The nozzle of the impulse stage of a turbine receives steam at 15 bar and 300 C and discharges at 10 bar. The nozzle efficiency is 95% and the nozzle angle is 29o. The blade speed is that required for maximum work and the inlet angle of the blades is that required for entry of the steam without shock. The blade exit angle is 5o less than the inlet angle. The blade velocity coefficient is 0.9. Calculate for a steam flow of 1350 kg/h: (i) The diagram power; (ii) The diagram efficiency.

Question-Answer › Category: Applied Thermodynamics › The nozzle of the impulse stage of a turbine receives steam at 15 bar and 300 C and discharges at 10 bar. The nozzle efficiency is 95% and the nozzle angle is 29o. The blade speed is that required for maximum work and the inlet angle of the blades is that required for entry of the steam without shock. The blade exit angle is 5o less than the inlet angle. The blade velocity coefficient is 0.9. Calculate for a steam flow of 1350 kg/h: (i) The diagram power; (ii) The diagram efficiency.

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