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| Teaching Since: | May 2017 |
| Last Sign in: | 408 Weeks Ago, 5 Days Ago |
| Questions Answered: | 66690 |
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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
In a vertical-shaft inward-flow reaction turbine the sum of the pressure and kinetic heads at entrance to the spiral casing is 120 m and the vertical distance between this section and the tail-race level is 3 m. The peripheral velocity of the runner at entry is 30 m ·s−1, the radial velocity of the water is constant at 9 m ·s−1 and discharge from the runner is without whirl. The estimated hydraulic losses are: (1) between turbine entrance and exit from the guide vanes, 4.8 m (2) in the runner, 8.8 m, (3) in the draft tube, 790 mm, (4) kinetic head rejected to the tail race, 460 mm. Calculate the guide vane angle and the runner blade angle at inlet and the pressure heads at entry to and exit from the runner.
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