In this study

exergy dynamic and advanced exergy analyses are applied to the turbojet engine to assess its mexogenous

endogenous

exogenous

avoidable and unavoidable exergies under the environment conditions of 15 °C temperature and 1 bar pressure. The maximum exergy point in the turbojet engine is found for the combustor in which C11H23 (Jet-A1) fuel is combusted with air

while the minimum one is determined for the air compressor head where the free air enters. The combustion chamber has the maximum fuel

product and irreversibility rates and the air compressor has the minimum fuel and product exergy values

while the minimum irreversibility is found for the turbine. Maximum improvement potential rate is found for the combustion chamber (5141.27 kW)

while minimum rate is determined for the turbine of the system (6.95 kW). Also

the turbine component has the highest exergy efficiency (97.20%) due to its expansion process

while combustion chamber component has the lowest exergy efficiency (55.39%) due to low efficient combustion process of the fuel. Furthermore

the mexogenous exergy destructions from maximum to minimum are found for the combustion chamber

air compressor and gas turbine units

respectively. Considering exergy dynamic analysis

the mexogenous exergy destruction rates of the combustion chamber

air compressor and gas turbine are found as 184.4 kW

103.97 kW and 9.99 kW

respectively. Considering all results

the combustion chamber is the primer component to be handled for better efficiency and improvement.