Question 7 An axial flow water Kaplan turbine operates under a head of 2.5 m while...

Question 7

An axial flow water Kaplan turbine operates under a head of 2.5 m while the rotational speed is 75 rpm. The runner tip diameter is 4.8 m and the hub diameter is 2.4 m. The flow rate is 48.5 m3/s and hydraulic efficiency of 93%. Assuming zero whirl at exit, determine: Sketch the inlet and outlet velocity triangles at the MEAN radius and calculate:

1.1 The runner blade inlet and exit angles at mean radius. ANS: +/- 74˚

1.2. The theoretical power developed? ANS: +/- 1.1MW

1.3. The mechanical efficiency if the shaft output power is 980 kW? ANS: +/- 88.6%

This is only one question, sir. Pls solve it in a comprehensive manner showing all the steps in detail. Thank you!!

Expert Solution

samet mamat answered 8 months ago

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