Pressure drop due to pipe fittings can be estimated by the equation, ΔP/p = 4f.Le/D.V2/2gc, where, Le = equivalent length of straight pipeline which will incur the same frictional loss as the fitting and D = diameter of the fitting. The value of Le/D (dimensionless) for 45° elbow and 180° close return bends would be respectively around

Process Equipment and Plant Design
Pressure drop due to pipe fittings can be estimated by the equation, ΔP/p = 4f.Le/D.V2/2gc, where, Le = equivalent length of straight pipeline which will incur the same frictional loss as the fitting and D = diameter of the fitting. The value of Le/D (dimensionless) for 45° elbow and 180° close return bends would be respectively around

180 and 300

45 and 75

5 and 10

300 and 500

180 and 300

45 and 75

5 and 10

300 and 500

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Process Equipment and Plant Design
Oxygen carrying pipelines in chemical industries are coloured with __________ colour.

Yellow

Red

Black

Blue

Yellow

Red

Black

Blue

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Process Equipment and Plant Design
If a single tube pass heat exchanger is converted to two passes; for the same flow rate, the pressure drop per unit length in tube side will __________ times.

None of these

Increase by 21.6

Decrease by 22

Increase by 1.8

None of these

Increase by 21.6

Decrease by 22

Increase by 1.8

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Process Equipment and Plant Design
In a shell and tube heat exchanger, the clearance of the tube is generally

More than the tube diameter

More in case of triangular pitch as compared to the square pitch tube layout

Equal to the tube diameter

Not less than one-fourth of the tube diameter or 3/16"

More than the tube diameter

More in case of triangular pitch as compared to the square pitch tube layout

Equal to the tube diameter

Not less than one-fourth of the tube diameter or 3/16"

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

Viscosity of the fluid

None of these

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

Density of the fluid

Viscosity of the fluid

None of these

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

Density of the fluid

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Process Equipment and Plant Design
Thin spherical shells subjected to internal pressure, develop __________ stresses.

Neither A nor B

Both A & B

Radial

Circumferential

Neither A nor B

Both A & B

Radial

Circumferential

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Process Equipment and Plant Design

Process Equipment and Plant Design Oxygen carrying pipelines in chemical industries are coloured with __________ colour.

Process Equipment and Plant Design If a single tube pass heat exchanger is converted to two passes; for the same flow rate, the pressure drop per unit length in tube side will __________ times.

Process Equipment and Plant Design In a shell and tube heat exchanger, the clearance of the tube is generally

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

Process Equipment and Plant Design Thin spherical shells subjected to internal pressure, develop __________ stresses.

Process Equipment and Plant Design
Oxygen carrying pipelines in chemical industries are coloured with __________ colour.

Process Equipment and Plant Design
If a single tube pass heat exchanger is converted to two passes; for the same flow rate, the pressure drop per unit length in tube side will __________ times.

Process Equipment and Plant Design
In a shell and tube heat exchanger, the clearance of the tube is generally

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

Process Equipment and Plant Design
Thin spherical shells subjected to internal pressure, develop __________ stresses.