Pick out the wrong statement.

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Pick out the wrong statement.

Options:

A . Superheated steam is preferably not used for process heating because of its low heat transfer film co-efficient

B . In a shell and tube heat exchanger, the shell pressure drop is maximum for orifice baffles

C . S.I. unit of fouling factor is Watt/m².°K

D . 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 C

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Question 1. The equivalent diameter for the annulus of a double pipe heat exchanger, whose inner pipe has fins on the outside is ___....is __________ compared to the same size pipes without fins.

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Question 5. If all the conditions and dimensions are same, then the ratio of velocity through the tubes of a double pass heat exchan....exchanger to that through the single pass heat exchanger is

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