Chemical Engineering - Heat Transfer - Discussion

Discussion Forum : Heat Transfer - Section 1 (Q.No. 43)
43.
The heat flux (from outside to inside) across an insulating wall with thermal conductivity, K= 0.04 W/m.°K and thickness 0.16m is 10 W/m2. The temperature of the inside wall is - 5°C. The outside wall temperature is
25°C
30°C
35°C
40°C
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
15 comments Page 2 of 2.

Sushil rajoria said:   1 decade ago
How you keep dt = (T+5) in presence of (T-5).

Dipak Gund said:   5 years ago
dT = T2 -(-5) =T2 + 5.
So, the answer is 35.

Biswaranjan said:   6 years ago
@Khalid.

How you got the q value as 10?

Mahindra said:   10 years ago
The answer is 45 degree C.

Shankar said:   6 years ago
Here Q=-kdt/dx.


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