Chemical Engineering - Heat Transfer - Discussion

Discussion Forum : Heat Transfer - Section 10 (Q.No. 33)
33.
The critical radius of insulation for a spherical shell is (where, K = thermal conductivity of insulating material h0 = heat transfer coefficient at the outer surface)
K/h0
2K/h0
h0/K
h0/2K
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
3 comments Page 1 of 1.

Chayanika said:   2 years ago
Cylinder - k(in)/h(o).
Sphere - 2K(in)/ho.
(1)

Kiran Jaybhaye said:   3 years ago
For cylindrical Shells = h0/K.

For spherical shells = 2K/h0.

Sanjeev kumar sharma said:   6 years ago
How? please explain.

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