1. Applications
  2. Storage and logistics dehumidification
  3. Constant wood moisture in timber yards

Stable wood moisture in timber yards

Quality assurance for timber using dehumidifiers

Condenser dryer or desiccant dehumidifier? Ask the Industrial Services department

In the past, when storing wood it had been rather a challenge to keep the moisture of furniture wood below the required 9 per cent, for example: If no dehumidifiers are used, seasonal temperature differences and fluctuations in air humidity cause the wood moisture to rise. This considerably affects timber quality and results in problems during processing and even in reject.

Air humidity in the timber yard is crucial to achieve stable timber quality. Wood moisture directly depends on humidity, since every hygroscopic material establishes equilibrium with the quality of the surrounding air. That is why the temperature and product moisture of the stored timber adapt to the conditions of the air. The "equilibrium" is achieved when wood and air do not absorb any more moisture from one another. For storing furniture wood, for example, that means that air humidity must be below 43 per cent for the wood moisture to remain below 9 per cent. For a wood moisture of 11 per cent, air humidity must be stable at 55 per cent. Temperature does not play a part in this. That means there is no heating system required for the timber yard, but only dehumidifiers which feature reliable measurement technology for constant air humidity control.

Whether condenser dryers or desiccant dehumidifiers are the right solution, depends on diverse factors. Feel free to contact us for consultation: Just ask the consultants from our Industrial Services department for help with capacity calculation and choosing the right devices for your timber yard.

Desiccant dehumidifiers of the TTR series in timber yards

Both dehumidifier series can be used in timber yards: In large halls, the large stationary desiccant dehumidifiers of the TTR seriess also reliably operate at temperatures down to -20 °C. The largest dehumidifier of that series, the TTR 13500, for example, dehumidifies 13,300 cubic metres of air per hour. For such large devices, dry air can be supplied through air hoses mounted on the ceiling. The TTR series impresses with high-stability silica gel sorption rotors and the TTR functional principle. Monoventic control electronics, premium fan, integrated heat recovery as well as microprocessor control with plain text display and energy management are all further benefits.

The alternative: Industrial condenser dryers of the DH series

In addition to desiccant dehumidifiers of the TTR series, the stationary DH condenser dryers can also be used for dehumidification in timber yards. With 2,200 cubic metres of air per hour, the largest model of this series, the DH 160, has a capacity similar to the comparable model of the TTR series. These dehumidifiers are made of high-quality, highly resistant components and are particularly suitable for continuous dehumidification in timber yards. Because they are condenser dryers, DH devices not only feature a high dehumidification performance, but are also very economical.

Data loggers ensure stable air humidity and wood moisture

To keep the air humidity in a timber yard for furniture wood constantly at 40 per cent so that the wood moisture remains below 9 per cent, the measurement technology must be reliable. The data loggers of the MultiMeasure Professional series, DL200H and DL200X, which are made in Germany, offer diverse options for tamper-proof long-term measurements. These data loggers ensure constant timber quality until delivery.


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 solutions

Further application examples for air dehumidification

  • Dehumidifying & air cleaning in storages

    The Trotec Group provides different dehumidification solutions – from the condensation dehumidifiers of the DH series to the adsorption dryers of the TTR series. Both are available as mobile and stationary versions. We offer the right dehumidification technology for every depot or dispatch warehouse. Innovative measuring devices and data loggers complete the dehumidification concept for storage...

    Additional information
  • Dehumidification in fertilizer storage facilities

    The production of hygroscopic materials in the chemical industry requires intuition and sure instincts. After all, the substances love water and readily absorb the moisture contained in the ambient air. And this can have disastrous economic consequences. As it binds water, the material starts sticking together and clumping, and may become unusable in the worst case. One example are fertilizers. If...

    Additional information
  • Dehumidification in wind turbine component depots

    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.

    Additional information
  • Dehumidification of appliance rooms

    Proper protective equipment and perfectly functioning devices are indispensable for operations by the fire brigade and the THW. Protective suits, hoses and tubes must be absolutely leakproof. Tools such as spreader forceps and bolt cutters have to be in an immaculate condition, just like technical devices such as high-performance fans, cutting torches and headlights. In order to store the whole...

    Additional information
  • Dehumidification in drying rooms

    In the production of electronic equipment and semiconductors humidity can lead to electrostatic charge. For this reason, sensitive processing steps are being performed in cleanrooms and drying rooms. The mobile adsorption dryers of the TTR series are ideal for these high requirements during dehumidification.

    Additional information
  • Dehumidification in ships' holds

    There is only one remedy for mould, microbial contamination and corrosion on cargo and ship: to supply constantly dry air with a humidity suitable for the cargo into the ship’s hold. To achieve reliable results, the dehumidification system must have been planned professionally.

    Additional information
  • Dehumidification circuit board storages

    When storing printed circuit boards humidity can lead to electrostatic charge and patina formation or corrosion. Particularly suited for dehumidifying the PCB storage space are the mobile adsorption dryers of the TTR series – just as well as for other operating sectors in the electronics and semiconductor production.

    Additional information
  • Dehumidification dispatch & transport

    In the silo as well as during transport hygroscopic bulk material is endangered by humidity – this holds true for both the chemical and the pharmaceutical industry. Humidity continues to be a problem after production, because the products are mostly packed into damageable cardboard boxes with paper inserts. Therefore, dehumidification also plays a key role for storage, dispatch and transport.

    Additional information
  • Dry air storage

    The requirements in dry air storage are very much alike in many industries: Bacterial growth on foodstuffs, powders going lumpy, corrosion on metal parts – all can be prevented, when the relative humidity is constantly kept below 50 %. A value of 70 % RH suffices as mould protection. The dehumidifiers of the TTR series along with the matching data loggers represent dehumidification systems which...

    Additional information
  • Dehumidification in wine cellars

    The different temperatures at which the wines are fermented are usually set by the winemaker via the thermostats integrated in the tanks. But the use of dehumidifiers is still indispensable. If the humidity level is low, particularly red wines can develop in the best way. Furthermore, a drying device is able to fight condensation efficiently. Trotec has a series of high-performance drying devices...

    Additional information
  • Dehumidifying when storing raw tobacco

    The refinement of raw tobacco is considered a fine art. Far from the major tobacco industry smaller factories produce special mixtures with highly diverse flavours. But here, too, the firms usually have to purchase the raw tobacco, coming from many parts of the world, by container load. And since in most cases the product is not processed all at once, the tobacco leaves have to be stored away...

    Additional information
  • Carpet cleaning – Dehumidification in the drying room

    So the processes of cleaning and drying should be adapted to the individual fibres and material characteristics of the carpeting. As little as an incorrect drying temperature may already cause damage to the material.

    Additional information