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Chemical Engineering - Heat Transfer - Discussion

Discussion Forum : Heat Transfer - Section 5 (Q.No. 6)
Heat Transfer
6.
Pick out the wrong statement.
Superheated steam is preferably not used for process heating because of its low heat transfer film co-efficient.
In a shell and tube heat exchanger, the shell pressure drop is maximum for orifice baffles.
S.I. unit of fouling factor is Watt/m2.°K.
Longitudinal fins are used in extended surface heat exchangers, when the direction of fluid flow is parallel to the axis of the tube.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
2 comments Page 1 of 1.
Deepak kumar said:   5 years ago
Fouling factor Rd is directly inversely proportional to the overall heat transfer coefficient.
Ramakanth Reddy said:   10 years ago
Option C is wrong because fouling factor is given by:

Rf = (1/Ud)-(1/U).

And you has units of Watt/m^2K.

Therefore Unit of fouling factor is m^2 K/W.
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