31.
Overall tray efficiency of a distillation column is the ratio of the number of

32.
Wind load consideration in the design of a support can be neglected, when the vessel is

33.
Vertical condenser is advantageous to the horizontal condenser from operation point of view, when

35.
In a shell and tube heat exchanger having square pitch, the shell side equivalent diameter is given by (where, P = pitch, d = outside diameter of the tube)