A pipeline connecting two tanks contains four standard elbows, a plug valve that is fully open and a gate valve that is half open. The line is commercial steel pipe, 25 mm internal diameter, length 120 m. The properties of the fluid are: viscosity 0.99 mNM-2s, density 998 kg/m3. Calculate the total pressure drop due to friction when the flow rate is 3500 kg/h.

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
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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A pipeline connecting two tanks contains four standard elbows, a plug valve that is fully
open and a gate valve that is half open. The line is commercial steel pipe, 25 mm internal
diameter, length 120 m.

The properties of the fluid are: viscosity 0.99 mNM-2s, density 998 kg/m3.
Calculate the total pressure drop due to friction when the flow rate is 3500 kg/h.

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