The thick oil is used in automobiles to reduce the friction and thick oil acts as lubrication in many industrial applications. A thick oil is to be pumped along a cast iron pipeline with an inside diameter of 108 mm at a mass flow rate of 7.8 kg/s. The density of the thick oil is 890 kg/m3 and has a viscosity of 0.002 kg/ms. Determine the pressure drop per unit length of pipe line. DVpRe =L pV²AP = 4 f-D 2105)f = 0.001375 · 1 + ( 20,000DRSurface roughnessE, ftE, inDrawn tubing (brass, lead, glass, etc.)Commercial steel or wrought ironAsphalted cast ironGalvanized iron0.000060.00180.00480.0060.0100.0072–0.0360.012-0.120.0000050.000150.00040.0005Cast iron0.00085Wood stave0.0006-0.003Concrete0.001–0.01Riveted steel0.003-0.030.036-0.36

Inside diameter of the cast iron pipeline, di = 108 mm = 0.108 m Mass flow rate of the thick oil, m…

Answered: The thick oil is used in automobiles to…

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

Chapter1: Introduction

Section: Chapter Questions

Problem 1.1P

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The thick oil is used in automobiles to reduce the friction and thick oil acts as lubrication in many industrial applications. A thick oil is to be pumped along a cast iron pipeline with an inside diameter of 108 mm at a mass flow rate of 7.8 kg/s. The density of the thick oil is 890 kg/m³ and has a viscosity of 0.002 kg/ms. Determine the pressure drop per unit length of pipe line.

DVp
Re =
L pV²
AP = 4 f-
D 2
105)
f = 0.001375 · 1 + ( 20,000
D
R
Surface roughness
E, ft
E, in
Drawn tubing (brass, lead, glass, etc.)
Commercial steel or wrought iron
Asphalted cast iron
Galvanized iron
0.00006
0.0018
0.0048
0.006
0.010
0.0072–0.036
0.012-0.12
0.000005
0.00015
0.0004
0.0005
Cast iron
0.00085
Wood stave
0.0006-0.003
Concrete
0.001–0.01
Riveted steel
0.003-0.03
0.036-0.36

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