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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Textbook Question
Chapter 3, Problem 3.16P
Work Problem 3.15 assuming surfaces parallel to the x -direction are adiabatic.
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Can you help me with question 3 show all the steps taken.
Fig. 4 illustrates an insulating wall of three homogeneous layers with conductivities k1, k2, and k3 in
intimate contact. Under steady state conditions, both right and left surfaces are exposed to a temperature
in a steady state condition at ambient temperatures of T and T , respectively, while ß, and BLare the
film coefficients respectively. Assume that there is no internal heat generation and that the heat flow is
one-dimensional (dT/dy = 0). For the illustrated ambient temperature in Fig. 4, determine the
temperature's distribution at each layer.
Material 3
Material 1
Material 2
T= 100
T= 35 °C
Kı=20
K3=50 (W/m.k)
K3=30 (W/m.k)
B1= 10 w/m² °K
(W/m.k) BR= 15 w/m²°K
50 mm
35 mm
25 cm
Fig. 4
One more time. PLEASE explain how the integral is formed, dT/dr doesn't make sense. Why we are replacing L with dr? dr is in radial direction and L is in the vertical direction.
Chapter 3 Solutions
Introduction to Heat Transfer
Ch. 3 - Consider the plane wall of Figure 3.1, separating...Ch. 3 - A new building to be located in a cold climate is...Ch. 3 - The rear window of an automobile is defogged by...Ch. 3 - The rear window of an automobile is defogged by...Ch. 3 - A dormitory at a large university, built 50 years...Ch. 3 - In a manufacturing process, a transparent film is...Ch. 3 - Prob. 3.7PCh. 3 - A t=10-mm-thick horizontal layer of water has a...Ch. 3 - Prob. 3.9PCh. 3 - The wind chill, which is experienced on a cold,...
Ch. 3 - Prob. 3.11PCh. 3 - A thermopane window consists of two pieces of...Ch. 3 - A house has a composite wall of wood, fiberglass...Ch. 3 - Prob. 3.14PCh. 3 - Prob. 3.15PCh. 3 - Work Problem 3.15 assuming surfaces parallel to...Ch. 3 - Consider the oven of Problem 1.54. 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