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  3. air enters the diffuser of a turbojet engine at 18

Air enters the diffuser of a turbojet engine at 18 kPa, 216 K, with a volumetric...

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Mechanical Engineering

Air enters the diffuser of a turbojet engine at 18 kPa, 216 K,with a volumetric flow rate of 230 m3/s and a velocityof 265 m/s. The compressor pressure ratio is 15, and its isentropicefficiency is 87%. Air enters the turbine at 1560 K and the samepressure as at the exit of the compressor. The turbine isentropicefficiency is 89%, and the nozzle isentropic efficiency is 97%. Thepressure at the nozzle exit is 18 kPa. Use an air-standardanalysis.

a)

Determine the rate of heat input to the combustor, in MW.

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