## Abstract

This paper presents thermodynamic and thermoeconomic analyses as well as optimization of a re-compression supercritical CO_{2} cycle. A gas turbine cycle (GT) is adapted as a model to an existing plant to generate additional power in Gaziantep Municipal Solid Waste Power Plant (GMSWPP). The total capital cost rate and total cost rate of the GT cycle are found to be 20.47 $/h and 77.14 $/h, respectively utilizing SPECO by using the exhaust gas of 16 kg/s with 1.9 bar and 566.7 °c. The net power, the energy and exergy efficiencies, the total cost and the total capital cost rates of the GT cycle are optimized by +1.73%, +3.21%, +2.45%, −1.11% and −1.64%, respectively using NSGA-II in MATLAB in the range of 2.5≤PR≤4, 200≤P_{6}≤216, 16≤T_{0}≤23 and 9.1≤LMTD≤12.9. This paper provides an originality such that optimization as well as thermodynamic and thermoeconomic analyses is performed simultaneously for an existing MSW power plant, which can be stressed that there are scarce amounts of studies related on this field. Moreover, as another novelty, it can be emphasized that net power output of such like plants which have similar capacity can be improved using the developed model and NSGA-II optimization method.

Original language | English |
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Pages (from-to) | 168-180 |

Number of pages | 13 |

Journal | Energy |

Volume | 143 |

DOIs | |

Publication status | Published - 15 Jan 2018 |

Externally published | Yes |

### Bibliographical note

Publisher Copyright:© 2017 Elsevier Ltd

### Funding

This study is supported by TUBİTAK (the Scientific and Technological Research Council of Turkey ) with the project under the grant number of 114M142 . The authors would like to thank TUBİTAK and CEV (Clean Energy & Vehicles) energy.

Funders | Funder number |
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TUBİTAK | |

Türkiye Bilimsel ve Teknolojik Araştirma Kurumu | 114M142 |

## Keywords

- Genetic algorithm
- Optimization
- Solid waste
- Thermoeconomy
- Waste-to-energy

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