The air mass flow rate of a jet engine is 12 kg/s. The stagnation enthalpy at...

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The air mass flow rate of a jet engine is 12 kg/s. The stagnation enthalpy at the exit of the turbine is 918 kJ/kg and the excess air is 4.5. Standard fuel is used in the engine so that LHV = 43,500 kJ/kg and minL = 14.66. 1. What should the mass flow rate of fuel injected in the afterburner be such that the stagnation enthalpy at the end of the afterburner is 1600 kJ/kg? 2. What is the excess air in the afterburner? 3. What is the maximum temperature in the afterburner? The air mass flow rate of a jet engine is 12 kg/s. The stagnation enthalpy at the exit of the turbine is 918 kJ/kg and the excess air is 4.5. Standard fuel is used in the engine so that LHV = 43,500 kJ/kg and minL = 14.66. 1. What should the mass flow rate of fuel injected in the afterburner be such that the stagnation enthalpy at the end of the afterburner is 1600 kJ/kg? 2. What is the excess air in the afterburner? 3. What is the maximum temperature in the afterburner?

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