Energetic and exergetic assessment of operating biofuel, hydrogen and conventional JP-8 in a J69 type of aircraft turbojet engine

Akdeniz, Halil Yalcin; Ballı, Özgür

doi:10.1007/s10973-021-10879-z

Cited by 25 publications

(6 citation statements)

References 51 publications

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“…Nonetheless, hydrogen fuel resulted in reduced environmental exhaust emissions. Gunesakar et al 36 and Akdeniz and Balli 37 also conducted similar investigations, further exploring hydrogen’s impact on engine performance aspects. Balli and Caliskan 38 applied energy, exergy, and environmental and sustainability analyses on a jet engine which used jet and hydrogen fuels.…”

Section: Introductionmentioning

confidence: 89%

Effects of using hydrogen on the exergetic and environmental damage performance of an UAV turbojet engine

Yucer,

Nacakli

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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In this study, the performance effects of using hydrogen instead of JP-8 fuel in an unmanned aerial vehicle (UAV) jet engine was investigated. Exergy analysis and environmental damage analysis were used to obtain performance parameters. These performance parameters were exergy destruction ratio, thrust-specific fuel consumption, air-to-fuel ratio, exergy efficiency, waste exergy ratio, environmental effect factor, sustainability index, and exergetic improvement potential values. Turbojet engine was operated at three different throttle settings (50%, 75%, and 100%) to examine the impact of different load types on the performance parameters. The results obtained by using JP-8 and hydrogen fuels at different throttle settings showed consistency. For all throttle settings, the highest exergy efficiencies took place in the nozzle as approximately 90%. On the other hand, the combustion chamber had the lowest exergy efficiencies for all conditions and took values between 30% and 40%. Calculated exergy destruction ratios indicated that the hydrogen use improved or saved the jet engine’s energy performance. Except the combustion chamber, compressor, turbine, and nozzle exergy destruction ratios decreased as 6.2%, 6.5%, and 10.8%, respectively. Moreover, the use of hydrogen fuel did not significantly change the performance parameters, in fact reduced the environmental impact approximately 113%. The findings indicated the potential benefits of hydrogen fuel use when compared to JP-8 fuel.

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Section: Introductionmentioning

confidence: 89%

Effects of using hydrogen on the exergetic and environmental damage performance of an UAV turbojet engine

Yucer,

Nacakli

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…As far as exergy-based environmental analysis for aircraft engines is concerned, the performance tools of environmental effect factor, ecological effect factor and ecological objection function can be helpful to measure both system-level and its sub-components. In this manner, these indicators can be given as follows [ 35 , 41 , 42 , 62 ]: Environmental effect factor (EEF): …”

Section: Environmental Analysismentioning

confidence: 99%

“…The performance indicators of exergetic sustainability index and the sustainable efficiency factor can be used to observe sustainability level of aircraft engines and sub-components. These are as below [ 35 , 41 , 42 , 62 ]: Exergetic sustainability Index: …”

Section: Sustainability Level Analysismentioning

confidence: 99%

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Energy, exergy, thermoecologic, environmental, enviroeconomic and sustainability analyses and assessments of the aircraft engine fueled with biofuel and jet fuel

Akdeniz

Ballı²,

Çalışkan

2023

J Therm Anal Calorim

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“…Sistemin genel ekserji denge denklemi aşağıdaki şekilde yazılır [21,22]. ise sistemdeki tersinmezliklerden kaynaklanan toplam ekserji yıkımıdır [21,22,[26][27][28][29].…”

Section: Yöntem Ve Anali̇zunclassified

Energy, Exergy, Thermoecological, Sustainability, Thermoeconomic And Exergoeconomic Performance Analyses of A Piston-Prop Engine Used in Helicopters

Akdeniz

2021

Mühendis Ve Makina

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Bu çalışmada, helikopterlerde kullanılan piston-prop motorlar için enerji, ekserji, termoekolojik, sürdürülebilirlik, termoekonomik ve eksergoekonomik analizler açıklanmış ve 190 SHP güce sahip bir piston-prop motor üzerinde bu analizler uygulanmıştır. İlk olarak Piston-prop motor bir termodinamik sistem olarak ele alınmış olup buna göre sistemin kontrol hacmi, giriş ve çıkış akışları, denge denklemleri ve ölü hal koşulları belirlenmiştir. Elde edilen bulgulara göre sistemin enerji verimi % 15.51 olarak bulunurken, ekserji verimi % 11 olarak hesaplanmıştır. Sistemin entropi üretimi, sürdürülebilirlik indeksi, termoekolojik performans katsayısı, termoekonomik parametre değeri, kayıp ekserjisine bağlı eksergoekonomik parametre değeri, yıkım ekserjisine bağlı eksergoekonomik parametre değeri ve toplam eksergoekonomik parametre değeri sırasıyla 2,940 W/K, 1.124, 0.161, 2.20 W/TL, 1.29 W/TL, 2.50 W/TL ve 3.79 W/TL bulunmuştur. Analizler sonucunda sisteme giren yakıtın oluşturduğu enerjinin büyük ölçüde kayba ve yıkıma uğradığı görülmüştür. Elde edilen analiz sonuçlarından hareketle, motorun verim ve performansının yükseltilmesine ek olarak sistemdeki kayıpların ve tersinmezliklerin azaltılabilmesi açısından, bu tipteki motorların soğutma teknolojilerinin iyileştirilmesi ile buradaki kayıpların azaltılması ve genel sistem performansının optimize edilmesi önerilebilir.

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Energetic and exergetic assessment of operating biofuel, hydrogen and conventional JP-8 in a J69 type of aircraft turbojet engine

Cited by 25 publications

References 51 publications

Effects of using hydrogen on the exergetic and environmental damage performance of an UAV turbojet engine

Effects of using hydrogen on the exergetic and environmental damage performance of an UAV turbojet engine

Energy, exergy, thermoecologic, environmental, enviroeconomic and sustainability analyses and assessments of the aircraft engine fueled with biofuel and jet fuel

Energy, Exergy, Thermoecological, Sustainability, Thermoeconomic And Exergoeconomic Performance Analyses of A Piston-Prop Engine Used in Helicopters

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