Comparative Performance Metric Assessment of A Military Turbojet Engine Utilizing Hydrogen And Kerosene Fuels Through Advanced Exergy Analysis Method

Burak Yuksel, Ozgur Balli, Huseyin Gunerhan and Arif Hepbasli
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Burak Yuksel: Department of Mechanical Engineering, Ege University, Bornova, Izmir 35100, Turkey
Ozgur Balli: First Air Maintenance Factory Directorate, Ministry of Defence, Eskisehir 26320, Turkey
Huseyin Gunerhan: Department of Mechanical Engineering, Ege University, Bornova, Izmir 35100, Turkey
Arif Hepbasli: Department of Energy Engineering, Yasar University, Bornova, Izmir 35100, Turkey

Energies, 2020, vol. 13, issue 5, 1-22

Abstract: This study dealt with evaluating the (J85-GE-5H) military turbojet engine (TJE) in terms of exergetic and advanced exergetic analyses at Military (MIL) and Afterburner (AB) process modes by utilizing kerosene (JP-8) and hydrogen (H 2 ) fuels. First, exergy and advanced exergy analyses of the engine were performed using JP-8 fuel as per actual engine operating conditions. These analyses of the turbojet engine using hydrogen fuel were also examined parametrically. The performance evaluation of the engine was lastly executed by comparing the obtained results for both fuels. Based on the parametric studies undertaken, the entire engine’s exergetic efficiency with JP-8 was reckoned 30.85% at the MIL process mode while it was calculated as 16.98% at the AB process mode. With the usage of H 2 , the efficiencies of the engine decreased to 28.62% and 15.33% for the above mentioned two modes, respectively. As the supreme exergy destructions occurred in the combustion chamber (CC) and afterburner exhaust duct (ABED) segments, the new technological developments should be considered to design more efficient engines. As a result, the engine worked less efficiently with hydrogen fuel due to the enhancement in exergy destructions. Conversely, the greenhouse gas (GHG) emission parameters lessened with the utilization of H 2 fuel.

Keywords: turbojet engine; exergetic analysis; advanced exergetic analysis; performance evaluation; exergy efficiency; improved exergy efficiency; H 2 fuel (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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