Onshore wind turbines

Cotes Wind dehumidifiers

These compact, lightweight dehumidifiers are specially configured for installation inside the nacelles and towers of wind turbines. Their small size and limited weight make it easy to mount these units even when space is tight.

They are also remarkably reliable, providing operators with full control of humidity conditions in order to maximise uptime and revenue. The dehumidifier is automatically turned on and off in order to maintain any designated relative humidity set point, as required to meet the desired conditions.


The CR240BW and CR400BW models, are designed for use in locations with exceptionally high levels of humidity, and for installation in the new generations of significantly larger wind turbines.

protection during transport and storage

The Cotes Wind CR80B model is in widespread use worldwide, especially for maintaining stable, controlled humidity conditions in most normal-sized wind turbines during transport and storage.


How it works

The combined dehumidifier/desalter setup in the Cotes Wind unit works by mixing the moisture-laden, salty air entering the turbine with dry air.

This then makes the water component in the sea water droplets evaporate, leaving the salts behind in crystalline form. These crystals are like dry dust, making it much easier to filter them out.

The special design of these units features a filter cassette with an exceptionally large filter area as well as an unusually long service life. This prevents the filters from getting blocked by wet, often salt-laden air.

Related industries

For more about tackling humidity in wind turbines,
pleases contact Mikael Zacho Jensen +45 5167 2903