 3.766 & 1.28 & 94.05 \\ \hline EVAP & 19.5 & 7.213 & 12.29 & 4.177 & 36.98 \\ \hline ORG T & 5.407 & 5.013 & 0.3942 & 0.1339 & 92.71 \\ \hline HE & 2.012 & 0.6793 & 1.333 & 0.4529 & 33.76 \\ \hline Cond2 & 0.5319 & 0.08809 & 0.4438 & 0.1508 & 16.56 \\ \hline Pump4 & 0.0738 & 0.05947 & 0.01432 & 0.004867 & 80.95 \\ \hline \hline \end{tabular}
\end{table} 
Table 6: The integrated hybrid system model’s energy evaluation findings.