Timber storage / Wood drying

TIMBER Recusorb-dehumidification/wood drying keeping lumber in permanently good condition

Hygroscopic material, when exposed to ambient air, sooner or later establishes a balance with the atmospheric conditions. It equals its temperature and moisture with the surrounding. In particular wood, that is stored between cutting and drying, is sensitive to quality losses if not properly stored. Since the requirements for quality constantly rises, controlled supply of dry air while storing wood is required to ensure high quality.

Fluctuating weather conditions while drying wood
Pre-dried lumber, that is, for example, used for production of furniture, must not exceed moisture content of 8 – 9%. Or wood used for doors and windows, should not exceed moisture content of 12%. If stored under uncontrolled conditions, considerable quality fluctuations may occur. The wood may reshape if stored in varying moisture conditions. This may affect the further processing and jeopardize the quality. Right up to the committee, so that there is a risk that the client no longer decreases the goods and the sawmill remains sitting on his goods.

Controlled humidity, consistently high quality
The required to maintain the drying state of the wood humidity is practically independent of the temperature in the warehouse. A heating is therefore not useful in the wood drying. To ensure a constant dehumidification even at low temperatures throughout the year, be of K.I.R.S.C.H. used dehumidifier for this application. These operate on the TIMBER Recusorb-principle, an energetically optimized sorptive dehumidification. The heart of this technology is the world’s most significant from Silica Gel, and more metal silicate compounds developed SSCR-U rotor. The TIMBER Recusorb works compared to classical sorptions-principle with additional internal heat recovery. The incoming regeneration air (dark green) takes in the washing zone on the residual regeneration energy of the rotor, is preheated and reduced water content. Characterized the regeneration heater consumes less energy, and the rotor is regenerated better corresponding to the lower regeneration air humidity.

TIMBER / RECUSORB-dehumidification

The operating costs for dehumidification are very low. Alternatively, as the regeneration energy – subject to availability at the site – electricity, steam or gas be used.


The design of TIMBER Recusorb follows the desired humidity (for example, 40% RH) for storage and by the size, design and location of the warehouse. By minimizing the opening times of the hall door (fe. Speed ​​door) and by appropriate arrangement of the air exchange in the warehouse the required dehumidification can be minimized.

The operating costs are reduced!

The required relative humidity is maintained by TIMBER Recusorb-dehumidification constant at 40%, regardless of temperature and season.

Energy optimization / control

The dehumidification of TIMBER Recusorb is controlled continuously by measuring the relative humidity in the warehouse. The desired humidity for storage of lumber with a residual moisture content of 8% is as 40% RH On days when the relative humidity of the outside air is already below 40%, is therefore not dehumidified and consumes no energy. Thanks to the TIMBER Recusorb dehumidification installed in the warehouse both domestic and foreign customers with furniture and joinery wood with very low water content can now be supplied.

TIMBER – benefits K.I.R.S.C.H. technologies

  • Production quality assurance for furniture and joinery wood
  • High delivery reliability and punctuality
  • The balance of the remaining moisture content immediately after the pre-drying in the drying chamber is optimal because the humidity in the warehouse is in equilibrium with the desired dryness of the wood
  • Ensuring the correct moisture content of the wood, regardless of the storage time. After equalizing the drying condition of the wood remains constant unchanged by the “dry” storage at the right humidity
  • Before further processing, no drying is required
  • No unnecessary power consumption by the drying to lower residual moisture content, to compensate for the dampening renewed receiving of the timber during storage
  • Consistent degree of drying of the wood, even with large delivery volumes
  • No deformation due to uneven dampening consumption in wood during storage
  • Constant temperature and humidity, regardless of the season

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