Chemical Engineering - Heat Transfer - Discussion

Discussion Forum : Heat Transfer - Section 11 (Q.No. 16)
16.
In Biot number, the characteristic length used is the ratio of the __________ of the solid.
volume to surface area
perimeter to surface area
surface area to volume
surface area to perimeter
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
3 comments Page 1 of 1.

Nandini said:   5 years ago
Biot number is the ratio of internal conductive resistance(l/KA) to that of convective thermal resistance (1/hA).

Bi= hlc/K.
where lc is the characteristic length.

Manohar said:   6 years ago
What is a biot number can anyone?

Freemandgeni said:   7 years ago
At volume divided by Area gives length.

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