Heat Transfer MCQs

Thermal diffusivity is the most important in heat transfer by

Tube expansion allowances exist in __________ heat exchanger.

In case of a shell and tube heat exchanger, the minimum and maximum baffle spacing is respectively (where, D = inside diameter of the shell)

Mode of heat transfer involved in the cooling of air cooled internal combustion engine is

Pick out the wrong statement.

Economy of a multiple effect evaporator is not influenced much by the

Heat transfer co-efficient equation for forced convection, Nu = 0.023 Re0.8 . Prn, is not valid, if the value of

LMTD for evaporators & condensers for a given terminal parameters & set of conditions for counterflow is equal to that for parallel flow. In such heat exchangers, with one of the fluids condensing or evaporating, the surface area required is the least in the __________ flow.

In evaporators, lowering the feed temperature