A centrifugal pump lifts water against a static head Az = VEN m. The pipe setup has a constant diameter of 0.08 m, major losses in the suction side h,s = EN m and in the discharge side hLD is 3 m. The pump impeller has a diameter of 0.15 m, exit width of 0.015 m, exit blade angle of 22° and speed of N = 20EN rpm. The hydraulic efficiency is 0.85. If the flow at the entrance is radial, find the discharge, pump head, atmospheric pressure Pat, vapor pressure P, and maximum allowable height of the pump from the feeding tank water surface elevation if the pump is operating under T 25 °C at altitude H= 20EN m. %3D 0. = NPSHIH, = 1.21×10N3 !3! SM = (P-abs -P,)/y-hST-0Hp EN=62 Es-mx 5256 Pa-abe !y =10.33(1– 2.256x10-H Ply=e1429-3985/(T+2334)) %3D

A centrifugal pump lifts water against a static head Az = VEN m. The pipe setup has a constant diameter of 0.08 m, major losses in the suction side h,s = EN m and in the discharge side hLD is 3 m. The pump impeller has a diameter of 0.15 m, exit width of 0.015 m, exit blade angle of 22° and speed of N = 20EN rpm. The hydraulic efficiency is 0.85. If the flow at the entrance is radial, find the discharge, pump head, atmospheric pressure Pat, vapor pressure P, and maximum allowable height of the pump from the feeding tank water surface elevation if the pump is operating under T 25 °C at altitude H= 20EN m. %3D 0. = NPSHIH, = 1.21×10N3 !3! SM = (P-abs -P,)/y-hST-0Hp EN=62 Es-mx 5256 Pa-abe !y =10.33(1– 2.256x10-H Ply=e1429-3985/(T+2334)) %3D

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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Question

Problem-3:
A centrifugal pump lifts water against a static head Az = EN m. The pipe setup has a constant diameter
of 0.08 m, major losses in the suction side h, = EN3 m and in the discharge side hLD is 3 m. The pump
impeller has a diameter of 0.15 m, exit width of 0.015 m, exit blade angle of 22° and speed of N = 20EN
rpm. The hydraulic efficiency is 0.85. If the flow at the entrance is radial, find the discharge, pump head,
atmospheric pressure Pat, Vapor pressure P, and maximum allowable height of the pump from the feeding
tank water surface elevation if the pump is operating under T 25 °C at altitude H= 20EN m.
%3D
0, = NPSHR/Hp =1.21×10³N
= (P
EN=62
Is-mx
at-abs-P,)/Y-hLsT -0H,
Pa-abs /Y = 10.33(1– 2.256x10-H)56
P,ly = e14.29-3985(T+233.4))

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