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

Discussion Forum : Heat Transfer, Refrigeration and Air Conditioning - Section 4 (Q.No. 20)
20.
The critical thickness of insulation is the ratio of thermal conductivity of the insulating material (k) to the heat transfer coefficient at the outer surface of the insulation (h0).
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
4 comments Page 1 of 1.

BJN said:   5 years ago
I think here, the question should be "critical radius of insulation".

Waseem said:   8 years ago
Yes, for sphere it's 2k/h.

Waseem said:   8 years ago
Yes, for sphere it's k/h^2.

Anik said:   1 decade ago
Only for cylinders.

Post your comments here:

Your comments will be displayed after verification.