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Fouling factor is used

Fouling factor is used Correct Answer In heat exchanger design as a safety factor

The fouling factor represents the theoretical resistance to heat flow due to a build-up of a layer of dirt or other fouling substance on the tube surfaces of the heat exchanger

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Fouling factor must be included in the calculation of over all design heat transfer coefficient, when the liquid
Fouling factor
In SI units, fouling factor is expressed in