‘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 mis Mean blade velocity 1125 mls Nozzle angle :16° Outlet angle, first row of moving blades 18 Outlet angle, fixed guide blades Outlet angle, second row of moving blades 22 36° Steam flow rate 126kgs ‘The ratio of the relative velocity at outlet (o that at inlet is 0.84 for all the blade. Determine (@) The velocity of whirl. (b) The tangential thrust on the blades. (©) The axial thrust on the blades. (d) The power developed. (€) The blading efficiency. The following particulars refer to a two-row velocity-compounded impulse wheel whichforms the first stage of a combination turbine:: 630 m/s: 125 m/sSteam velocity at nozzle outletMean blade velocityNozzle 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/sThe 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.(e) The blading efficiency.

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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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‘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 mis Mean blade velocity 1125 mls Nozzle angle :16° Outlet angle, first row of moving blades 18 Outlet angle, fixed guide blades Outlet angle, second row of moving blades 22 36° Steam flow rate 126kgs ‘The ratio of the relative velocity at outlet (o that at inlet is 0.84 for all the blade. Determine (@) The velocity of whirl. (b) The tangential thrust on the blades. (©) The axial thrust on the blades. (d) The power developed. (€) The blading efficiency.

The following particulars refer to a two-row velocity-compounded impulse wheel which
forms the first stage of a combination turbine:
: 630 m/s
: 125 m/s
Steam velocity at nozzle outlet
Mean blade velocity
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.
(e) The blading efficiency.

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