Process Equipment and Plant Design
Heat transfer co-efficient, hG(Kcal/hr.m² .°C) and mass velocity of air, G (kg/hr.m² ) for air flow parallel to the surface in case of constant drying rate in batch drying is related as hG = 0.0176G0.8. But when the flow of air perpendicular to the surface is encountered, this equation changes to

0.0176G1.37
1.004G0.8
HG = 0.0176G0.37
HG = 1.004G0.37

ANSWER DOWNLOAD EXAMIANS APP

Process Equipment and Plant Design
Vertical condenser is advantageous to the horizontal condenser from operation point of view, when

Hydrostatic head is required for refluxing the condensate
Sub cooling of condensate is desired
Only the function of condensation is to be carried out
Both the functions of condensation & sub cooling are carried out in a single unit

ANSWER DOWNLOAD EXAMIANS APP