Helikopterlerde Kullanılan Bir Piston-Prop Motorun Enerji, Ekserji, Termoekolojik, Sürdürülebilirlik, Termoekonomik ve Eksergoekonomik Performans Analizleri

Yıl 2021, Cilt: 62 Sayı: 705, 830 - 844, 08.12.2021

Halil Yalcin Akdeniz

https://doi.org/10.46399/muhendismakina.980409

Cited By: 2

Öz

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.

Anahtar Kelimeler

Helikopter motorları, enerji, ekserji, sürdürülebilirlik, termoekonomik analiz

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

Öz

In this study, energy, exergy, thermoecological, sustainability, thermoeconomic and exergoeconomic analyzes for piston-prop engines used in helicopters are explained and these analyses are applied on a piston-prop engine with 190 SHP power. Firstly, the piston-prop engine is considered as a thermodynamic system and accordingly the control volume, inlet and outlet flows, balance equations and dead state conditions of the system are determined. According to the findings, the energy efficiency of the system is found as 15.51%, while the exergy efficiency is calculated as 11%. The system’s entropy production, sustainability index, thermoecological performance coefficient, thermoeconomic parameter value, exergoeconomic parameter value due to loss exergy, exergoeconomic parameter value due to destruction exergy and total exergoeconomic parameter value are found as 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, respectively. As a result of the analyses, it is noticed that the energy generated by the fuel entering the system is largely lost and depleted. In view of the obtained results, in addition to increasing the efficiency and performance of the engine, in order to reduce the losses and irreversibility in the system, it can be recommended to improve the cooling technologies of this type of engines.

Anahtar Kelimeler

Helicopter engines, energy, exergy, sustainability, thermoeconomic analysis

Kaynakça

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