3) A centrifugal pump delivers water between two reservoirs with a 300 ft. elevation difference (Az). The 12-in diameter suction pipe (f;= 0.020) is 100 ft. long (L1) and the 10-in diameter discharge pipe (f2= 0.026) is 5000 ft. long (L2). The pump has a performance curve defined by the equation: h, = 375 - Q where h, is the pump head in feet and Q is the discharge in ft /s. a) Calculate the discharge, Q. b) Calculate the NPSHA. ASsume standard atmospheric conditions, 60°F water, and a pump elevation 8 ft. above the lower reservoir Az D, L2 h %3D D,L1. ft
3) A centrifugal pump delivers water between two reservoirs with a 300 ft. elevation difference (Az). The 12-in diameter suction pipe (f;= 0.020) is 100 ft. long (L1) and the 10-in diameter discharge pipe (f2= 0.026) is 5000 ft. long (L2). The pump has a performance curve defined by the equation: h, = 375 - Q where h, is the pump head in feet and Q is the discharge in ft /s. a) Calculate the discharge, Q. b) Calculate the NPSHA. ASsume standard atmospheric conditions, 60°F water, and a pump elevation 8 ft. above the lower reservoir Az D, L2 h %3D D,L1. ft
Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN:9781305635180
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Braja M. Das, Nagaratnam Sivakugan
Chapter7: Seepage
Section: Chapter Questions
Problem 7.1P
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Transcribed Image Text:3) A centrifugal pump delivers water between two
reservoirs with a 300 ft. elevation difference (Az).
The 12-in diameter suction pipe (f1= 0.020) is 100
ft. long (L1) and the 10-in diameter discharge pipe
(f2= 0.026) is 5000 ft. long (L2). The pump has a
performance curve defined by the equation:
h, = 375 - Q² where h, is the pump head in feet
and Q is the discharge in ft/s.
a) Calculate the discharge, Q.
b) Calculate the NPSHA. Assume standard atmospheric conditions, 60°F water, and a pump
elevation 8 ft. above the lower reservoir
Az
D, L2 2
D, Ly. ft
LOM
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