correct number of significant figures. 2.26. WP The Prandtl number, Npr, is a dimensionless group important in heat-transfer calculations. It is defined as C,e/k, where C, is the heat capacity of a fluid, µ is the fluid viscosity, and k is the thermal conductivity. For a particular fluid, C, = 0.583 J/(g : °C), k = 0.286 W/(m °C), and u (remember, it is dimensionless), showing your calculations; then determine it with a calculator. 1936 lbm/(ft · h). Estimate the value of Np, without using a calculator Answer 2.27. The Reynolds number is a dimensionless group defined for a fluid flowing in a pipe as Re Dup/μ where D is pipe diameter, u is fluid velocity, p is fluid density, and u is fluid viscosity. When the value of the Reynolds number is less than about 2100, the flow is laminar-that is, the fluid flows in smooth streamlines. For Reynolds numbers above 2100, the flow is turbulent, characterized by a great deal of agitation. Liquid methyl ethyl ketone (MEK) flows through a pipe with an inner diameter of 2.067 inches at an average velocity of o.48 ft/s. At the fluid temperature of 20°C the density of liquid MEK is o.805 g/cm3 and the viscosity is o.43 centipoise [ 1 cP = 1.00 x 10¬³ kg/(m · s)]. Without using a calculator, determine whether the flow is laminar or turbulent. Show your -3 calculations.

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 problems that are listed below need to be solved and you may access those problems via viewing them through the attached images in this request. **Question Number #2.27 **

correct number of significant figures.
2.26. WP The Prandtl number, Npr, is a dimensionless group important in heat-transfer calculations. It is defined as C,e/k,
where C, is the heat capacity of a fluid, µ is the fluid viscosity, and k is the thermal conductivity. For a particular fluid,
C, = 0.583 J/(g : °C), k = 0.286 W/(m °C), and u
(remember, it is dimensionless), showing your calculations; then determine it with a calculator.
1936 lbm/(ft · h). Estimate the value of Np, without using a calculator
Answer
2.27. The Reynolds number is a dimensionless group defined for a fluid flowing in a pipe as
Re
Dup/μ
where D is pipe diameter, u is fluid velocity, p is fluid density, and u is fluid viscosity. When the value of the Reynolds number is
less than about 2100, the flow is laminar-that is, the fluid flows in smooth streamlines. For Reynolds numbers above 2100, the
flow is turbulent, characterized by a great deal of agitation.
Liquid methyl ethyl ketone (MEK) flows through a pipe with an inner diameter of 2.067 inches at an average velocity of o.48 ft/s.
At the fluid temperature of 20°C the density of liquid MEK is o.805 g/cm3 and the viscosity is o.43 centipoise [
1 cP = 1.00 x 10¬³ kg/(m · s)]. Without using a calculator, determine whether the flow is laminar or turbulent. Show your
-3
calculations.

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