Question
The air mass flow rate at the inlet of a jet engine is 10 kg/s. At the exit of the turbine the stagnation enthalpy
The air mass flow rate at the inlet of a jet engine is 10 kg/s. At the exit of the turbine the stagnation enthalpy is 600 kJ/kg. The mass flow rate of fuel in the jet engine combustor = 0.04 kg/s and in the afterburner is mfAR is 0.06 kg/s. The combustion efficiency is mfc in the afterburner is AB = 0.5. The mass flow rate of air that is left at the exit from the afterburner is 6 kg/s. The maximum temperature in the afterburner is 1650 K. 1. What is the excess air XAB in the afterburner? 2. What is the excess air c in the jet engine combustor? Note: for standard fuel, LHV = 43,500 kJ/kg and minL = 14.66.
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