Pump delivers 0.05 m/s flow of 40°C water, and the intake pipe L = 4m & D = 20 cm. The pump intake is located 10 m above the water surface level in the reservoir. How much lowering of the pump elevation will avoid the cavitation. Given: f = 0.018, K̟ = 0.1, K, = 0.2 10 m Pan = 101.3 kPa abs 740x 40c = 9.732 kN/m³ = 7.38 kPa abs Prap at 40°C = 7.38-101.3 = -93.92 kPa gage O Lowering of the pump needed to avoid cavitation = 7.44 m O Lowering of the pump needed to avoid cavitation = 9.65 m O Lowering of the pump needed to avoid cavitation = 0.56 m O None of the answers are correct.
Pump delivers 0.05 m/s flow of 40°C water, and the intake pipe L = 4m & D = 20 cm. The pump intake is located 10 m above the water surface level in the reservoir. How much lowering of the pump elevation will avoid the cavitation. Given: f = 0.018, K̟ = 0.1, K, = 0.2 10 m Pan = 101.3 kPa abs 740x 40c = 9.732 kN/m³ = 7.38 kPa abs Prap at 40°C = 7.38-101.3 = -93.92 kPa gage O Lowering of the pump needed to avoid cavitation = 7.44 m O Lowering of the pump needed to avoid cavitation = 9.65 m O Lowering of the pump needed to avoid cavitation = 0.56 m O None of the answers are correct.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Pump delivers 0.05 m/s flow of 40°C water, and the intake pipe L = 4m & D = 20 cm. The pump intake is located 10 m above the water surface level in the
reservoir. How much lowering of the pump elevation will avoid the cavitation.
Given: f= 0.018, Ke = 0.1, K, = 0.2
10 m
Par = 101.3 kPa abs
YH.0x 40°c = 9.732 kN/m³
Pvap at 40°C
= 7.38 kPa abs
= 7.38-101.3 = -93.92 kPa gage
O Lowering of the pump needed to avoid cavitation = 7.44 m
O Lowering of the pump needed to avoid cavitation = 9.65 m
O Lowering of the pump needed to avoid cavitation = 0.56 m
O None of the answers are correct.
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