A Novel Concept for Enviro-Sustainability Assessments of Aircraft Jet Engines Under Different Fueled Conditions
Green Energy and Technology, Springer International Publishing Ag, ss.475-498, 2025
- Yayın Türü: Kitapta Bölüm / Araştırma Kitabı
- Basım Tarihi: 2025
- Doi Numarası: 10.1007/978-3-031-89869-3_29
- Yayınevi: Springer International Publishing Ag
- Sayfa Sayıları: ss.475-498
- Anahtar Kelimeler: Aero jet engines, Different fuel usages, Environmental analysis, Exergy-based analyses, Sustainability analysis
- Eskişehir Osmangazi Üniversitesi Adresli: Evet
Özet
International aviation sector has been experiencing significant growth in both the number of flights and total flight hours. Its contribution to the greenhouse gas emissions and environmental degradation has become a major concern. The development of greener and more sustainable aircrafts has attracted widespread interest. This study evaluates the environmental and sustainability (enviro-sustainability) performance of various jet-types of aircraft fuels, using thermodynamic principles. Seven alternative fuels (Kerosene (JP-8), JP-4, JP-5, JP-10, NO-2 Diesel, Camelina-Bio, and Avgas) are examined in a turbojet engine through step-by-step comparative analysis. The key findings reveal that the JP-series fuels (JP-4, JP-5, JP-8, JP-10) display a narrow range of ecological effect factors for the engine, while JP-8 is yielding the lowest impact (6.5170) and JP-4 has the highest impact (6.5489). The NO-2 Diesel’s ecological effect factor (6.5364) closely approximates that of JP-10 (6.5311) for the engine, indicating similar environmental footprints. In terms of sustainable efficiency, JP-8, JP-4, JP-5, and JP-10 fuels exhibit nearly identical values for the engine, although they fall below the efficiencies achieved by Camelina-Bio and Avgas. When operating the engine with the NO-2 Diesel, the turbojet’s overall performance metrics align closely with those of conventional jet fuels. The exergetic sustainability index of the JP-series fuels used in the engine are different only marginally: JP-8 attains the highest index (0.1813), while JP-4 records the lowest (0.1802). These closely clustered values suggest that all JP fuels share nearly equivalent sustainability characteristics for the engine. The NO-2 Diesel fueled engine’s exergetic sustainability index (0.1806) is similarly close to the JP-10 fueled mode (0.1808), reinforcing the notion that these two alternative fuels offer comparable sustainability profiles. When assessing individual engine components, the Combustion Chamber (CC) achieves its maximum exergy efficiency for the NO-2 Diesel operation, whereas the JP-8-fueled configuration yields the lowest exergy efficiency among the scenarios analyzed.