Humidity Control Specialists: Dehumidification & Accelerated Drying


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Wind Farms

Wind Farms – Dehumidification & Moisture Removal

Wind turbines naturally have a high humidity in the tower. Controlling the humidity inside a turbine is complex and requires a specialist approach.

By controlling the humidity inside wind turbines, the following issues can be eliminated:

  • The risk of condensation, corrosion, electrical faults and mould
  • Operational disruption
  • Damage to equipment and structures
  • Downtime
  • Reduced maintenance

A specialist approach to solving the very specific issues around wind farms has been developed by Cotes in Denmark for the application of their dehumidifiers to wind turbines both land-based and offshore.

The Cotes Overpressure System is a patented method of preventing the ingress of moisture laden air into these facilities. Airborne moisture is one of the biggest sources of operational disruption, damage to equipment and structures, and costly practical problems inside the nacelles and towers of wind turbines — especially those offshore.

Such airborne moisture combines with salts in the air to cause corrosion, as well as giving rise to condensation and bacterial growth. Together, these result in a big range of different problems with structures, coatings, mechanicals and electronics, as well as causing electrical glitches and expensive unscheduled downtime.


There are 2 distinct approaches to dealing with these issues:

Specialised Cotes Wind Turbine dehumidifiers

These, and the patented Cotes Overpressure System, provide the easiest and most effective way to limit the combined effects of moisture and salts inside wind turbines, by automatically managing the levels of humidity present.

Cotes Overpressure System

A complete, patented dehumidification system designed to help prevent the ingress of moist, salt-laden air into wind turbine nacelles and towers. The Cotes Overpressure System helps you prevent humidity problems from even arising.

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Clients we help

How our systems can help

Using our engineering expertise and skill base, we are able to design unique applications, based on calculated psychometrics, to achieve and maintain optimum relative humidity levels (RH%) or accelerating drying. 

We have been behind extensive improvements in productivity across a multitude of industries.

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