LMTD for evaporators & condensers for a given terminal parameters & set of conditions for counter-flow 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.

Question

Quizplus · Accepted Answer

In heat exchangers where one of the fluids is condensing or evaporating, the temperature of that fluid remains constant. Therefore, the Log Mean Temperature Difference (LMTD) for such a system is the same regardless of whether the flow is parallel, counter, or mixed. Consequently, the surface area required for heat exchange does not depend on the flow configuration in these specific cases.

LMTD for Evaporators & Condensers for a Given Terminal Parameters