1 The internal and external diameters of the impeller of a centrifugal pump are 200 mm and 400 mm respectively. The pump is running at 1200 rpm. Forward blades make an angle of 150o at exit and at inlet the angle is 20o. The blade thicknesses at the inlet and outlet are 100mm and 70mm respectively. The hydraulic efficiency of the pump is 87%. Assume the water enters the impeller radially. i Draw neatly the outlet velocity diagram and the inlet velocity diagram. ii Find the Euler power of the pump. iii Find the net Head of the pump.
1 The internal and external diameters of the impeller of a centrifugal pump are 200 mm and 400 mm respectively. The pump is running at 1200 rpm. Forward blades make an angle of 150o at exit and at inlet the angle is 20o. The blade thicknesses at the inlet and outlet are 100mm and 70mm respectively. The hydraulic efficiency of the pump is 87%. Assume the water enters the impeller radially. i Draw neatly the outlet velocity diagram and the inlet velocity diagram. ii Find the Euler power of the pump. iii Find the net Head of the pump.
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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1 The internal and external diameters of the impeller of a centrifugal pump are 200 mm and 400 mm respectively. The pump is running at 1200 rpm. Forward blades make an angle of 150o at exit and at inlet the angle is 20o. The blade thicknesses at the inlet and outlet are 100mm and 70mm respectively. The hydraulic efficiency of the pump is 87%. Assume the water enters the impeller radially.
i Draw neatly the outlet velocity diagram and the inlet velocity diagram.
ii Find the Euler power of the pump.
iii Find the net Head of the pump.
Ans: (ii)140.65W; (iii) 43.42m
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