1. Applications
  2. Storage and logistics dehumidification
  3. Dehumidification in wind turbine component depots

Humidity regulation for plant component storage

TTR high-performance dehumidifiers protect wind turbine components

In the construction phase of a wind turbine, the plant’s components are sometimes stored for months in very large depots such as halls or temporary storage tents prior to assembly. To prevent damage caused by corrosion or frost during storage, a sophisticated system for humidity regulation is necessary.

Each season has its particular challenges and dangers for the tower elements, all metal parts and the control electronics of a wind turbine: in the summer, the humidity level may rise above 80 per cent, and in the winter, there is a danger of frost damage due to the penetrated moisture. Moreover, condensation water resulting from temperature drops presents a serious problem. Nowadays, the traditional method of heating storage spaces to keep them dry is no longer sufficient. For one thing, the heat loss and thus the energy costs are too high, and for another, the humidity level is particularly extreme, especially in the summer. Heating additionally to reduce the humidity level to the desired 60 per cent does not make much sense in this case. With the desiccant dehumidification offered by the stationary high-performance units of the TTR series Trotec provides a contemporary solution feeding in dry air and discharging moisture.

An enormous challenge: the size of the depot

Wind turbine components such as tower sections are one thing above all: very large. Accordingly, air quantities of up to 75,000 cubic metres have to be dehumidified in storage halls or tents. This can be achieved with high-performance TTR 8200 devices with Trisorp Dual functional principle. This desiccant dehumidifier dehumidifies up to 9,000 cubic metres of air per hour, which means that even in mega depots humidity can be regulated with few devices. The TTR series is regarded as the most economical of its kind and impresses with a very high dehumidification performance even at low dew point temperatures, with advanced Monoventic control electronics, premium fan, integrated heat recovery and microprocessor control with plain text display for function monitoring and energy management.

Another challenge: long air transport routes

In order to regulate the humidity uniformly in a depot with a length of 50, 70 or even 90 metres, ideally a ceiling-suspended hose system is installed. The desiccant dehumidifiers of type TTR 8200 offer the required power to transport the dry air over such a long distance and to discharge humid air as well. In order to save expensive storage space, the industrial dehumidifiers can also be set up in a weather-proof model or in containers outside the depot.

Further solutions

Make use of our best practice industrial services

Make use of Trotec's best practice industrial services

Since every industrial undertaking has characteristic process flows, installations and facilities, every air treatment solution demands case-specific device configurations. All in all, the combined effects of air currents, humidity conditions and temperature fluctuations are often hard to calculate on a purely theoretical basis, e.g. in airlock areas or on conveying paths. The consequence: Unnecessary additional costs due to an overestimated demand or – even worse – solutions not working sufficiently in real life.

You can count on our experts

In order to precisely calculate the demand in the industry and to develop tailor-made concepts for climate conditioning experienced climate specialists are needed. Rely on our team of experts as well as the industrial services: We analyse the individual requirement situation with you present on site, determine the specific demand for devices and develop a tailor-made project solution right up to the exact positioning of the devices.

Before the planned stationary units are installed, our service team first works with mobile versions of the drying units as part of a trial run. These can be put up without any difficulty or the need for structural changes.

During this validation phase we document all relevant climate parameters such as air temperature, relative humidity, dew point or flow rate for a final optimization of the requirement calculation.

Trotec is the only provider of this advantage:

Thanks to the unique option of non-binding trial operation you will invest solely in solutions which have verifiably proven their worth in everyday operation meeting your individual on-site requirements. The stationary units will not be ordered until you are fully satisfied with our concept. The only costs incurred consist of an inexpensive hiring flat rate for the time of test operation.

Just give us a call at +49 2452 962-777 – our industry consultants will be pleased to help you personally and provide information regarding our best practice industrial services. Or send a request indicating your personal requirements directly to our industry experts. We will answer promptly!

Upon request, we also produce customized desiccant dehumidifiers as special models

Upon request, we will readily produce tailor-made desiccant dehumidifiers as special models “made in Germany” perfectly geared to your needs, e.g.:

  • TTR industrial desiccant dehumidifiers with hygienic design
  • TTR industrial desiccant dehumidifiers for PWIS-free dry air
  • TTR industrial desiccant dehumidifiers with extremely low dew point

Makes use of the possibility of having special models with tailored components for your individual needs planned, designed and manufactured in close consultation with our specialists.
Click here to find out more ...

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