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Evaluate the friction factor. Write the Reynolds number as function of the volume flowrate Qin (Use 2 significant digits on coefficients. Do not enter units as a part of your response.) Re=

Evaluate the friction factor. Write the Reynolds number as function of the volume flowrate Qin (Use 2 significant digits on coefficients. Do not enter units as a part of your response.) Re=

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Part 4 Evaluate the friction factor. ft3 Write the Reynolds number as function of the volume flowrate Q in. (Use 2 significant digits on coefficients. Do not enter units as a part of your response.) Re= Part 5 Evaluate the friction factor What is the relative roughness for the pipe? E/D- Part 6 Evaluate the system curve for the pump. (a) Calculate values for the pump head at volume flowrates of 100, 140, 160, and 200 gal/min. Q-100 gal/min hp- Q-140 gal/min hp- Q-160 gal/min hp- ft ft ft Q-200 gal/min h₂- ft (b) After plotting the system curve on the pump performance characteristics by using the values calculated for pump head as a function of volume flowrate, find the volume flowrate in gal/min for maximum efficiency for a 7.5-in-diameter pump impeller. Q- gal/min (c) What is the pump head associated with these conditions? h₂- ft
Transcribed Image Text:Part 4 Evaluate the friction factor. ft3 Write the Reynolds number as function of the volume flowrate Q in. (Use 2 significant digits on coefficients. Do not enter units as a part of your response.) Re= Part 5 Evaluate the friction factor What is the relative roughness for the pipe? E/D- Part 6 Evaluate the system curve for the pump. (a) Calculate values for the pump head at volume flowrates of 100, 140, 160, and 200 gal/min. Q-100 gal/min hp- Q-140 gal/min hp- Q-160 gal/min hp- ft ft ft Q-200 gal/min h₂- ft (b) After plotting the system curve on the pump performance characteristics by using the values calculated for pump head as a function of volume flowrate, find the volume flowrate in gal/min for maximum efficiency for a 7.5-in-diameter pump impeller. Q- gal/min (c) What is the pump head associated with these conditions? h₂- ft
Part 1 Part 2 Part 3 hp A centrifugal pump having a 7.5-in-diameter impeller and the characteristics shown in the figure below is to be used to pump gasoline through 4000 ft of commercial steel 3-in.-diameter pipe. The pipe connects two reservoirs having open surfaces at the same elevation. Determine the flowrate. Do you think this pump is a good choice? This figure is referred to as the pump performance characteristics. 500 8 in. dia 400 7 出300 6 Head, ft 200 100 65 60 55 50 40 bhp 30 25 20 80 ° 40 120 160 200 240 280 320 Capacity, gal/min Write the system equation for this flow system as function of the friction factor f and volume flowrate Q in gal/min. (Use 2 significant digits on coefficients. Do not enter units as a part of your response.)
Transcribed Image Text:Part 1 Part 2 Part 3 hp A centrifugal pump having a 7.5-in-diameter impeller and the characteristics shown in the figure below is to be used to pump gasoline through 4000 ft of commercial steel 3-in.-diameter pipe. The pipe connects two reservoirs having open surfaces at the same elevation. Determine the flowrate. Do you think this pump is a good choice? This figure is referred to as the pump performance characteristics. 500 8 in. dia 400 7 出300 6 Head, ft 200 100 65 60 55 50 40 bhp 30 25 20 80 ° 40 120 160 200 240 280 320 Capacity, gal/min Write the system equation for this flow system as function of the friction factor f and volume flowrate Q in gal/min. (Use 2 significant digits on coefficients. Do not enter units as a part of your response.)
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