Homework Help is Here – Start Your Trial Now!
Engineering
Chemical Engineering
Energy Balances and Insulation - Steam at 400°F is flowing through a steel pipe (k = 8.7 Btu/h•ft•°F) with an inner diameter of 4.5 in and an outer diameter of 5.0 in. The convection heat transfer coefficient on the inside of the pipe is 40 Btu/h•ft2.°F. The pipe is insulated with a 2-in thick layer of fiberglass insulation (k = 0.020 Btu/h·ft•°F), and the pipe system is located in an environment at 25°F with a convection heat transfer coefficient of 5 Btu/h·ft²-.°F. Calculate the rate of heat loss from the steam per foot of pipe length neglecting radiation heat transfer with the surroundings. Determine the error involved if neglecting the thermal resistance of the steel pipe in the calculations, e.g. solve the problem assuming the pipe wall were NOT present and compare to the actual system with the wall thickness as an additional resistance.

Energy Balances and Insulation - Steam at 400°F is flowing through a steel pipe (k = 8.7 Btu/h•ft•°F) with an inner diameter of 4.5 in and an outer diameter of 5.0 in. The convection heat transfer coefficient on the inside of the pipe is 40 Btu/h•ft2.°F. The pipe is insulated with a 2-in thick layer of fiberglass insulation (k = 0.020 Btu/h·ft•°F), and the pipe system is located in an environment at 25°F with a convection heat transfer coefficient of 5 Btu/h·ft²-.°F. Calculate the rate of heat loss from the steam per foot of pipe length neglecting radiation heat transfer with the surroundings. Determine the error involved if neglecting the thermal resistance of the steel pipe in the calculations, e.g. solve the problem assuming the pipe wall were NOT present and compare to the actual system with the wall thickness as an additional resistance.

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
Energy Balances and Insulation - Steam at 400°F is flowing through a steel pipe (k = 8.7 Btu/h•ft•°F) with an inner diameter of 4.5 in and an outer diameter of 5.0 in. The convection heat transfer coefficient on the inside of the pipe is 40 Btu/h•ft2.°F. The pipe is insulated with a 2-in thick layer of fiberglass insulation (k = 0.020 Btu/h·ft•°F), and the pipe system is located in an environment at 25°F with a convection heat transfer coefficient of 5 Btu/h·ft²-.°F. Calculate the rate of heat loss from the steam per foot of pipe length neglecting radiation heat transfer with the surroundings. Determine the error involved if neglecting the thermal resistance of the steel pipe in the calculations, e.g. solve the problem assuming the pipe wall were NOT present and compare to the actual system with the wall thickness as an additional resistance.
Transcribed Image Text:Energy Balances and Insulation - Steam at 400°F is flowing through a steel pipe (k = 8.7 Btu/h•ft•°F) with an inner diameter of 4.5 in and an outer diameter of 5.0 in. The convection heat transfer coefficient on the inside of the pipe is 40 Btu/h•ft2.°F. The pipe is insulated with a 2-in thick layer of fiberglass insulation (k = 0.020 Btu/h·ft•°F), and the pipe system is located in an environment at 25°F with a convection heat transfer coefficient of 5 Btu/h·ft²-.°F. Calculate the rate of heat loss from the steam per foot of pipe length neglecting radiation heat transfer with the surroundings. Determine the error involved if neglecting the thermal resistance of the steel pipe in the calculations, e.g. solve the problem assuming the pipe wall were NOT present and compare to the actual system with the wall thickness as an additional resistance.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 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