A pump delivers water between a reservoir and a water tank. The surface water elevation of the water tank is 20m higher. The suction side contains an entrance strainer (Ks=2.5), and 50m of PVC pipe that is 25cm in diameter. The discharge side includes a 200m long PVC pipe, 25 cm in diameter, and a gate valve. The net positive suction head (NPSH) is 7.5m, and the design discharge is 150L/s. Determine the allowable elevation difference between the pump and the reservoir water surface, z s, to avoid cavitation. Assume a kinematic viscosity of 1x10-6 m 2 /s and a specific weight of 9.79kN/m 3 .
A pump delivers water between a reservoir and a water tank. The surface water elevation of the water tank is 20m higher. The suction side contains an entrance strainer (Ks=2.5), and 50m of PVC pipe that is 25cm in diameter. The discharge side includes a 200m long PVC pipe, 25 cm in diameter, and a gate valve. The net positive suction head (NPSH) is 7.5m, and the design discharge is 150L/s. Determine the allowable elevation difference between the pump and the reservoir water surface, z s, to avoid cavitation. Assume a kinematic viscosity of 1x10-6 m 2 /s and a specific weight of 9.79kN/m 3 .
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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A pump delivers water between a reservoir and a water tank. The surface water
elevation of the water tank is 20m higher. The suction side contains an entrance strainer (Ks=2.5), and
50m of PVC pipe that is 25cm in diameter. The discharge side includes a 200m long PVC pipe, 25 cm
in diameter, and a gate valve. The net positive suction head (NPSH) is 7.5m, and the design discharge is
150L/s. Determine the allowable elevation difference between the pump and the reservoir water surface,
z s, to avoid cavitation. Assume a kinematic viscosity of 1x10-6
m 2 /s and a specific weight of 9.79kN/m 3 .
Transcribed Image Text:20m
P
suction
inlet
reservoir
water tank
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