In a double pipe (concentric) heat exchanger, the hydraulic radius for heat transfer (for a fluid flowing through the annulus) would be

Process Equipment and Plant Design
In a double pipe (concentric) heat exchanger, the hydraulic radius for heat transfer (for a fluid flowing through the annulus) would be

Less than that for fluid flow

More than that for fluid flow

D₂ - D₁ (D₁ and D₂ are I.D. of inner and outer pipes respectively)

Same as that for fluid flow

Less than that for fluid flow

More than that for fluid flow

D₂ - D₁ (D₁ and D₂ are I.D. of inner and outer pipes respectively)

Same as that for fluid flow

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Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of a long tube vertical evaporator.

Steam is fed to the shell, whereas the liquor is filled inside the tube

Liquor level is maintained at l/3rd to 1/2 of the height of the tube

None of these

Tube dia is 3-6 cms, while tube length in 3-6 metres

Steam is fed to the shell, whereas the liquor is filled inside the tube

Liquor level is maintained at l/3rd to 1/2 of the height of the tube

None of these

Tube dia is 3-6 cms, while tube length in 3-6 metres

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Process Equipment and Plant Design
In case of a 'thin' pressure vessel, the ratio of its diameter to wall thickness is

> 20

> 10

< 10

30

> 20

> 10

< 10

30

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Process Equipment and Plant Design
__________ head is the most economical for cylindrical vessels designed for operating at high pressure (> 15 atm.).

Ellipsoidal

Conical

Hemispherical

Dished

Ellipsoidal

Conical

Hemispherical

Dished

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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

√(2πd)

√(2d)

√d

D

√(2πd)

√(2d)

√d

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Process Equipment and Plant Design
With increase in gas flow rate to fabric surface area ratio (Nm³/hr/m² fabric surface area), the size & the cost of a bag filter

None of these

Decreases

Increases

Remain unaffected

None of these

Decreases

Increases

Remain unaffected

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Process Equipment and Plant Design

Process Equipment and Plant Design In a double pipe (concentric) heat exchanger, the hydraulic radius for heat transfer (for a fluid flowing through the annulus) would be

Process Equipment and Plant Design Pick out the wrong statement pertaining to the design of a long tube vertical evaporator.

Process Equipment and Plant Design In case of a 'thin' pressure vessel, the ratio of its diameter to wall thickness is

Process Equipment and Plant Design __________ head is the most economical for cylindrical vessels designed for operating at high pressure (> 15 atm.).

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 gas flow rate to fabric surface area ratio (Nm³/hr/m² fabric surface area), the size & the cost of a bag filter

Process Equipment and Plant Design
In a double pipe (concentric) heat exchanger, the hydraulic radius for heat transfer (for a fluid flowing through the annulus) would be

Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of a long tube vertical evaporator.

Process Equipment and Plant Design
In case of a 'thin' pressure vessel, the ratio of its diameter to wall thickness is

Process Equipment and Plant Design
__________ head is the most economical for cylindrical vessels designed for operating at high pressure (> 15 atm.).

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 gas flow rate to fabric surface area ratio (Nm³/hr/m² fabric surface area), the size & the cost of a bag filter