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Heat Transfer

Q1: 'Fouling factor' used in the design of a multipass shell and tube heat exchanger is a

A non-dimensional factor.

B factor of safety.

C conversion factor for individual film heat transfer co-efficient to overall heat transfer co-efficient.

D none of these.

ANS:B - factor of safety.

The 'fouling factor' used in the design of a multipass shell and tube heat exchanger is a non-dimensional factor. Fouling refers to the accumulation of unwanted material on heat transfer surfaces, which reduces the effectiveness of heat transfer. The fouling factor accounts for this reduction in heat transfer efficiency and is typically expressed as a non-dimensional factor that represents the ratio of the clean overall heat transfer coefficient to the overall heat transfer coefficient with fouling. Therefore, the correct option is: non-dimensional factor.



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