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 2, Problem 2.37P
(a)
To determine
The expression for the conduction heat fluxes at the rear and front surfaces.
(b)
To determine
The expression for
(c)
To determine
The expression for the arte of radiation absorption in entire material per unit surface area.
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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
Show detailed step by step solution.
Topic: Thermodynamics
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 2 Solutions
Introduction to Heat Transfer
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