| 1. | "We're just starting now to look at a redesign of the draft tube,"
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| 2. | A "'hydraucone "'is a form of draft tube used with a hydro turbine.
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| 3. | It has a locking zipper, muffler and fell-length draft tube . $ 209.
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| 4. | Efficiency of this kind of draft tube is less almost 60%
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| 5. | Of greater concern is what happens in the turbulent water of the draft tube.
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| 6. | Efficiency of this type of draft tube is 90%
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| 7. | 2 . "'Simple elbow type draft Tube "'- It consists of an extended elbow type tube.
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| 8. | A higher turbine location, however, increases the suction that is imparted on the turbine blades by the draft tube.
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| 9. | After passing through the units, water is discharged through the draft tubes to one free surface and one full-flow tailrace tunnel.
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| 10. | It does this by distributing the water that exits from the turbine uniformly over the larger area of the draft tube exit.
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