How Do Air Coolers Work

Air coolers are industrial or commercial installations designed to cool air in a variety of rooms. This equipment is used in refrigeration and freezers, workshops, ventilation systems, and cooling electric motors and electric generators.

The design of the air coolers includes several basic components. These include an electric motor with a fan, an evaporating unit, a tube system and various support equipment (thawing trays, condensate pallets, etc.). Water and water solutions of glycols are most often used as coolers. The main differences between air coolers and similar split-systems are:

  • No need to remove the outer block
  • More affordable cost
  • “Air cooler-chiller” steam consumes less electricity than central air conditioning;
  • Environmental cleanliness (refers to equipment that uses water as a cooler);
  • relatively simple design, reducing the likelihood of breakdowns.

How do air coolers work?

The principle of this equipment is based on simple physical laws, mainly on the first beginning of thermodynamics. According to these laws, heating and evaporation of water occur with the absorption of thermal energy from the surrounding space. Thanks to this process, the evaporating liquid in the air coolers takes the heat from the surrounding air and, accordingly, cools it. At the same time, there is such an addiction: the higher the room’s temperature, the more intense the heating of the water and the faster the cooled environment.

Thus, the whole process takes place without any chemicals, such as refrigerant gas, as in air conditioners. Thanks to natural heat exchange technology, air coolers do not require a lot of energy to operate: electricity is mostly used to operate a water pump and a fan. To transfer heat as efficiently as possible, the equipment uses heat exchangers with a mesh structure. It increases the area of contact between water and air.

The order of the installations is also straightforward. The air is pumped with a fan through a special filter, constantly wet with water. At the same time, there is the evaporation of water with parallel cooling of passing air.


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