Air-cooled plants

In the chemical industry fin tube heat exchangers are often used in air cooled plants (re-cooling plants) to discharge discontinuously arising heat at low costs. In comparison with shell-and-tube systems, which require piping and control and maintenance air cooled plants can be located independently and operated without any cooling connections. Only the support with electric energy for the axial fans is required. In case of cooling of high viscous liquids tube sided turbulators are used.

The use of frequency controlled axial fans allows a wide range of load points for the cooling circuit. To avoid tube sided freezing an anti-freezing protection can be provided.

 

 

The heat exchangers used in air-cooled plants are often similar whilst the construction varies as follows.

 

 

 

 

 

 

 

Horizontal construction with vertically forced draught fans in single or

multi-bay arrangement.

Main application:

• Condenser

• Liquid cooler 

 

 

 

 

 

 

 

 

Roof type construction with forced draught fans

Main application:

• Low pressure steam condenser

• Dephlegmator

Minor requirement of erection area.

 

 

 

 

 

 

 

 

V-construction with induced draught fans

Main application:

• Condenser

• Liquid cooler

Providing maximum air outlet temperature 70°C.

Minor requirement of erection area.

 

 

 

 

 

 

 

Vertical construction with horizontally forced draught fans

Main application:

• Condenser

Vertical construction with horizontally induced draught fans

Main application:

• Condenser

Providing maximum air outlet t emperature 70°C.

Minor requirement of erection area.

 

 

 

 

 

 

Vertical construction in hexagon arrangement with vertically induced

draught fans

Main application:

• Condenser

Providing maximum air outlet t emperature 70°C.

Minor requirement of erection area

 

 

 

 

 

Shut-down coolers for liquid media are horizontal constructions similar to a one-pass condenser.

 

Slideshow

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Slideshow

click to enlarge