This set of Heat Transfer Operations Multiple Choice Questions & Answers (MCQs) focuses on “Types of Condensers”.
1. What is the name of the following condenser setup?
a) Spray Condenser
b) Packed Column
c) Baffled Column
d) Fluidised column
View Answer
Explanation: The bed is stable and at a low height, hence the given figure is packed column. If it had been in free state, it would have been a fluidised column.
2. What is the name of the following condenser setup?
a) Spray Condenser
b) Tube side Condenser
c) Baffled Column
d) Fluidised column
View Answer
Explanation: The tube side condenser is a special condenser in which the coolant flows in the shell and the condensation in the tubes, hence the name tube side condenser. It cannot usually handle high pressure drops.
3. What is the name of the following condenser setup?
a) Spray Condenser
b) Tube side Condenser
c) Baffled Column
d) Sparged tube column
View Answer
Explanation: The sparged tube condenser consists of a perforated tube/ pipe with holes for injecting bubbles of vapour into a pool of liquid. The condensate being immiscible float at the top of the coolant, or maybe the coolant is the same material as the vapour.
4. What is the name of the following condenser setup?
a) Spray Condenser
b) Tube side Condenser
c) Baffled Column
d) Sparged tube column
View Answer
Explanation: The spray type condenser is actually a direct contact condenser where in which the coolant and gas come in direct contact as the coolant is sprayed with the use of nozzles in a vessel filled with the vapour.
5. What is the name of the following condenser setup?
a) Spray Condenser
b) Tube side Condenser
c) Baffled Column
d) Sparged tube column
View Answer
Explanation: The baffled column condenser is similar to the spray condenser, with the difference that the coolant is directed to flow over a set of trays in a column. The vapour is supplied from the bottom as shown in the diagram.
6. What is the name of the following condenser setup?
a) Tray Type
b) Jet Condenser
c) Sparged Tube
d) Air-cooled
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Explanation: The air cooled condensers are a separate category of condensers which use air as the cooling medium, it may be natural/forced convection air cooled condensers. As an example for this being the commonly used indoor refrigerators and air conditioners.
7. What is the name of the following condenser setup?
a) Tray Type
b) Jet Condenser
c) Sparge Tube
d) Air-cooled
View Answer
Explanation: The jet condenser is a device in which a jet of coolant liquid forced into a hot vapour stream, de-superheating the vapour and hence condensing it. Here a jet of liquid is injected into a vessel carrying vapour via a plate/pipe and a nozzle located at the centre axis.
8. What is the name of the following condenser setup?
a) Tray Type
b) Jet Condenser
c) Horizontal shell side
d) Air-cooled
View Answer
Explanation: The shell side condenser is a special condenser in which the coolant flows in the tubes and the condensation happens in the shell, hence the name shell side condenser. This condenser can handle large pressure drops.
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