NN 100 Question #1 [2.0 Marks] An axial flow compressor has inlet stagnation temperature of 300+NN K. The compressor pre

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Nn 100 Question 1 2 0 Marks An Axial Flow Compressor Has Inlet Stagnation Temperature Of 300 Nn K The Compressor Pre 1 (50.26 KiB) Viewed 19 times

NN 100 Question #1 [2.0 Marks] An axial flow compressor has inlet stagnation temperature of 300+NN K. The compressor pressure ratio is 10 with compressor efficiency of 80%. The mass flow rate of air is 20 kg/s. The inlet guide vanes with air angle of 10° maintains the absolute flow Mach number at the compressor inlet is 0.4. Consider at mean: the degree of reaction 0.5, flow coefficient 0.6, and stage loading 0.3. The hub to tip radius ratio at the first stage is 0.4. Determine the air and blade angles at rotor and stator entry, number of stages, corrected stage temperature rise if required, rotational speed, power required, pressure ratio developed by the stage and maximum relative Mach number in the whole compressor. Draw velocity triangle for first stage at mean.