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In a certain stage of impulse turbine the nozzle angle is 20° with the plane of the wheel. The mean diameter of the blade ring is 2.8m. It develops 54kW at 2400rpm> Four nozzles, each of 1cm diameter expand steam isentropically from 1.5MPa, 250°C tor 50kPa. The axial thrust is 3.34N. Calculate (1) the blade angles a entrance and exit of the moving blades, (2) The power lost in blad friction, and(3) the stage Efficiency

In a certain stage of impulse turbine the nozzle angle is 20° with the plane of the wheel. The mean diameter of the blade ring is 2.8m. It develops 54kW at 2400rpm> Four nozzles, each of 1cm diameter expand steam isentropically from 1.5MPa, 250°C tor 50kPa. The axial thrust is 3.34N. Calculate (1) the blade angles a entrance and exit of the moving blades, (2) The power lost in blad friction, and(3) the stage Efficiency

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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In a certain stage of impulse turbine the nozzle angle is 20° with the plane oi he wheel. The mean diameter of the blade ring is 2.8m. It develops 54k W at 2400rpm> Four nozzles, each of lcm diameter expand steam isentropically from 1.5MPA, 250°C to 50kPa. The axial thrust is 3.34N. Calculate (1) the blade angles at entrance and exit of the moving blades, (2) The power lost in blade friction, and(3) the stage Efficiency
Transcribed Image Text:In a certain stage of impulse turbine the nozzle angle is 20° with the plane oi he wheel. The mean diameter of the blade ring is 2.8m. It develops 54k W at 2400rpm> Four nozzles, each of lcm diameter expand steam isentropically from 1.5MPA, 250°C to 50kPa. The axial thrust is 3.34N. Calculate (1) the blade angles at entrance and exit of the moving blades, (2) The power lost in blade friction, and(3) the stage Efficiency
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