P6.59 The following data were obtained for flow of 20°C water at 20 m/h through a badly corroded 5-cm-diameter pipe that slopes downward at an angle of 8°:P1 = 420 kPa, z, = 12 m, 2 = 250 kPa, Z2 = 3 m. Estimate (a) the roughness ratio of the pipe and (b) the percentage change in head loss if the pipe were smooth and the flow rate the same. %3D %3D

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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P6.59 The following data were obtained for flow of 20°C water at
20 m'/h through a badly corroded 5-cm-diameter pipe that
slopes downward at an angle of 8°: p1 = 420 kPa, z, = 12 m,
p2 = 250 kPa, z2 = 3 m. Estimate (a) the roughness ratio of
the pipe and (b) the percentage change in head loss if the
pipe were smooth and the flow rate the same.
%3D
%3D
Transcribed Image Text:P6.59 The following data were obtained for flow of 20°C water at 20 m'/h through a badly corroded 5-cm-diameter pipe that slopes downward at an angle of 8°: p1 = 420 kPa, z, = 12 m, p2 = 250 kPa, z2 = 3 m. Estimate (a) the roughness ratio of the pipe and (b) the percentage change in head loss if the pipe were smooth and the flow rate the same. %3D %3D
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