Steam issues from the nozzles of a de-Laval turbine with the velocity of 920 m/s. The nozzle angle is 20°, the mean diameter of the blades is 25 cm and the speed of rotation is 20,000 r.p.m. The steam flow through the turbine is 0.18 kg/s. If the ratio of relative velocity at outlet from the blades to that at inlet is 0.82. Calculate, (a) Tangential force on blades per second (b) Workdone on blades per second (c) Power of the wheel (d) Efficiency of blading (e) Axial force on blades' (f) Inlet angle of blades for shockless inflow of steam Assume that the outlet angle of blades is equal to the inlet angle.
Steam issues from the nozzles of a de-Laval turbine with the velocity of 920 m/s. The nozzle angle is 20°, the mean diameter of the blades is 25 cm and the speed of rotation is 20,000 r.p.m. The steam flow through the turbine is 0.18 kg/s. If the ratio of relative velocity at outlet from the blades to that at inlet is 0.82. Calculate, (a) Tangential force on blades per second (b) Workdone on blades per second (c) Power of the wheel (d) Efficiency of blading (e) Axial force on blades' (f) Inlet angle of blades for shockless inflow of steam Assume that the outlet angle of blades is equal to the inlet angle.
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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Transcribed Image Text:Steam issues from the nozzles of a de-Laval
turbine with the velocity of 920 m/s. The nozzle
angle is 20°, the mean diameter of the blades
is 25 cm and the speed of rotation is 20,000 r.p.m.
The steam flow through the turbine is 0.18 kg/s.
If the ratio of relative velocity at outlet from the
blades to that at inlet is 0.82. Calculate,
(a) Tangential force on blades per second
(b) Workdone on blades per second
(c) Power of the wheel
(d) Efficiency of blading
(e) Axial force on blades
(f) Inlet angle of blades for shockless inflow
of steam
Assume that the outlet angle of blades is equal
to the inlet angle.
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