The inner and outer diameters of the impeller of a centrifugal pump are 25 and 50 Cm respectively. The pump discharges 8 m of water per minute while operating at 550 rpm against a head of 12 m. The diameter of the discharge outlet is 15 cm. The outlet diameter of the backward curved impeller vane is 40°. The flow area from the impeller inner to outer radius is constant and is equal to 750 cm2. Draw the velocity triangles and calculate: i. Inlet angle of the vane ii, Hydraulic efficiencies based on static head, and on total head. iii, Minimum speed for starting the pump in rpm.

The inner and outer diameters of the impeller of a centrifugal pump are 25 and 50 Cm respectively. The pump discharges 8 m of water per minute while operating at 550 rpm against a head of 12 m. The diameter of the discharge outlet is 15 cm. The outlet diameter of the backward curved impeller vane is 40°. The flow area from the impeller inner to outer radius is constant and is equal to 750 cm2. Draw the velocity triangles and calculate: i. Inlet angle of the vane ii, Hydraulic efficiencies based on static head, and on total head. iii, Minimum speed for starting the pump in rpm.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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