Q4) Consider a 20-cm-thick large concrete plane wall (k = 27°C and h1 = 5 W/m². 12 W/m² °C on the °C) subjected to convection on both sides with Tool °C onthe inside, and T2 = 8°C and h₂ outside. Assumingconstant thermal conductivity with no heat generation and negligible radiation, (a)express the differential equations and the boundary conditions for steady one-dimensional heat conduction through the wall, (b) obtain a relation for thevariation of temperature in the wall by solving the differential equation, and (c) evaluate the temperatures at the inner and outer surfaces of the wall. = . = 0.77 W/m.
Q4) Consider a 20-cm-thick large concrete plane wall (k = 27°C and h1 = 5 W/m². 12 W/m² °C on the °C) subjected to convection on both sides with Tool °C onthe inside, and T2 = 8°C and h₂ outside. Assumingconstant thermal conductivity with no heat generation and negligible radiation, (a)express the differential equations and the boundary conditions for steady one-dimensional heat conduction through the wall, (b) obtain a relation for thevariation of temperature in the wall by solving the differential equation, and (c) evaluate the temperatures at the inner and outer surfaces of the wall. = . = 0.77 W/m.
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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Transcribed Image Text:Q 4) Consider a 20-cm-thick large concrete plane wall (k
°C) subjected to convection on both sides with T
°C onthe inside, and T2 = 8°C and h₂
outside. Assumingconstant thermal conductivity with no heat generation and
negligible radiation, (a)express the differential equations and the boundary
conditions for steady one-dimensional heat conduction through the wall, (b)
obtain a relation for thevariation of temperature in the wall by solving the
differential equation, and (c) evaluate the temperatures at the inner and outer
surfaces of the wall.
=
=
=
0.77 W/m
27°C and hl =
.
5 W/m².
12 W/m² °C on the
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