Introduction to the working principle of Wood Chip Dryer

The basic principle of wood drying equipment: Wood Chip Dryer the water in the wood is mainly free water and absorbing water. The water present in the large capillary system composed of cell cavities is called free water,Wood Chip Dryer and its increase or decrease only affects the weight of wood,Wood Chip Dryer but not the properties of wood; the water present in the microcapillary system composed of cell walls is called absorbing water,Wood Chip Dryer which The changes of wood not only cause shrinkage and shrinkage of wood,Wood Chip Dryer but also affect other physical and mechanical properties of wood.

Dry wood is to remove the free water and absorbing water in the wood in order to comply with different uses and quality requirements.Wood Chip Dryer There are many ways to dry wood,Wood Chip Dryer but the basic principle is common, that is, the application of a gradient of moisture content along the thickness of the wood,Wood Chip Dryer and the difference in partial pressure of water vapor formed after heating is large inside and outside,Wood Chip Dryer to promote the water and liquid The two methods of vapor state continuously move from the inside to the outside,Wood Chip Dryer and evaporate to the outside through the wood surface;Wood Chip Dryer the internal water movement intensity should be in harmony with the surface water evaporation intensity to make the wood dry from the surface and the inside in balance.