For a cylinderical vessel of moderate height, the weld joint efficiency for joints parallel to the cylinderical axis is given as 1.0, while for joints along the girth (circumference) it is given as 0.8. In calculating the shell wall thickness using code formula for an internally pressurised cylinderical vessel, what value of weld joint efficiency should be used?

Process Equipment and Plant Design
For a cylinderical vessel of moderate height, the weld joint efficiency for joints parallel to the cylinderical axis is given as 1.0, while for joints along the girth (circumference) it is given as 0.8. In calculating the shell wall thickness using code formula for an internally pressurised cylinderical vessel, what value of weld joint efficiency should be used?

1

0.8

0.9

(0.8)0.5

1

0.8

0.9

(0.8)0.5

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Process Equipment and Plant Design
With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the __________ decreases.

Vapour & liquid load both

Fixed charges initially

Running cost of cooling water for condenser

Running cost of steam for reboiler

Vapour & liquid load both

Fixed charges initially

Running cost of cooling water for condenser

Running cost of steam for reboiler

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Process Equipment and Plant Design
Stage efficiency for packed tower varies with the

Fluid rates and fluid properties

All of these

Type & size of packing

Operating pressure and column diameter

Fluid rates and fluid properties

All of these

Type & size of packing

Operating pressure and column diameter

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Process Equipment and Plant Design
In a shell and tube heat exchanger for a given heat transfer surface area, smaller diameter tubes are favoured as compared to larger diameter ones ; because the smaller diameter tubes

Are easier to clean

Can be fitted into a smaller shell diameter hence the cost of the heat exchanger would be less

Are less prone to fouling

None of these

Are easier to clean

Can be fitted into a smaller shell diameter hence the cost of the heat exchanger would be less

Are less prone to fouling

None of these

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Process Equipment and Plant Design
Rate of filtrate delivery is inversely proportional to the

Viscosity of filtrate

Filtering area & the pressure difference driving force

Both A & B

Cake & filter medium resistance

Viscosity of filtrate

Filtering area & the pressure difference driving force

Both A & B

Cake & filter medium resistance

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Process Equipment and Plant Design
Equivalent diameter for heat transfer calculation for a duct of square cross-section having each side as 'd' will be

D

√(2d)

√d

√(2πd)

D

√(2d)

√d

√(2πd)

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Process Equipment and Plant Design

Process Equipment and Plant Design With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the __________ decreases.

Process Equipment and Plant Design Stage efficiency for packed tower varies with the

Process Equipment and Plant Design In a shell and tube heat exchanger for a given heat transfer surface area, smaller diameter tubes are favoured as compared to larger diameter ones ; because the smaller diameter tubes

Process Equipment and Plant Design Rate of filtrate delivery is inversely proportional to the

Process Equipment and Plant Design Equivalent diameter for heat transfer calculation for a duct of square cross-section having each side as 'd' will be

Process Equipment and Plant Design
With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the __________ decreases.

Process Equipment and Plant Design
Stage efficiency for packed tower varies with the

Process Equipment and Plant Design
In a shell and tube heat exchanger for a given heat transfer surface area, smaller diameter tubes are favoured as compared to larger diameter ones ; because the smaller diameter tubes

Process Equipment and Plant Design
Rate of filtrate delivery is inversely proportional to the

Process Equipment and Plant Design
Equivalent diameter for heat transfer calculation for a duct of square cross-section having each side as 'd' will be