drakevery407 drakevery407

28-01-2024
Engineering

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A steam turbine is to develop 10MW at 6000rpm for driving a compressor. The steam enters at 50bar, 600⁰c an exhaust at 0.2bar. The thermal efficiency of the turbine is 0.90 and its mechanical efficiency is 0.86. Determine (a)The number of impulse stages are used throughout (b)The nozzle height for the first stage with full admission. Assume nozzle efficiency as 0.87 nozzle angle 25⁰ limiting blade velocity 500m/s and the blades operating at maximum efficiency

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