The following particulars refer to a two-row velocity-compounded impulse wheel which forms the first stage of a combination turbine: Steam velocity at nozzle outlet : 630 m/s Mean blade velocity : 125 m/s Nozzle angle : 16° Outlet angle, first row of moving blades : 18° Outlet angle, fixed guide blades : 22° Outlet angle, second row of moving blades : 36° Steam flow rate : 2.6 kg/s The ratio of the relative velocity at outlet to that at inlet is 0.84 for all the blade. Determine (a) The velocity of whirl. (b) The tangential thrust on the blades. (c) The axial thrust on the blades. (d) The power developed.
The following particulars refer to a two-row velocity-compounded impulse wheel which forms the first stage of a combination turbine: Steam velocity at nozzle outlet : 630 m/s Mean blade velocity : 125 m/s Nozzle angle : 16° Outlet angle, first row of moving blades : 18° Outlet angle, fixed guide blades : 22° Outlet angle, second row of moving blades : 36° Steam flow rate : 2.6 kg/s The ratio of the relative velocity at outlet to that at inlet is 0.84 for all the blade. Determine (a) The velocity of whirl. (b) The tangential thrust on the blades. (c) The axial thrust on the blades. (d) The power developed.
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:The following particulars refer to a two-row velocity-compounded impulse wheel which
forms the first stage of a combination turbine:
Steam velocity at nozzle outlet
: 630 m/s
Mean blade velocity
: 125 m/s
Nozzle angle
: 16°
Outlet angle, first row of moving blades
: 18°
Outlet angle, fixed guide blades
: 22°
Outlet angle, second row of moving blades
: 36°
Steam flow rate
:2.6 kg/s
The ratio of the relative velocity at outlet to that at inlet is 0.84 for all the blade.
Determine
(a) The velocity of whirl.
(b) The tangential thrust on the blades.
(c) The axial thrust on the blades.
(d) The power developed.
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