Optimum economic pipe diameter for fluid flow is determined by the

Process Equipment and Plant Design
Optimum economic pipe diameter for fluid flow is determined by the

Viscosity of the fluid

Density of the fluid

Total cost considerations (pumping cost plus fixed cost of the pipe)

None of these

Viscosity of the fluid

Density of the fluid

Total cost considerations (pumping cost plus fixed cost of the pipe)

None of these

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Process Equipment and Plant Design
To keep the power input constant for a stirred vessel operating under fully developed turbulent flow conditions (constant power number), if the impeller diameter is increased by 20%, the impeller speed should be decreased by a factor of

(1.2)3/2

(1.2)2/3

(1.2)3/5

(1.2)5/3

(1.2)3/2

(1.2)2/3

(1.2)3/5

(1.2)5/3

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Process Equipment and Plant Design
The normal range of velocity of steam in pipes is __________ m/sec.

1-5

10-20

80-100

0.1-0.5

1-5

10-20

80-100

0.1-0.5

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Process Equipment and Plant Design
Pick out the wrong statement pertaining to the use of valve tray, seive tray and bubble cap trays in continuous distillation column.

Maintenance cost for valve and seive trays are comparatively more than bubble cap tray due to their relatively complicated construction features

Murphree efficiency of all the three trays are nearly equal, however the peak efficiency is generally higher for seive and valve trays than the bubble cap

Bubble cap trays though most expensive are the best in situations, where low vapour rates is to be handled and a positive liquid seal is essential at all flow rates

Valve trays have the highest turn down ratio (i.e. the ratio of the highest to the lowest vapour flow rates) and thus provides the maximum flexible operating range

Maintenance cost for valve and seive trays are comparatively more than bubble cap tray due to their relatively complicated construction features

Murphree efficiency of all the three trays are nearly equal, however the peak efficiency is generally higher for seive and valve trays than the bubble cap

Bubble cap trays though most expensive are the best in situations, where low vapour rates is to be handled and a positive liquid seal is essential at all flow rates

Valve trays have the highest turn down ratio (i.e. the ratio of the highest to the lowest vapour flow rates) and thus provides the maximum flexible operating range

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Process Equipment and Plant Design
The function of manholes provided in the shell of a distillation column is to

Guard against foaming & entrainment by dumping antifoaming agent through it

Keep a check on the liquid gradient over the plate by direct visual observation

Give access to the individual trays for cleaning, maintenance and installation

All of these

Guard against foaming & entrainment by dumping antifoaming agent through it

Keep a check on the liquid gradient over the plate by direct visual observation

Give access to the individual trays for cleaning, maintenance and installation

All of these

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Process Equipment and Plant Design
Scale up problem in design based on the similarity concept takes into account __________ similarity.

Kinematic

Geometrical

All of these

Dynamic

Kinematic

Geometrical

All of these

Dynamic

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Process Equipment and Plant Design

Process Equipment and Plant Design Optimum economic pipe diameter for fluid flow is determined by the

Process Equipment and Plant Design To keep the power input constant for a stirred vessel operating under fully developed turbulent flow conditions (constant power number), if the impeller diameter is increased by 20%, the impeller speed should be decreased by a factor of

Process Equipment and Plant Design The normal range of velocity of steam in pipes is __________ m/sec.

Process Equipment and Plant Design Pick out the wrong statement pertaining to the use of valve tray, seive tray and bubble cap trays in continuous distillation column.

Process Equipment and Plant Design The function of manholes provided in the shell of a distillation column is to

Process Equipment and Plant Design Scale up problem in design based on the similarity concept takes into account __________ similarity.

Process Equipment and Plant Design
Optimum economic pipe diameter for fluid flow is determined by the

Process Equipment and Plant Design
To keep the power input constant for a stirred vessel operating under fully developed turbulent flow conditions (constant power number), if the impeller diameter is increased by 20%, the impeller speed should be decreased by a factor of

Process Equipment and Plant Design
The normal range of velocity of steam in pipes is __________ m/sec.

Process Equipment and Plant Design
Pick out the wrong statement pertaining to the use of valve tray, seive tray and bubble cap trays in continuous distillation column.

Process Equipment and Plant Design
The function of manholes provided in the shell of a distillation column is to

Process Equipment and Plant Design
Scale up problem in design based on the similarity concept takes into account __________ similarity.