@article{article_1800949, title={Exergoeconomic Evaluation of a S-CO₂ Cycle Coupled with a Gas Engine in a Solid Waste Power Plant}, journal={International Journal of Energy Horizon (IJEH)}, volume={1}, pages={70–79}, year={2025}, author={Tozlu, Alperen and Trninic, Marta and Özahi, Emrah}, keywords={S-CO2, Thermo-economy, Optimization, Genetic Algorithm, Waste-to-energy.}, abstract={In this study, the exhaust waste heat recovery from a gas engine of a municipal solid waste power plant (MSWPP) in Bayburt city, Turkey, through the application of a supercritical carbon dioxide (S-CO₂) cycle was investigated. The plant with an installed power capacity of 1450 kW, can be possible to generate an additional 108.65 kW of power by integrating the S-CO₂ system, corresponding to approximately 7.5% extra power production. A thermodynamic model was developed using actual data of the plant, enabling accurate assessment of system performance. The energetic and exergetic efficiencies of the developed cycle were determined in terms of energy transfer and exergy destruction values. Exergoeconomic analyses were also carried out using the Specific Exergy Costing (SPECO) method, providing cost allocation and investment insights for the plant components. The results reveal that the coupling of S-CO₂ cycle increases both the energy and exergy efficiencies, while also improving the overall economic performance. Consequently, the proposed system offers a sustainable and effective solution for the recovery of waste heat in solid waste-based power generation stations.}, number={2}, publisher={Ankara Yildirim Beyazit University}, organization={TÜBİTAK}