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9. An inward flow reaction turbine works under a head of (22.5 m). The external and internal diameters of the runner are (1.35 and 1 m) respectively. The angle of guide vanes is (15%) and the moving vanes are radial at inlet. Radial velocity of flow through the runner is constant and there is no velocity of whirl at outlet. Determine the speed of the runner in rpm and the angle of vane at outlet. If the turbine develops (375 kW), find the specific speed. Neglect friction losses. [Ans. 206.5 rpm, 19º53', 81.6]

9. An inward flow reaction turbine works under a head of (22.5 m). The external and internal diameters of the runner are (1.35 and 1 m) respectively. The angle of guide vanes is (15%) and the moving vanes are radial at inlet. Radial velocity of flow through the runner is constant and there is no velocity of whirl at outlet. Determine the speed of the runner in rpm and the angle of vane at outlet. If the turbine develops (375 kW), find the specific speed. Neglect friction losses. [Ans. 206.5 rpm, 19º53', 81.6]

Elements Of Electromagnetics
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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An inward flow reaction turbine works under a head of (22.5 m).The external andinternal diameters of therunner are(1.35 and 1m)respectively.The angle of guide vanesis (15°)and the moving vanes are radial at inlet.Radial velocity of flow through the runneris constant and there is no velocity of whirl at outlet.Determine the speed of the runnerin rpm and the angle of vane at outlet.If the turbine develops (375 kW),find the specificspeed.Neglect friction losses.

[Ans.206.5 rpm,19°53',81.6]

9. An inward flow reaction turbine works under a head of (22.5 m). The external and internal diameters of the runner are (1.35 and 1 m) respectively. The angle of guide vanes is (15%) and the moving vanes are radial at inlet. Radial velocity of flow through the runner is constant and there is no velocity of whirl at outlet. Determine the speed of the runner in rpm and the angle of vane at outlet. If the turbine develops (375 kW), find the specific speed. Neglect friction losses. [Ans. 206.5 rpm, 19º53', 81.6]
Transcribed Image Text:9. An inward flow reaction turbine works under a head of (22.5 m). The external and internal diameters of the runner are (1.35 and 1 m) respectively. The angle of guide vanes is (15%) and the moving vanes are radial at inlet. Radial velocity of flow through the runner is constant and there is no velocity of whirl at outlet. Determine the speed of the runner in rpm and the angle of vane at outlet. If the turbine develops (375 kW), find the specific speed. Neglect friction losses. [Ans. 206.5 rpm, 19º53', 81.6]
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