Introduction to Heat Transfer
6th Edition
ISBN: 9780470501962
Author: Frank P. Incropera, David P. DeWitt, Theodore L. Bergman, Adrienne S. Lavine
Publisher: Wiley, John & Sons, Incorporated
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Chapter 3, Problem 3.29P
(a)
To determine
The heat transfer through a wall.
(b)
To determine
The plot for temperature distribution within wall.
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Students have asked these similar questions
under steady-state conditions. If you are given T1 = 200 °C and T2 = 164 °C, determine:
a) the conduction heat flux, q,.cond, in
m2
W
from x = 0 to x = L
b) if the dimensions of the triangle ares 15 mm and h 13 mm, calculate the heat
transfer due to convection, q,y, in W at x = L
Finsulation
T2
T
T = 20°C
h = 500 W/m2.K
Triangular Prism
x L
x 0
L= 50 mm
k = 100 W/m-K
1. Temperatures are measured at the left-hand face and at a point 4 cm from the left-hand
face of the planar wall shown in the figure below. These temperatures are T₁ = 45.3 °C
and T* = 21.2 °C. The heat flow through the planar wall is steady and one dimensional.
What is the value of T2 at the right-hand surface of the wall?
TI
T*
4 cm
10 cm
T2
Q1/ A thick wall consists two layers of Gypsum, insulation and brick as shown in
figure below. The ambient temperature is 20 °C and heat transfer coefficient is 5
Wim2. K in the left side. The surface temperature of right side is 45 °C. find the
heat losses per meter length. What will happen if the insulation's thickness
* increases by 25%
Gypsum k = 0.04W/m. K
T= 45 °C
h=5 W/m'. K
T = 20 °C
5 cm
Insulation
k=0.04W/m. K
Brick
k=0.69 W/m. K
Chapter 3 Solutions
Introduction to Heat Transfer
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