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?

(0.8)0.5

0.9

0.8

1

(0.8)0.5

0.9

0.8

1

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Process Equipment and Plant Design
Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency

Increases

Remains same

Decreases

May increase or decrease depending upon the plate spacing

Increases

Remains same

Decreases

May increase or decrease depending upon the plate spacing

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Process Equipment and Plant Design
A pipe is generally made of circular cross-section, because a circular cross-section has the

None of these

Both A & B

Lowest surface area requirement for a given volume

Higher structural strength

None of these

Both A & B

Lowest surface area requirement for a given volume

Higher structural strength

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Process Equipment and Plant Design
Optimum reflux ratio in a continuous distillation column is determined by the

Total cost consideration (fixed cost of the column plus the cooling water & steam cost)

Flooding limit of the column

None of these

Maximum permissible vapour velocity

Total cost consideration (fixed cost of the column plus the cooling water & steam cost)

Flooding limit of the column

None of these

Maximum permissible vapour velocity

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Process Equipment and Plant Design
What is the value of 'q' for saturated liquid feed to a distillation column?

1

>1

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Process Equipment and Plant Design
Commercial packed scrubbers are normally designed for a pressure drop range of __________ mm water coloumn per metre of packed height.

88-105

17-34

43929

52-68

88-105

17-34

43929

52-68

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Process Equipment and Plant Design

Process Equipment and Plant Design Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency

Process Equipment and Plant Design A pipe is generally made of circular cross-section, because a circular cross-section has the

Process Equipment and Plant Design Optimum reflux ratio in a continuous distillation column is determined by the

Process Equipment and Plant Design What is the value of 'q' for saturated liquid feed to a distillation column?

Process Equipment and Plant Design Commercial packed scrubbers are normally designed for a pressure drop range of __________ mm water coloumn per metre of packed height.

Process Equipment and Plant Design
Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency

Process Equipment and Plant Design
A pipe is generally made of circular cross-section, because a circular cross-section has the

Process Equipment and Plant Design
Optimum reflux ratio in a continuous distillation column is determined by the

Process Equipment and Plant Design
What is the value of 'q' for saturated liquid feed to a distillation column?

Process Equipment and Plant Design
Commercial packed scrubbers are normally designed for a pressure drop range of __________ mm water coloumn per metre of packed height.