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Air at a temperature of 300 K enters a ten-stage axial flow compression at the rte of 3.5 kg/s. The pressure ratio is 6.0 and the isentropic efficiency is 90%. The process is adiabatic and the compressor has symmetrical stages. The axial velocity of 120 m/s is uniform across the stages and the mean blade speed is 200 m/s. Assume that the temperature change is same in each stage.

      Determine the direction of the air at entry to and exit from the rotor and stator blades. Also find the power given to the air:

For air, take Cp = 1.005 kJ/kg and g = 1.4.

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