The heat transfer coefficient for rising film and falling film evapora – McqOptions

MCQOPTIONS

1.	The heat transfer coefficient for rising film and falling film evaporators is same because they can be used in the same setup.
A.	True
B.	False
Answer» C.

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The heat transfer coefficient for rising film and falling film evaporators is same because they can be used in the same setup.
If the evaporator operates at very high liquid velocity so that the boiling occurs at the top end of the tube, then we use the given relation.<br>h<sub>i</sub>D K=0.0278 Re<sup>0.8</sup> Pr<sup>0.4</sup>