Katı Atık Enerji Santralinde Gaz Motoru ile Birleştirilmiş S-CO₂ Döngüsünün Eksergoekonomik Değerlendirmesi

Year 2025, Volume: 1 Issue: 2, 70 - 79, 30.11.2025

Alperen Tozlu , Marta Trninic , Emrah Özahi

Abstract

Bu çalışmada, Türkiye'nin Bayburt şehrinde bulunan bir belediye katı atık termik santralinin (KAT) bir gaz motorundan süperkritik karbondioksit (S-CO₂) çevrimi uygulanarak egzoz atık ısısının geri kazanımı incelenmiştir. Kurulu gücü 1450 kW olan santralde, S-CO₂ sisteminin entegre edilmesiyle yaklaşık %7,5 ekstra güç üretimine karşılık gelen 108,65 kW ek güç üretilebilmektedir. Santralin gerçek verileri kullanılarak termodinamik model geliştirilmiş ve sistem performansının doğru bir şekilde değerlendirilmesi sağlanmıştır. Geliştirilen çevrimin enerjetik ve ekserjetik verimlilikleri, enerji transferi ve ekserji yıkım değerleri açısından belirlenmiştir. Ayrıca, santral bileşenleri için maliyet dağılımı ve yatırım öngörüleri sağlayan Özgül Ekserji Maliyetlendirme (SPECO) yöntemi kullanılarak eksergoekonomik analizler gerçekleştirilmiştir. Sonuçlar, S-CO₂ çevriminin birleştirilmesinin hem enerji hem de ekserji verimliliğini artırdığını ve aynı zamanda genel ekonomik performansı da iyileştirdiğini ortaya koymaktadır. Sonuç olarak önerilen sistem, katı atık bazlı enerji üretim santrallerinde atık ısının geri kazanımı için sürdürülebilir ve etkili bir çözüm sunmaktadır.

Keywords

S-CO2 , Waste-to-energy. , Termo-ekonomik , Optimizasyon , Genetik Algoritma

Supporting Institution

TÜBİTAK

Project Number

114M142

Thanks

Bu çalışma, TÜBİTAK (Türkiye Bilimsel ve Teknolojik Araştırma Kurumu) tarafından 114M142 numaralı proje kapsamında desteklenmiştir. Yazarlar TÜBİTAK'a ve CEV (Temiz Enerji ve Araçlar) enerji şirketine teşekkürlerini sunarlar.

Exergoeconomic Evaluation of a S-CO₂ Cycle Coupled with a Gas Engine in a Solid Waste Power Plant

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.

Keywords

S-CO2 , Thermo-economy , Optimization , Genetic Algorithm , Waste-to-energy.

Supporting Institution

TÜBİTAK

Project Number

114M142

Thanks

This study is supported by TÜBİTAK (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.

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