When drying wood through high frequencies, fresh timber is being exposed to a alternating voltage field during the drying process. This stimulates the water molecules to vibrate. They heat up and evaoprate. The wooden components Lignin and Cellulose, on the other hand, are not stimulated to vibrate. Because of this selective warming process the wood stays unchanged in its material composition, whereas the warming of the entire wooden body may change the properties of the wooden components. As the wood differs from each type of tree to another in its vapour-dissipating structure, different drying programs are necessary.

The dissipation of vapour preferably takes place through vacuum technology.

They differ from three wave ranges:

In comparison to traditional processes

Advantages

• Drying ten times as fast as after the intake/outlet air when heated up
• especially effective with thick timber cross sections

Disadvantages

• high safety requirements, health hazard at failure to observe

Common short terms

Alternative process

...usually heat up the wood and differ especially in the discharge of steam

• Intake/outlet air
• Condensation
• diverse vacuum process