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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Concept explainers

Buckling of columns

The column is described as a vertical member of the structure that carries an axial compressive load, and buckling is a lateral deformation of the column under the application of load.

Question

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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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