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If the Nusselt Number for the jacket side is calculated then what is the definition of Dj? NNu = Nusselt number of jacket fluid = (hJ * DJ / kJ).

If the Nusselt Number for the jacket side is calculated then what is the definition of Dj? NNu = Nusselt number of jacket fluid = (hJ * DJ / kJ). Correct Answer Equivalent cross flow diameter of the jacket

The term Dj stands for the equivalent cross flow diameter of the jacket which is slightly greater than the vessel diameter and is equal to the closed surface transferring heat.

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