Science – Society – Technology
Table 4 Optimization results using genetic algorithm and Nelder–Mead simplex method
Parameters | Definition | Initial mode | Optimal mode using genetic algorithm | Optimal mode using Nelder–Mead simplex method | Units |
|---|---|---|---|---|---|
\(P_{2}\) | Separator pressure | 500 | 304.3 | 326.4 | kPa |
\(P_{10}\) | CO2 turbine inlet pressure | 15,000 | 13,083 | 12,067 | kPa |
\(P_{5}\) | Steam turbine exit pressure | 20 | 37.36 | 22.01 | kPa |
Wtur, steam | The power output of the steam turbine | 150.1 | 194.2 | 218.1 | kW |
\(W_{{{\text{tur}},{\text{ CO}}_{2} }}\) | The power output of the CO2 turbine | 525.5 | 606.8 | 460.8 | kW |
Wpump, steam | Power consumption of pump 1 | 0.2436 | 0.2626 | 0.2762 | kW |
\(W_{{{\text{pump}},\;{\text{CO}}_{2} }}\) | Power consumption of pump 2 | 274.1 | 235.6 | 219 | kW |
Wnet | Total net power output | 401.3 | 316 | 459.5 | kW |
\(\eta_{{{\text{ex}}}}\) | Exergy efficiency | 32.46 | 39.21 | 36.16 | % |