Homework Help is Here – Start Your Trial Now!
Engineering
Chemical Engineering
5- Air, at 100 °C, flows through a thin-walled steel tube with an inside diameter 25 mm. The wall thickness is 0.5 mm. Thermal conductivity of the steel is 40 W/mk. The tube is exposed to an environment at 20 °C with heat transfer coefficient of 10 W/m²K. The film coefficient at the inner surface is 50 W/m²K. Calculate (i) Overall heat transfer coefficient, Ui, ii) Heat loss per m length, (iii) What thickness of insulation having thermal conductivity of 0.035 W/mK must be applied to reduce the heat loss by 50%?

5- Air, at 100 °C, flows through a thin-walled steel tube with an inside diameter 25 mm. The wall thickness is 0.5 mm. Thermal conductivity of the steel is 40 W/mk. The tube is exposed to an environment at 20 °C with heat transfer coefficient of 10 W/m²K. The film coefficient at the inner surface is 50 W/m²K. Calculate (i) Overall heat transfer coefficient, Ui, ii) Heat loss per m length, (iii) What thickness of insulation having thermal conductivity of 0.035 W/mK must be applied to reduce the heat loss by 50%?

Introduction to Chemical Engineering Thermodynamics
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
See similar textbooks
icon
Related questions
Question
5- Air, at 100 °C, flows through a thin-walled steel tube with an inside diameter 25 mm. The wall thickness is 0.5 mm. Thermal conductivity of the steel is 40 W/mk. The tube is exposed to an environment at 20 °C with heat transfer coefficient of 10 W/m²K. The film coefficient at the inner surface is 50 W/m²K. Calculate (i) Overall heat transfer coefficient, Ui, (ii) Heat loss per m length, (iii) What thickness of insulation having thermal conductivity of 0.035 W/mK must be applied to reduce the heat loss by 50%?
Transcribed Image Text:5- Air, at 100 °C, flows through a thin-walled steel tube with an inside diameter 25 mm. The wall thickness is 0.5 mm. Thermal conductivity of the steel is 40 W/mk. The tube is exposed to an environment at 20 °C with heat transfer coefficient of 10 W/m²K. The film coefficient at the inner surface is 50 W/m²K. Calculate (i) Overall heat transfer coefficient, Ui, (ii) Heat loss per m length, (iii) What thickness of insulation having thermal conductivity of 0.035 W/mK must be applied to reduce the heat loss by 50%?
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Introduction to Chemical Engineering Thermodynami…
Introduction to Chemical Engineering Thermodynami…
Chemical Engineering
ISBN:
9781259696527
Author:
J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:
McGraw-Hill Education
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemical Engineering
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
Elements of Chemical Reaction Engineering (5th Ed…
Elements of Chemical Reaction Engineering (5th Ed…
Chemical Engineering
ISBN:
9780133887518
Author:
H. Scott Fogler
Publisher:
Prentice Hall
Process Dynamics and Control, 4e
Process Dynamics and Control, 4e
Chemical Engineering
ISBN:
9781119285915
Author:
Seborg
Publisher:
WILEY
Industrial Plastics: Theory and Applications
Industrial Plastics: Theory and Applications
Chemical Engineering
ISBN:
9781285061238
Author:
Lokensgard, Erik
Publisher:
Delmar Cengage Learning
Unit Operations of Chemical Engineering
Unit Operations of Chemical Engineering
Chemical Engineering
ISBN:
9780072848236
Author:
Warren McCabe, Julian C. Smith, Peter Harriott
Publisher:
McGraw-Hill Companies, The
SEE MORE TEXTBOOKS