Compute the heat transfer through the composite wall as shown in the Figure below. Consider materials of your choice from table below. Surface area of B & D is half of A & C. Show detailed solution using a) heat transfer analysis by thermal conductivity b) heat transfer analysis by thermal resistivity
Compute the heat transfer through the composite wall as shown in the Figure below. Consider materials of your choice from table below. Surface area of B & D is half of A & C. Show detailed solution using a) heat transfer analysis by thermal conductivity b) heat transfer analysis by thermal resistivity
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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Transcribed Image Text:Compute the heat transfer through the composite wall as shown in the Figure below.
Consider materials of your choice from table below. Surface area of B & D is half of A & C.
Show detailed solution using a) heat transfer analysis by thermal conductivity
b) heat transfer analysis by thermal resistivity
Q
T=370°C
2.5 cm
Materials
Brick Veneer
Re-inforced concrete
Timber
Single glass window
External rendering
Tile concrete
Cast concrete slab
Expanded polystyrene
Polyurethane rigid foam
Sisalation foil
Plasterboard
B
D
7.5 cm
0.50
0.15
C
Thermal conductivity
(W/m.K)
0.80
0.65
0.25
0.84
1.13
0.034
0.023
0.035
0.25
5.0 cm
Ą.= 0.1 m²
T=66°C
Thermal resistance
(m².K/W)
1.25
2.00
6.67
1.53
4.00
1.19
0.88
29.41
38.00
28.57
4.00
Density
(kg/m³)
1700
1400
650
2500
1300
1900
2200
24
32
25
950
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