In the middle of the rectilinear section of the pressur

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In the middle of the rectilinear section of the pressure pipe with a diameter of d, mm and a length of 100 m, a valve with a hydraulic resistance coefficient m = 4 is installed. The fluid flow rate in the pipe is Q, l / s, and the hydraulic friction coefficient is  = 0.036. Find the total (total) pressure loss.
Set: fluid flow in the pipe Q = 7.5 l / s = 7.5 * 10-3 m3 / s; pipeline diameter d = 150 mm = 0.15 m; pipe length l = 100 m; coefficient of hydraulic resistance of the valve ζм = 4; hydraulic friction coefficient λ = 0,036.
Determine: total (total) pressure loss Σh.
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