The actual temperature drop across the heating surface in an evaporator depends on the
A)Feed
B)Depth of liquid over heating surface
C)Pressure difference between steam chest and vapour space
D)All (A), (B) and (C)

Question

Quizplus · Accepted Answer

The actual temperature drop across the heating surface in an evaporator is influenced by the characteristics of the feed (such as its thermal properties), the depth of liquid over the heating surface (which affects heat transfer rates), and the pressure difference between the steam chest and vapour space (which impacts the boiling point and thus the temperature gradient).

The Actual Temperature Drop Across the Heating Surface in an Evaporator