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(iii) Derive an equation for heat conduction through a composite wall consisting of three layers inner surface of the wall is subjected to hot gas at temperature Thand convective heat transfer coefficient of hh, outer surface of the composite wall is subjected to air at a temperature ofTe and convective heat transfer he. surface temperatures of the wall are T1,T2,T3, T4 and thermal conductivity of the layers are Kı, K2, K3 and thickness of the walls as L1, L2 and L3 respectively. Consider the area of composite wall as A m?. Draw the composite wall and also show the equivalent electrical circuit diagram with thermal resistance.

(iii) Derive an equation for heat conduction through a composite wall consisting of three layers inner surface of the wall is subjected to hot gas at temperature Thand convective heat transfer coefficient of hh, outer surface of the composite wall is subjected to air at a temperature ofTe and convective heat transfer he. surface temperatures of the wall are T1,T2,T3, T4 and thermal conductivity of the layers are Kı, K2, K3 and thickness of the walls as L1, L2 and L3 respectively. Consider the area of composite wall as A m?. Draw the composite wall and also show the equivalent electrical circuit diagram with thermal 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
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(111 Derive an equation for heat conduction through a composite wall consisting of three layers inner surface of the wall is subjected to hot gas at temperature Th and convective heat transfer coefficient of hh, outer surface of the composite wall is subjected to air at a temperature of Te and convective heat transfer h,. surface temperatures of the wall are T1,T2,T3,T4 and thermal conductivity of the layers are Kı, K2, K3 and thickness of the walls as L1, L2 and L3 respectively. Consider the area of composite wall as A m². Draw the composite wall and also show the equivalent electrical circuit diagram with thermal resistance. a
Transcribed Image Text:(111 Derive an equation for heat conduction through a composite wall consisting of three layers inner surface of the wall is subjected to hot gas at temperature Th and convective heat transfer coefficient of hh, outer surface of the composite wall is subjected to air at a temperature of Te and convective heat transfer h,. surface temperatures of the wall are T1,T2,T3,T4 and thermal conductivity of the layers are Kı, K2, K3 and thickness of the walls as L1, L2 and L3 respectively. Consider the area of composite wall as A m². Draw the composite wall and also show the equivalent electrical circuit diagram with thermal resistance. a
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