Related Questions

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?
A Segmental baffle
B Flat plate extending across the wall
C Disk type baffle
D Helical type baffle
Good design of the casing of a centrifugal pump aims at minimising the
A Cavitation
B Frictional losses
C Kinetic energy loss
D Static head
Which of the following is not accomplished by agitation of liquids in agitators?
A Dispersing gas in liquid
B Blending of immiscible liquids
C Dispersing immiscible liquid in form of emulsion
D Suspending solid particles
In the agitators, the power required will be changed with the increase of diameter of agitator (D) as
A D2
B D5
C D
D D9
Use of transverse baffles in a shell and tube heat exchanger is done to increase the
A Rate of heat transfer
B Flow velocity
C Turbulence of shell side fluid
D All of the above
__________ baffles are provided in ball mills.
A Horizontal
B No
C Only two
D None of these
The main function of baffles provided in a shell and tube heat exchanger is to
A Facilitate the cleaning of outer tube surface
B Enhance turbulence
C Hold the tubes in position
D All of the above
Baffles in the shell side of a shell and tube heat exchanger
A Increase the cross-section of the shell side liquid
B Force the liquid to flow parallel to the bank
C Increase the shell side heat transfer co-efficient
D Decrease the shell side heat transfer co-efficient
Baffles may be eliminated for
A [

A. Low viscosity liquids (

B. High viscosity liquids (> 600 poise)

B Large diameter tanks
C None of these
In a shell and tube heat exchanger, baffles are provided on the shell side to
A Improve heat transfer
B Provide support for tubes
C Prevent stagnation of shell side fluid
D All of these

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