1. Applications
  2. General dehumidification solutions
  3. Offshore: Preventing corrosion

The challenge at sea: Condensation water and corrosion

Dehumidification in offshore wind turbines increases the operating time

It is always humid on the high seas – after all, the humidity level may reach up to 100 percent. Moreover, temperatures drop significantly at night, which leads to condensation on surfaces and in interior spaces. With a sophisticated dehumidification concept using high-performance units from Trotec, consequential damages are prevented.

Corrosion of metal parts in the nacelle of a wind turbine or in the tower itself as well as electrical failure are among the most typical humidity damages in offshore surroundings. They cause substantial additional costs as they increase the expense for maintenance and repair and may lead to operational downtimes. Plus, they reduce the turbine's life. In this case, strategically positioned dehumidifiers, heating devices and fans provide a remedy and protection from condensation water and rust.

Little air exchange and extreme cooling

The particular challenge in the conception of the dehumidification installation is that the turbine is closed and thus there is only little exchange of air. Fans are able to increase the air circulation. Furthermore, temperatures often drop below the dew point due to the extreme cooling at night or due to weather changes. As a result, condensation water forms on the cold outer wall in the tower or in the nacelle. Without targeted dehumidification, it will drip down onto plant components sooner or later. This may result in corrosion of plant components and short-circuits in switching mechanisms. Moreover, puddles form on the floor which present a risk of accident for the maintenance staff. This can be prevented: With suitable dehumidification technology from Trotec, condensation water will not even start to form.

Dry room climate reduces maintenance costs

Power plant operators can choose between several high-performance device series from Trotec for dehumidification in wind turbines – by the way, the devices have been developed and produced in Germany and offer you reliable quality "Made in Germany". For fighting humid sea air, we particularly recommend using the stationary desiccant dehumidifiers of the TTR series. Depending on the size of the turbine and the on-site conditions, the dehumidification concept may be complemented by electric heaters and fans, which prevent the formation of condensation and corrosion in a selective way. Thanks to the targeted internal air circulation, the inner sides of the outer walls are kept dry and moisture cannot even start to accumulate. The remote monitoring of the humidity level can be implemented reliably with our DL200 data loggers.

Safe planning with the Trotec industrial services team

The industrial services team ensures the correct planning and realization of a safe dehumidification concept: First of all, you will support our experts in calculating the climate parameters and planning the installation. Afterwards, before installing stationary dryers or dehumidifiers, we will test the functionality of the dehumidification concept with the help of mobile devices of the same type. Humidity under control? Only then will the permanent solution be installed.

 

Further solutions


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 ...

Further application examples for air dehumidification

  • Environmental simulation climate chamber

    In climatic chambers and wind tunnels three factors need to be simulated at the best possible rate: air temperature, wind strength and humidity. For the latter, the automotive industry needs dehumidifiers, which also perform well at dew points below 0°C, as well as high-performance desiccant dehumidifiers.

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  • Dehumidifying & air cleaning for coating

    There are three parameters to be controlled when coating car components: room temperature, humidity and the dust content in the air. In addition to dehumidifiers and heating devices we also provide sustainable air cleaners with special volumetric flow regulation for this production stage in the automotive industry.

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  • Dehumidification in tents

    When preparing a tent or another type of temporary accommodation, good room conditions are essential. This applies particularly to makeshift dwellings accommodating large numbers of people. This can be tent cities or container villages for asylum seekers, tent camps for youth groups, tents used as a place to sleep at large events, and also containers serving as a temporary home for seasonal...

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  • Drying hygroscopic bulk material

    Varying and too high humidity values can ruin the pourability of powders and granules – and thus entail high consequential costs. In order for hygroscopic bulk material not to go lumpy nor to block hauling paths, the entire air in the chemical and pharmaceutical production must be pre-dried. Using adsorption dryers of the TTR series that's no problem.

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  • Drying after silo cleaning

    After the cleaning of storage containers and silos you have to count on them to be fully dried for new bulk material to be protected against moisture from the beginning. And since drying can be effected in a quick and economical manner, we advise decision makers from the chemical and pharmaceutical industry to consider our high-performance dryers of the TTR series.

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  • Drying pellets

    Who turns his back on proper air conditioning for production and storage facilities risks serious damage to the product. This is also true for the manufacturing of pellets. The biofuel is particularly susceptible to excessive humidity values. For the untreated raw wood withdraws the humidity from the air and absorbs it. With devastating consequences for both the customer and the manufacturer:...

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  • Dehumidification in hotels

    A suitable room climate is a prerequisite for the well-being of hotel guests. If the air in the room is too warm or humid, it appears to be stale and muggy. Often damages appear at the building structure and interior within a short period of time. Wallpaper will be dotted with mould stains, curtains and clothes as well as linen become damp and musty and – if it comes to the worst – mildew runs...

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  • Dehumidification in indoor ice-skating rinks

    Due to the difference in temperature between air and the icy surface, condensation inevitably forms in every ice rink – especially when humid air keeps flowing in from outside through the refrigeration system. The solution against dripping water on the ice and against damage to property constitutes a dehumidifier. It prevents condensation in the offing.

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  • Drying compressed air

    The most frequent causes for a production stop are too much water vapour in the machines and installations, and corrosion inside the pipelines. Therefore, too humid compressed air should be avoided by all means. An effective option is the use of high-performance dehumidifiers. The answer to the question of how dry the compressed air has to be in order to guarantee optimum production conditions and...

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  • Mobile devices for sanitary, heating and ventilation engineers

    Many sanitary, heating and ventilation engineers use the mobile devices from the Trotec Group. Here sanitary, heating and ventilation engineers find everything they regularly need for their daily business to bridge the downtimes of stationary installations – all from a single source: mobile heating devices and central heating units, mobile air handling units or cooling systems right down to...

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  • Dehumidification after restoration work

    With an extensive reconstruction flats and houses are being polished up so as to quickly attract potential buyers. Estate agents rely on this service for a better marketability. But home builders also very much appreciate it when their own four walls are in immaculate condition before they move in. The future inhabitants’ thrill of anticipation increases along with the progress in construction...

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  • Dehumidification in cinema halls

    A cinema audience essentially wants one thing: to unwind and get away from the daily routine by succumbing to a world of fiction. Loud voices and unwelcome sources of light can be just as annoying as an inappropriately tempered auditorium and a poor air quality. Precisely because it is difficult to properly ventilate cinema facilities, they are usually equipped with powerful air-conditioning...

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  • Humidity regulation in gas distribution stations

    The consequences of condensation water and high humidity levels in gas distribution stations are well-known – and expensive: corrosion of pipes, stairways and other metal parts as well as moisture-related failures of the control electronics may entail incalculable costs. If you want to prevent this from the outset, investing in a professional dehumidification system pays off.

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  • Humidity regulation in gas turbine power stations

    Gas turbine power stations significantly contribute to the coverage of short-term peak loads. A sophisticated humidity regulation helps to prevent the breakdown of individual gas turbines due to corrosion and problems with the electronics.

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  • Dehumidification in bridges

    Inside bridges, steal beams, electric lines and technical rooms are subject to high humidity. For decades, it has now proven an efficient alternative to high-maintenance anti-rust paint to instead use dehumidifiers to keep bridges dry on the inside. Trotec desiccant dehumidifier of different capacities are used for dehumidification.

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