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Process Equipment and Plant Design

Process Equipment and Plant Design
The average velocity in the tubes of a 1-4 heat exchanger is __________ times that in 1-1 heat exchanger having the same size & number of tubes and operated at same liquid flow rate.

2
43832
4
43834

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Process Equipment and Plant Design
LMTD correction factor is used in heat exchanger design for

Multipass shell and tube heat exchanger
Counter flow of hot and cold fluids
Double pipe heat exchanger
Fouling fluids

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Process Equipment and Plant Design
The value of fouling factor depends upon the

Suspended solids in the fluid
Characteristic of process fluid
Velocity of process fluid containing suspended solids
All 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)5/3
(1.2)2/3
(1.2)3/2
(1.2)3/5

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Process Equipment and Plant Design
In the allocated cap area, bubble caps are generally arranged on equilateral triangular pitch. Number of caps fixed on a plate is with a

Clearance of 25-75 mm
Cap pitch of 1.3-2 times the cap diameter
Neither A nor B
Either A or B

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Process Equipment and Plant Design
1.2 to 3.8 cms is the value of the

All of these
Downcomer liquid seal in case of a balanced tray design
Skirt clearance for bubble caps
Static submergence in case of a bubble cap tray for column operating under pressure (≥ 1 atm.)

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