Process Equipment and Plant Design Questions

• Factor of safety (i.e., overdesign factor) in heat transfer equipments is about __________ percent more than the actual/theoretical design factor.
• Pick out the wrong statement
• In a bag filter, the pressure drop increases directly as the
• In a distillation column, bubble caps are located on trays with a pitch of __________ times the outside diameter of the caps.
• In a shell and tube heat exchanger, triangular pitch arrangement as compared to square pitch arrangement
• Which of the following is the best tube material from thermal conductivity point of view alone?
• Ratio of tube length to shell diameter for a shell and tube heat exchanger is
• For a given fluid, as the pipe diameter increases, the pumping cost
• Hole diameter of the seive trays in the distillation column ranges from __________ mm.
• Value of Peclet number = ∞, is the representative of
• In a rotary drier, the average retention time of solid is(where Z = length of the drier, metres ρ = apparent solid density, kg/m3 L = flow rate of dry solids, kg/see. m2 drier cross-section H = hold up of solid.)
• The dust collection efficiency of electrostatic precipitator increases with increase in the
• Shortest distance between two tubes is
• In the design of a bag filter, the gas temperature is an important consideration, as it affects the
• Tube side heat transfer co-efficient for turbulent flow of liquid through tubes is proportional to
• Pick out the correct statement.
• __________ dished head is the strongest of all.
• In the design of a shell and tube heat exchanger, the corrosion allowance
• Flanges are connected to pipes by
• __________ shaped roof is most commonly used for cylindrical tanks.