por favor ayúdame con este ejercicio... The pressure of point B of the hydraulic system must be 495 psig, being the expense of 758 gal/min. The fluid is hydraulic oil (s = 0.887; v = 3.99x10-5 m2 /s). The total length of the pipe 4 inchesin diameter is 45 feet. Elbows are standard. Do not take into account the frictional energy loss inthe 6-inch pipe. Calculate the pressure required at point A, at lb/ft2. You must develop thesolution of the problem in units of the English system.7 piesflow4 pulgsuddenexpansion(K=0.28).Bthe pipes are made of steel (=1,5x10+ pies)6 pulg

Given:First Pipe diameter, d1=4 in=412ftPipe diameter after expansion, d2=6 in=612ft=0.5 ftTotal…

Answered: The pressure of point B of the…

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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por favor ayúdame con este ejercicio...

The pressure of point B of the hydraulic system must be 495 psig, being the expense of 758 gal/
min. The fluid is hydraulic oil (s = 0.887; v = 3.99x10-5 m2 /s). The total length of the pipe 4 inches
in diameter is 45 feet. Elbows are standard. Do not take into account the frictional energy loss in
the 6-inch pipe. Calculate the pressure required at point A, at lb/ft2. You must develop the
solution of the problem in units of the English system.
7 pies
flow
4 pulg
sudden
expansion
(K=0.28)
.B
the pipes are made of steel (=1,5x10+ pies)
6 pulg

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$Given : First Pipe diameter, d_{1} = 4 in = \frac{4}{12} ft Pipe diameter after expansion, d_{2} = 6 in = \frac{6}{12} ft = 0.5 ft Total pipe length, L = 45 ft Specific gravity of oil, {SG}_{o} = 0.887 Kinematic viscosity of oil, ν = 3.99 * 10^{- 5} m^{2} / s = 3.99 * 10^{- 5} * 10.7639 {ft}^{2} / s = 42.948 * 10^{- 5} {ft}^{2} / s (1 m^{2} / s = 10.7639 {ft}^{2} / s) Pressure at B, P_{B} = 495 psig = 495 * 144 lb / {ft}^{2} = 71280 lb / {ft}^{2} (1 psi = 144 lb / {ft}^{2}) Oil flow rate, Q = 758 gal / \min = \frac{758}{448.831} {ft}^{3} / s = 1.689 {ft}^{3} / s Loss coefficient for sudden expansion, K_{ex} = 0.28 Elevation difference between A and B, Z_{B} - Z_{A} = 7 ft Standard elbows = 2 Surface roughness of 4 in pipe, ε = 1.5 * 10^{- 4} ft Neglect frictional energy loss in 6 in pipe Find : The pressure required at point A, in lb / {ft}^{2}$

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