A Francis radial-flow hydroturbine (inward) has the following dimensions: r2=2.8 m, ri=1.02 m, b2=0.85 m, and bi=2.10 m. The runner blade angles are B2= 66° and B1= 18.5° at the turbine inlet and outlet, respectively. The runner rotates at N=240 rpm. The volume flow rate at design conditions is 84 m2/s. Irreversible losses are neglected in this preliminary analysis. Calculate the angle az through which the wicket gates should turn the flow, where az is measured from the radial direction at the runner inlet. Calculate the swirl angle a1, where ai is measured from the radial direction at the runner outlet. Predict the power output (MW) and required net head (m).

A Francis radial-flow hydroturbine (inward) has the following dimensions: r2=2.8 m, ri=1.02 m, b2=0.85 m, and bi=2.10 m. The runner blade angles are B2= 66° and B1= 18.5° at the turbine inlet and outlet, respectively. The runner rotates at N=240 rpm. The volume flow rate at design conditions is 84 m2/s. Irreversible losses are neglected in this preliminary analysis. Calculate the angle az through which the wicket gates should turn the flow, where az is measured from the radial direction at the runner inlet. Calculate the swirl angle a1, where ai is measured from the radial direction at the runner outlet. Predict the power output (MW) and required net head (m).

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.

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A Francis radial-flow hydroturbine (inward) has the following dimensions: r2=2.8 m,
ri=1.02 m, b2=0.85 m, and bi=2.10 m. The runner blade angles are B2= 66° and Bi= 18.5°
at the turbine inlet and outlet, respectively. The runner rotates at N=240 rpm. The
volume flow rate at design conditions is 84 m2/s. Irreversible losses are neglected in this
preliminary analysis. Calculate the angle az through which the wicket gates should turn
the flow, where az is measured from the radial direction at the runner inlet. Calculate the
swirl angle a1, where ai is measured from the radial direction at the runner outlet.
Predict the power output (MW) and required net head (m).

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