Closed circuit cooling towers are characterized by the fact that the cooling water circulates in a closed coil system or primary circuit. The secondary circuit - water present in the cooling tower basin is circulated via a pump to the water distribution and cools the primary circuit by evaporation.

Closed circuit cooling towers are mainly used in situations where the consumer needs pure water that must under no circumstances contain impurities, deposits or oxygen.

Advantages of closed circuit cooling towers:

- Pure cooling water free from deposits and oxygen             

- Durable heat exchangers             

- Low-noise operation             

- Maintenance-friendly.