The distance term for a flat plate composite wall is del X. Is the distance term for a cylindrical pipe del r? ANS:______
The distance term for a flat plate composite wall is del X. Is the distance term for a cylindrical pipe del r? ANS:______
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 distance term for a flat plate composite wall is del X. Is the distance term for a cylindrical pipe del r? ANS:______
Expert Solution

Step 1
A flat composite wall is assumed to have three layers and each layer is made of the different material with heat conductivities kA, kB and kC, respectively. The thickness of each layer is ΔA, ΔB and ΔC, respectively. The area of cross-section is denoted by A and the temperatures at the outer surface of 1st and 3rd wall is T1 and T2, respectively. The equation of the heat transfer for the flat composite wall is:
Step 2
The distance term in the flat plate composite wall is denoted by Δx.
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