Hamon Group

Integrated solutions for a clean environnement

Air Cooled Heat Exchangers

The air-cooled heat exchangers are mostly used when the plant location and the ambient conditions do not allow an easy and economic use of other cooling systems.
The most evident advantages of air-cooled heat exchangers are:

  • Prevention of thermal and chemical pollution of cooling fluids (closed circuits)
  • Flexibility for any plant location and plot plan arrangement (installation over other units)
  • Reduction of maintenance costs
  • Easy installation by bolted assembly
  • Lower environmental impact than shell and tube heat exchangers thanks to the elimination of an auxiliary water supply


HAMON D’HONDT provides complete aircooler units including tube bundle assembly, motor-fan groups, structure, access ladders and walkways. Typical arrangement can be

  • forced draft
  • induced draft
  • air-recirculation unit

Hamon D’Hondt supplies also Pre-assembled modules.

Typical components include headers, finned tubes, and fan assembly.


Forced draft

Allows easier maintenance of the fans.
Fans deliver air at ambient temperature with consequent higher efficiency.


Induced draft

The plenum chambers are mounted on top of the bundle and protect the finned surface against wind, rain, snow and partially hail. The location of the fans also ensures an optimum air distribution, limits air recirculation and allows maintenance at a lower level. 


Recirculated / Winterization

This feature is recommended for special process (hydrate prevention..) and cold climates where it is advisable to provide warm air recirculation to prevent freezing or pouring. The recirculation may be achieved by mean of louvers, steam coils and variable fans.


Pre-Assembled modules

The long construction time needed for the installation of the plants as well as the lack of manpower and its increased cost, have prompted the introduction on the market of pre-assembled units. These units are expressly designed for safe transport and easy installation on the plant. On demand they can be shop tested before delivery.