Chemical Engineering - Heat Transfer - Discussion
Discussion Forum : Heat Transfer - Section 9 (Q.No. 34)
34.
A wall has two layers of materials A and B; each made of a different material. Both the layers have the same thickness. The thermal conductivity of materialA is twice that of B. Under the equilibrium, the temperature difference across the wall is 36°C. The temperature difference across the layer A is __________ °C.
Discussion:
4 comments Page 1 of 1.
AQEEL said:
6 years ago
A+B=36
A=2B.
2B+B=36,
3B=36,
B=12.
A=2B.
2B+B=36,
3B=36,
B=12.
Ajay said:
7 years ago
The thermal conductivity of A is twice that of B.
Therefore thermal resistance of B is twice that of A.
Temp drop across the wall is 36°c.
Let thermal resistance of A is X.
Then for B it is 2X,
X+2X=36, 3X=36,
X=12. Answer B.
Therefore thermal resistance of B is twice that of A.
Temp drop across the wall is 36°c.
Let thermal resistance of A is X.
Then for B it is 2X,
X+2X=36, 3X=36,
X=12. Answer B.
Sanju said:
7 years ago
Explain it please.
(1)
Dhruv said:
9 years ago
Can anyone explain it? Please.
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