An increase in the liquid resistance to interphase mass transfer and a resultant reduction in plate efficiency is caused by

Process Equipment and Plant Design
An increase in the liquid resistance to interphase mass transfer and a resultant reduction in plate efficiency is caused by

All of these

An increase in liquid viscosity

Decrease in gas solubility for absorbers

An increase in relatived volatility for rectification columns

All of these

An increase in liquid viscosity

Decrease in gas solubility for absorbers

An increase in relatived volatility for rectification columns

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Process Equipment and Plant Design
In a shell and tube heat exchanger, the 'tube pitch' is defined as the

None of these

Shortest centre to centre distance between adjacent tubes

O.D. of the tube for square pitch

Shortest distance between two adj acent tube holes

None of these

Shortest centre to centre distance between adjacent tubes

O.D. of the tube for square pitch

Shortest distance between two adj acent tube holes

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Process Equipment and Plant Design
In case of a continuous distillation column, increase in reflux ratio may result in the

Lower fixed charges for the column

All of these

Greater cost for the reboiler heat supply

Greater cost for the condenser coolant

Lower fixed charges for the column

All of these

Greater cost for the reboiler heat supply

Greater cost for the condenser coolant

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Process Equipment and Plant Design
Steam is preferred to be used as a heating medium in heat exchangers, because of its

High film co-efficient

Low cost

High latent heat

Non-corrosive condensate

High film co-efficient

Low cost

High latent heat

Non-corrosive condensate

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

Density of the fluid

None of these

Total cost considerations (pumping cost plus fixed cost of the pipe)

Viscosity of the fluid

Density of the fluid

None of these

Total cost considerations (pumping cost plus fixed cost of the pipe)

Viscosity of the fluid

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Process Equipment and Plant Design
Overall distillation column efficiency for most of the refinery columns can be given by (for μ = 0.07 - 1.4 cp and relative volatility < 4) (where η = overall column efficiency, % μ = molal average viscosity of feed at average column temperature and pressure, cp Δp = pressure drop per tray, psi)

Η = 1.66 - 0.25 log μ

Η = 0.25 log μ - 1.67

Η = 24.6 (Δp/μ)

Η = 17 - 61.1 log μ

Η = 1.66 - 0.25 log μ

Η = 0.25 log μ - 1.67

Η = 24.6 (Δp/μ)

Η = 17 - 61.1 log μ

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Process Equipment and Plant Design

Process Equipment and Plant Design An increase in the liquid resistance to interphase mass transfer and a resultant reduction in plate efficiency is caused by

Process Equipment and Plant Design In a shell and tube heat exchanger, the 'tube pitch' is defined as the

Process Equipment and Plant Design In case of a continuous distillation column, increase in reflux ratio may result in the

Process Equipment and Plant Design Steam is preferred to be used as a heating medium in heat exchangers, because of its

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

Process Equipment and Plant Design
An increase in the liquid resistance to interphase mass transfer and a resultant reduction in plate efficiency is caused by

Process Equipment and Plant Design
In a shell and tube heat exchanger, the 'tube pitch' is defined as the

Process Equipment and Plant Design
In case of a continuous distillation column, increase in reflux ratio may result in the

Process Equipment and Plant Design
Steam is preferred to be used as a heating medium in heat exchangers, because of its

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