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Process Equipment and Plant Design

Process Equipment and Plant Design
__________ is the determining factor for the number of bubble caps to be used per tray.

Tray diameter
Liquid load
Vapor load
Permissible slot velocity

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Process Equipment and Plant Design
The absorption factor is defined as (where, S₁ = slope of the equilibrium curve, S₂ = slope of the operating line)

S₂/S₁
S₁/S₂
S₁.S₂
1/S₁.S₂

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Process Equipment and Plant Design
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.)

Z.H/L.ρ
H.ρ/L
L/Z.H.ρ
Z.H.ρ/L

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Process Equipment and Plant Design
Optimum economic pipe diameter for fluid flow is determined by the

Total cost considerations (pumping cost plus fixed cost of the pipe)
Density of the fluid
None of these
Viscosity of the fluid

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Process Equipment and Plant Design
Reflux ratio variation in a distillation column is between

Zero and infinity
Minimum and infinity
Zero and one
None of these

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Process Equipment and Plant Design
In case of 1.5" heat exchanger tubes, the inside flow area __________ with decrease in BWG.

None of these
Decreases
Increases
Remains same

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