Exergoeconomic and exergoenvironmental analyses of a diesel engine operating in dual-fuel mode with diesel-tire pyrolysis oil blend and biogas
Environmental Progress and Sustainable Energy, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Basım Tarihi: 2026
- Doi Numarası: 10.1002/ep.70662
- Dergi Adı: Environmental Progress and Sustainable Energy
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Applied Science & Technology Source, Chemical Abstracts Core, Compendex, Environment Index, Greenfile, INSPEC, Natural Science Collection (ProQuest), Engineering Source (EBSCO), Materials Science & Engineering Collection (ProQuest), Technology Collection (ProQuest)
- Anahtar Kelimeler: clean energy, decarbonization, life cycle assessment, SDG 12, sustainable energy, waste recovery
- Yıldız Teknik Üniversitesi Adresli: Evet
Özet
This study carries out exergoeconomic and exergoenvironmental analyses of a diesel engine that is operated in dual-fuel operation mode by tire pyrolysis oil (TPO)—diesel blend and biogas (BG). For this purpose, TPO was produced by the pyrolysis of waste tires first and then a D80TPO20 blend (80 vol % diesel + 20 vol % tire pyrolysis oil) was prepared. The produced blend was used in a diesel engine, accompanied by various flow rates of BG supplied through intake air. Experiments were conducted at a fixed crankshaft speed of 1500 rpm while varying engine loads between 2.5 Nm and 10 Nm. Exergoeconomic and exergoenvironmental analyses were carried out using experimental data. A Life Cycle Assessment (LCA) was used to produce the TPO and BG data for the exergoenvironmental analysis. The exergy efficiency of the engine was 27.70% and 23.94% for diesel (D100) and D80TPO20 operations (at an engine load of 10 Nm). It gradually decreased as biogas was added. As a result, the exergy efficiency of the engine was determined to be 22.41% for D80TPO20 + 0.5 L/min BG operation, 21.06% for D80TPO20 + 1.0 L/min BG operation, and 19.54% for D80TPO20 + 2.0 L/min BG operation. By performing an exergoeconomic analysis, it was found that the specific exergy cost of the work produced by the crankshaft was 128.22 US$/GJ for D100, 133.28 US$/GJ for D80TPO20, 143.07 US$/GJ for D80TPO20 + 0.5 L/min BG, 152.86 US$/GJ for D80TPO20 + 1.0 L/min BG, and 166.62 US$/GJ for D80TPO20 + 2.0 L/min BG at an engine load of 10 Nm. The LCA impacts of the TPO and BG used in this study were determined to be 153 mPt/kg and −159 mPt/m3 (negative sign is due to fertilizer substitution), respectively. Through exergoenvironmental analysis, the specific environmental impacts are determined to be 23.51 mPt/MJ for D100, 25.86 mPt/MJ for D80TPO20, 26.34 mPt/MJ for D80TPO20 + 0.5 L/min BG, 26.88 mPt/MJ for D80TPO20 + 1.0 L/min BG, and 26.77 mPt/MJ for D80TPO20 + 2.0 L/min BG at 10 Nm engine load. It may be concluded that D100 is still the best fuel among the fuel scenarios used in this study in the perspectives of exergy, exergoeconomic, and exergoenvironmental analyses. However, although TPO and BG addition adversely affected the performance parameters of the engine, it partially displaced the diesel fuel and thereby reduced the amount of diesel fuel used in the engine.