Suppose the pump as shown in the figure is operating at free delivery conditions. The pipe, both upstream and downstream of the pump, has an inner diameter of 2.0 cm and nearly zero roughness. The minor loss coefficient associated with the sharp inlet is 0.50, each valve has a minor loss coefficient of 2.4, and each of the three elbows has a minor loss coefficient of 0.90. The contraction at the exit reduces the diameter by a factor of 0.60 (60% of the pipe diameter), and the minor loss coefficient of the contraction is 0.15. Note that this minor loss coefficient is based on the average exit velocity, not the average velocity through the pipe itself. The total length of pipe is 8.75 m, and the elevation difference is (z1 - z) = 4.6 m. The pump's performance follows a parabolic curve fit, Havailable = H, - aV where Ho = 19.8 m is the pump's shutoff head, and a = 0.00426 m/(Lpm)2 is a coefficient of the curve fit. Estimate the operating volume flow rate V in Lpm (liters per minute). The density and viscosity of water at T= 20°C are 998.0 kg/m3 and 1.002x103 kg/m-s, respectively. V, 20 Z1 Reservoir Pump V2

Suppose the pump as shown in the figure is operating at free delivery conditions. The pipe, both upstream and downstream of the pump, has an inner diameter of 2.0 cm and nearly zero roughness. The minor loss coefficient associated with the sharp inlet is 0.50, each valve has a minor loss coefficient of 2.4, and each of the three elbows has a minor loss coefficient of 0.90. The contraction at the exit reduces the diameter by a factor of 0.60 (60% of the pipe diameter), and the minor loss coefficient of the contraction is 0.15. Note that this minor loss coefficient is based on the average exit velocity, not the average velocity through the pipe itself. The total length of pipe is 8.75 m, and the elevation difference is (z1 - z) = 4.6 m. The pump's performance follows a parabolic curve fit, Havailable = H, - aV where Ho = 19.8 m is the pump's shutoff head, and a = 0.00426 m/(Lpm)2 is a coefficient of the curve fit. Estimate the operating volume flow rate V in Lpm (liters per minute). The density and viscosity of water at T= 20°C are 998.0 kg/m3 and 1.002x103 kg/m-s, respectively. V, 20 Z1 Reservoir Pump V2

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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