Tubes are fixed to the tube sheet (a thick circular metallic plate) by the method of tube rolling and brazing (non-removable) or ferrule connection (removable). Thickness of the tube, sheet is normally __________ the outside diameter of the tube but in no case it should be less than 22 mm (7/8").

Process Equipment and Plant Design
Tubes are fixed to the tube sheet (a thick circular metallic plate) by the method of tube rolling and brazing (non-removable) or ferrule connection (removable). Thickness of the tube, sheet is normally __________ the outside diameter of the tube but in no case it should be less than 22 mm (7/8").

Equal to

Three fourth

Half

1.5 times

Equal to

Three fourth

Half

1.5 times

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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

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

All of these

An increase in liquid viscosity

Decrease in gas solubility for absorbers

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Process Equipment and Plant Design
The stress developed in a material without any permanent set is called the

Ultimate stress

Elastic limit

Yield stress

Breaking stress

Ultimate stress

Elastic limit

Yield stress

Breaking stress

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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 latent heat

Non-corrosive condensate

High film co-efficient

Low cost

High latent heat

Non-corrosive condensate

High film co-efficient

Low cost

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Process Equipment and Plant Design
Height of the flights in the rotary drier is in the range of

0.02 to 0.05 d

0.5 to 0.6 d

0.08 to 0.12 d

0.2 to 0.5 d

0.02 to 0.05 d

0.5 to 0.6 d

0.08 to 0.12 d

0.2 to 0.5 d

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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

HG = 0.0176G0.37

0.0176G1.37

1.004G0.8

HG = 1.004G0.37

HG = 0.0176G0.37

0.0176G1.37

1.004G0.8

HG = 1.004G0.37

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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 The stress developed in a material without any permanent set is called 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 Height of the flights in the rotary drier is in the range of

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
The stress developed in a material without any permanent set is called 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
Height of the flights in the rotary drier is in the range of