Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning - Discussion

Discussion Forum : Heat Transfer, Refrigeration and Air Conditioning - Section 7 (Q.No. 36)
36.
A furnace is made of a red brick wall of thickness 0.5 m and conductivity 0.7 W/mK. For the same heat loss and temperature drop, this can be replaced by a layer of diatomite earth of conductivity 0.14 W/mK and thickness
0.5 m
0.1 m
0.2 m
0.5 m
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
4 comments Page 1 of 1.

Vikash singh said:   1 decade ago
For thick place homogeneous wall, heat loss = kA dt/dx or 0.7

AMAL said:   10 years ago
k1/x1 = k2/x2,

0.7/0.5 = 0.14/x2,

= 0.07/0.7 = 0.1.

Kalisha said:   9 years ago
Nice @Amal.
(1)

KSRTC said:   5 years ago
k1/x1 = k2/x2,

0.7/0.5 = 0.14/x2,
= 0.07/0.7 = 0.1.
(1)

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