Consider a composite wall of overall height , H = 20 mm and thickness, L = 30 mm. Section A has thickness LA = 10 mm, and sections B and C each have height HB = 10 mm and thickness LB = 20 mm. The temperatures of the left and right faces of the composite wall are T1 = 50°C and T2 = 20°C, respectively. If the top and bottom of the wall are insulated, determine the heat rate per unit wall depth for each of the following three cases. Which case yields the largest heat rate per unit depth? Which yields the smallest heat rate per unit depth?
Consider a composite wall of overall height , H = 20 mm and thickness, L = 30 mm. Section A has thickness LA = 10 mm, and sections B and C each have height HB = 10 mm and thickness LB = 20 mm. The temperatures of the left and right faces of the composite wall are T1 = 50°C and T2 = 20°C, respectively. If the top and bottom of the wall are insulated, determine the heat rate per unit wall depth for each of the following three cases. Which case yields the largest heat rate per unit depth? Which yields the smallest heat rate per unit depth?
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Question
Consider a composite wall of overall height , H = 20 mm and thickness, L = 30 mm.
Section A has thickness LA = 10 mm, and sections B and C each have height HB =
10 mm and thickness LB = 20 mm. The temperatures of the left and right faces of
the composite wall are T1 = 50°C and T2 = 20°C, respectively. If the top and bottom
of the wall are insulated, determine the heat rate per unit wall depth for each of
the following three cases. Which case yields the largest heat rate per unit depth?
Which yields the smallest heat rate per unit depth?
Transcribed Image Text:Case
1
2
3
T
(W/mK)
1
2
3
A
-L
kg(W/m K) ke(W/m .K)
2
3
3
1
1
2
B
·4²
H₂
H
T₂
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