Fluid Mechanics: Fundamentals and Applications
4th Edition
ISBN: 9781259696534
Author: Yunus A. Cengel Dr., John M. Cimbala
Publisher: McGraw-Hill Education
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Chapter 6, Problem 54P
The impeller of a centrifugal pump has inner and outer diameters of 15 and 35 cm, respectively, and a flow rate of 0.15 m3/s at a rotational speed of 1400 rpm. The blade width of the impeller is 8 cm at the inlet and 3.5 cm at the outlet. If water enters the impeller in the radial direction and exits at an angle of 60° from the radial direction, determine the minimum power requirement for the pump.
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29Water enters the impeller of a centrifugal pump radially at a flow rate of 250 L/min. The rotational speed of the impeller shaft is given as 400 rpm. Since the outer diameter of the impeller is 60 cm and the tangential component of the output velocity at this point is 55 m/s, calculate the torque (Nm) coming to the impeller.
A centrifugal pump impeller has a diameter of 15 cm at the inlet and a blade width of 6.3 cm. The radius at the exit is 35 cm and the wing width is 3.2 cm. Centrifugal pump rotates at 1500 rpm. The water enters the fins in a normal (perpendicular) manner and leaves 38 ° deviating from the radial direction. Volumetric flow rate is given as 0.25 m ^ 3 / s. Find the required shaft power for the centrifugal pump, assuming the efficiency as 100%. (P = water = 998 kg / m ^ 3)
Chapter 6 Solutions
Fluid Mechanics: Fundamentals and Applications
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