1. Applications
  2. General dehumidification solutions
  3. Drying pellets

Optimum climate conditions: Drying pellets

Operators of pellet boilers set great store by a good fuel quality. By use of the high-performance desiccant dehumidifiers from Trotec pellets are protected from the harmful humidity during production and storage.

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: Because the formation of mould stains and mildew is imminent. The machines in the processing facility also suffer from the moisture exposure and begin to corrode. It usually pays to invest in a technical upgrade so as to retain the pellet quality and to protect the production machines. The stationary desiccant dehumidifiers of Trotec’s TTR series efficiently and reliably extract moisture from the ambient air. 

Inexpensive, efficient and eco-friendly: This would be the textbook example of modern-day heat supply. Which is why pellet boilers are in great demand for new buildings, but also when it comes to a conversion to regenerative heating media. Pellets can be used for heating without hesitation and the customer is independent from the price developments of oil and gas. As a matter of fact pellets are fundamentally a by-product in the woodworking industry. Whilst tree trunks are cleared for further processing in sawmills, the pellet manufacturers live on the accruing saw dust, bark and wood shavings. These are freed from foreign objects, ground to a uniform size and meticulously dried before being made into small briquettes and then compacted.

Beware of too high humidity values

At the latest when tackling this step in the pellet manufacturing procedure one should be mindful of an optimum climate conditioning during operation. Because the pellets or wood chips, out of which the biofuel is compressed, have to be perfectly dry. Required is a maximum moisture content of 10 to 15 per cent! After all, wood is a sensitive natural resource that warps constantly. If too much moisture is withdrawn from the air, the formation of mould stains and mildew won't be long in coming. And both can render entire product batches unusable. Hence, when drying pellets, manufacturers should rely on modern technology constituting a reliable countermeasure to the humidity in the ambient air. In this respect Trotec is the ideal partner. For Trotec provides a suitable climate solution for all areas in the manufacturing of pellets: powerful, reliable and energy-efficient.

Reliable drying thanks to professional technology

The desiccant dehumidifiers of Trotec’s TTR series guarantee optimum climate conditions for pellet production and storage. They represent a high dehumidification performance even with low dew points. The powerful devices are available both for the mobile and stationary application. In either case: All models are extremely durable, require only little maintenance and can be configured flexibly. The industrial dehumidifiers of the TTR series are developed and manufactured according to the highest of quality standards in Germany. This means prime technology to meet the highest quality requirements for securing the production process and the products. Recommended for a permanent, steady dehumidification are especially the stationary dehumidifiers of the TTR series from Trotec. 

Economical permanent dehumidification

Extremely high capacities combined with an economic operation: That is the operating principle of the TTR desiccant dehumidifiers. They guarantee an effective permanent dehumidification during pellet production. When applied in the pellet warehouse, the devices also do a competent job and reliably protect the products from the formation of mould stains and mildew. The dry air volume can be adjusted steplessly, so the required climate values are achieved at the push of a button. The internal heat recycling process as well as the high level of resilience of the sorption rotors mean that the dehumidifiers of the TTR series are among the most economical dehumidifiers of their kind.

Advantages of dehumidification during the pellet production  

  • precise dehumidification in professional quality “made in Germany” to prevent the formation of mould and mildew
  • equipped with manifold functions and extensive features as standard
  • powerful and robust models for stationary and mobile use
  • low-maintenance and space-saving construction  
  • best value-for-money ratio    

Professional consultation

Always on the spot when it comes to the determination of the correct demand: our consultants of the Trotec industrial services team. Which devices are suitable for the application in a production hall? Which models are the best for dehumidifying the air in storage facilities? Our experts will gladly answer these and many other questions and analyse the on-site equipment demand with you. That way you can secure production processes, machines and the quality of your stock. 

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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  • 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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  • Offshore: Preventing corrosion

    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...

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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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  • Humidity regulation in the field of battery production

    Extremely low humidity values, or in other words, an extremely low dew point are indispensable for the production of innovative and environmentally friendly batteries, so as to achieve an optimum product yield and product quality and furthermore ensure a long service life taking all required safety precautions into consideration. Practice-proven dehumidification solutions from Trotec protect...

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