Adiabatic cooling solutions

Using adiabatic cooling solutions in hot climates

We have been using free-air cooling systems in many of our technology centres for several years. They are more cost and energy efficient than conventional air conditioning solutions but are not always effective in hot climates. To address this limitation, we are introducing adiabatic cooling systems.

Adiabatic cooling works by spraying water into the air before entering the existing free cooling chillers. As the water evaporates, the air is chilled. In Portugal, we have an adiabatic cooling system that switches on automatically whenever external temperatures rise above 24°C, approximately one fifth of the operating time. This has resulted in savings of about 35 MWh (5% of total cooling energy required) in one year.

We are installing adiabatic cooling solutions in other markets where high temperatures are prevalent.