Application of exergetic analysis to inverted Brayton cycle engine at different flight conditions
Yükleniyor...
Tarih
2023
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/embargoedAccess
Özet
The aviation sector has continued to be modernized by overcoming technological challenges involving strict
constraints for mission requirements. In this context, the great attention to newly proposed methods which the
requirements satisfied has been drawn in the related aviation field. As a novelty, performance and exergy an alyses of inverted Brayton cycle engine (IBCE) are investigated at supersonic speed (2.5 M) by comparing it with
a conventional afterburning turbojet engine (CATE) in this study. Moreover, exergy analysis is performed solely
for the IBCE at 5 M where only the IBCE could generate thrust. According to performance findings, specific fuel
consumption (SFC) of the CATE changes from 57.97 g/kNs and 71.72 g/kNs whereas it raises from 51.76 g/kNs
and 56.57 g/kNs for the IBCE due to variation of turbine inlet temperature (TIT) and afterburner exit temper ature (AET) at 2.5 M. Also, thermal efficiency of the CATE varies approximately between 32.97% and 46.73%
while that of IBCE changes between 50.72% and 58.43% for IBCE at 2.5 M. At hypersonic speed, SFC of the IBCE
is measured to vary between 71.34 g/kN and 85.49 g/kN at 5 of Mach. Lastly, the exergy efficiency of IBCE
changes between 23.73% and 27.70% at same conditions. Where the higher TIT leads to lowering it whereas the
higher AET provides increment of exergy efficiency. This study shows that thanks to cycle change, gas turbine
engines could provide more advantages for new generation aircraft compared with conventional ones.
Açıklama
Anahtar Kelimeler
Brayton cycle engine, Exergy analysis, Supersonic aircraft, Turbojet engine
Kaynak
Energy
WoS Q Değeri
Q1
Scopus Q Değeri
N/A
Cilt
283
