Answer to Question #126682 in Mechanical Engineering for Irvin

Question #126682
A hydro-electric plant is planned for a site where the available head is 286 m with an
average flow of 42 m3/s.
1.1 What is the available hydraulic power?

1.2 Assuming an overall efficiency of 88% and a runner rotational speed of 450 rpm,
what is the dimensionless specific speed?

1.3 What kind of turbine is suggested for this application?
In order to predict the operational performance of the turbine, it is decided to do tests on
a 1:20 scale model turbine operating under a head of 4 m.
1.3 At what speed is the model expected to run at?

1.4 What flow rate would have to be provided for the model?

1.5 What power is the model expected to deliver?
Expert's answer
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