Write construction and disadvantages of short tube evaporator.

Write construction and disadvantages of short tube evaporator.
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1 Answer

Answer :

Construction:  

It consists of number of tubes which are from 1 to 2 meters in length and from 40- 80 mm in diameter.

About 1000 tubes are fitted in a vessel upto 2.5 meter or more in diameter.

This part is called as “calandria”.

The tubes are filled with liquid and surrounded by steam.

The level of liquid is maintained slightly above the top of the tube so that the space which is left in the evaporator can be used for the purpose of separation of from boiling liquid.

Diagram: 

image

Dias advantages:  

1. It is quite complicated and expensive in construction.

2. Difficult to clean.

3. Maintenance is costly.

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