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Process Equipment and Plant Design

Process Equipment and Plant Design
Value of Peclet number = ∞, is the representative of

Complete back mixing
Plug flow
Eddy diffusivity = 0
Laminar flow

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Process Equipment and Plant Design
The shell side pressure drop in a shell and tube heat exchanger is maximum for __________ baffle.

Independent of the type of
Disk and ring
Segmental
Orifice

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Process Equipment and Plant Design
Angled baffles are preferred in the agitation tank to control the swirling action; if the viscosity of the liquid to be mixed is about 200 poise. However, the baffle may be completely eliminated for mixing liquids having viscoisty above __________ poise.

1000
300
1500
600

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Process Equipment and Plant Design
Baffles are provided in a shell and tube heat exchanger to increase the turbulence and velocity of the shell side fluid. Which of the following shaped baffles does not fall in the category of transverse baffle?

Helical type baffle
Disk type baffle
Flat plate extending across the wall
Segmental baffle

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Process Equipment and Plant Design
For identical situation, condensing film coefficient in case of a horizontal condenser is almost __________ the value expected in case of vertical condenser.

Thrice
Half
Five times
Twice

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Process Equipment and Plant Design
For turbine agitator, the impeller diameter is about

0.65 to 0.85 d
0.1 to 0.2 d
0.95 d
0.3 to 0.5 d

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