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Estimate the number for stages required for the turbine which is a multi-stage axial turbine designed...

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Mechanical Engineering

Estimate the number for stages required for the turbine which isa multi-stage axial turbine designed with impulse stages andoperating with an inlet pressure and temperature of 6 bar and 900 Kand outlet pressure of 1 bar.

The isentropic efficiency of the turbine is 85 %.

All the stages are to have a nozzle outlet angle of 75 degreesand equal inlet and outlet rotor blade angles.

Mean blade speed is 250 m/s and the axial velocity is 150 m/sand is a constant across the turbine.

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