Shell and tube heat exchanger consist of a bundle of round tubes placed inside the cylindrical shell.Tube axis parallel to that of shell. One fluid inside the tubes while the other over the tubes.
The main components of this type of heat exchanger are:
i. Shell
ii. Tube bundle
iii. Front and rear headers of shell
iv. baffles
The baffles provide the support to tubes and also deflect the fluid flow approximately normal to tubes. This increase the turbulence of shell side fluid and improves heat transfer. The various types of baffles are existing and their type, spacing, shape, will depend on the flow rate, shell side pressure drop, required tube support, flow vibrations etc.
The fluid combination may be :
1 Liquid to liquid
2 Liquid to gas
3 Gas to gas
A ice plant producing 2000 Kg ice per day required the evaporative condenser is used.
Justification: The evaporative condenser is essentially a combination of a water-cooled condenser and an air-cooled condenser, utilizing the principle of heat rejection by the evaporation of water into an air stream traveling across the condensing coil.