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This quiz contains multiple-choice problems on the design and operations of agitated vessels and scraped surface heat exchangers, transient heating and cooling, jacketed vessels, and internal coils.
For exothermic reactions, which setup is best suited for an agitated vessel?
Which of the following jackets is best suited for agitated vessels?
Full conventional jacket
Dimpled jacket
Coiled jacket
Half-pipe jacket
Which of the following is not a type of jacket?
Full conventional jacket
Dimpled jacket
Coiled jacket
Half-pipe jacket
Which of the following is not a factor for the jacketed vessel’s low heat transfer rate?
Thick wall
Low surface area
Quality of material
Surface not in contact with vessel
Which of the following jackets is least preferred?
Full conventional jacket
Dimpled jacket
Coiled jacket
Half-pipe jacket
Which jacket is used to provide better mechanical strength?
Full conventional jacket
Dimpled jacket
Coiled jacket
Half-pipe jacket
Which internal coil is most frequently used?
Full helical coils
Singlet coil
Ringlet coil
Semi helical coil
Why are full helical coils so common in industries?
Provides large surface area
Mechanically stable
Very cheap to install
Handles highly corrosive substances
Ringlet coils have a disadvantage. What is it?
Provides less surface area
Mechanically unstable
Very expensive to install
Leaves unmixed areas
When a highly corrosive and reactive substance is used in operation, we prefer to use
Full helical coils
Full conventional jacket
Ringlet coil
Semi helical coil
For the manufacture of pharmaceuticals, we prefer to use __ when minimising contamination.
Full helical coils
Full conventional jacket
Ringlet coil
Semi helical coil
A jacket has a lower heat transfer rate and coefficient than a coil. True or false?
True
False
A conventional jacket is usually fitted with baffles. True or false?
True
False
Why are agitated vessels usually used in batch manufacture?
They are necessary to calculate batch cooling and heating times
Because batch processes occur in vessels
It avoids harmful reactions
It supports endothermic reactions
Heat transfer in agitated vessels can be carried out by
Jackets and plates
Plates and coils
Jackets and internal coils
Semi coils and internal coils
