Chemical Engineering - Heat Transfer - Discussion
Discussion Forum : Heat Transfer - Section 3 (Q.No. 2)
2.
If average heat transfer co-efficient is ha and the local coefficient at the end of the plate is hl then in case of heat transfer to a fluid flowing over a flat plate, heated over its entire length
Discussion:
3 comments Page 1 of 1.
Divyesh said:
8 years ago
Can any one explain?
Onkar J. Kupkar said:
8 years ago
It's the concept of Laminar flow heat transfer to a flat plate, i.e. for local value of H.T.C., At distance X from the leading edge.
Nnu=0.332*Npr ^1/3*Nre^1/2 and for average value of H.T.C. Nnu=0.664*Npr^1/3*Nre^1/2, hence ha=2 hl.
Nnu=0.332*Npr ^1/3*Nre^1/2 and for average value of H.T.C. Nnu=0.664*Npr^1/3*Nre^1/2, hence ha=2 hl.
(2)
Dipankar Kakati said:
7 years ago
Correct @Onkar.
Because Nusselt Number is proportional to the conductive heat transfer co-efficient.
Because Nusselt Number is proportional to the conductive heat transfer co-efficient.
(1)
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