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?

0.9

0.8

1

(0.8)0.5

0.9

0.8

1

(0.8)0.5

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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

None of these

Are less prone to fouling

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

Are easier to clean

None of these

Are less prone to fouling

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

Are easier to clean

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Process Equipment and Plant Design
For storing hazardous chemicals in large storage tanks, the minimum safe distance between the two tanks should range between __________ times the tank diameter.

1 to 1.5

2.5 to 3.5

4 to 5

6 to 8

1 to 1.5

2.5 to 3.5

4 to 5

6 to 8

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Process Equipment and Plant Design
In a bag filter, the pressure drop increases directly as the

Density of the gas and inversely as viscosity of the gas

Density of the gas, but is independent of the viscosity of the gas

None of these

Viscosity of the gas and inversely as density of the gas

Density of the gas and inversely as viscosity of the gas

Density of the gas, but is independent of the viscosity of the gas

None of these

Viscosity of the gas and inversely as density of the gas

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Process Equipment and Plant Design
The dust collection efficiency of electrostatic precipitator increases with increase in the

Gas flow rate

Neither A nor B

Both A & B

Electrode area

Gas flow rate

Neither A nor B

Both A & B

Electrode area

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Process Equipment and Plant Design
At the following point for a given packing and set of fluids, the pressure drop per metre of packed height, with variation in fluid rates and operating pressure

Decreases

May increase or decrease depending upon the solubility of the gas in the liquid

Increases

Remains same

Decreases

May increase or decrease depending upon the solubility of the gas in the liquid

Increases

Remains same

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Process Equipment and Plant Design

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 For storing hazardous chemicals in large storage tanks, the minimum safe distance between the two tanks should range between __________ times the tank diameter.

Process Equipment and Plant Design In a bag filter, the pressure drop increases directly as the

Process Equipment and Plant Design The dust collection efficiency of electrostatic precipitator increases with increase in the

Process Equipment and Plant Design At the following point for a given packing and set of fluids, the pressure drop per metre of packed height, with variation in fluid rates and operating pressure

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
For storing hazardous chemicals in large storage tanks, the minimum safe distance between the two tanks should range between __________ times the tank diameter.

Process Equipment and Plant Design
In a bag filter, the pressure drop increases directly as the

Process Equipment and Plant Design
The dust collection efficiency of electrostatic precipitator increases with increase in the

Process Equipment and Plant Design
At the following point for a given packing and set of fluids, the pressure drop per metre of packed height, with variation in fluid rates and operating pressure