Firstly, it is necessary to understand a little about the moisture carrying capacity of air. A cubic metre of air at 20 deg. centigrade and 100% relative humidity will hold around 14 grams of water. If you were to heat the same cubic metre of air up to 70 deg. centigrade it would be holding around 400 grams of water at 100% relative humidity.

Unmatched Stability The thermal modification process removes all moisture from the wood cells, making it highly stable and resistant to warping, twisting, and bowing.

A building or metal container specially used for drying wood that can adjust and control temperature, humidity and air flow speed according to process requirements. There are two categories: continuous drying kiln and periodic drying kiln.

The carbonization process of carbonized wood is divided into the following three processes: Step 1: Heat up and dry at high temperature in the cellar Heating up, the kiln temperature rapidly rises to 100 ° C.

Thermal modification is currently the most successful and economically significant wood modification method in terms of industrial promotion and application.

Precautions during the operation of steam drying kiln: The steam pressure supplied to the drying kiln is generally controlled within 0.3~0.5MPa, and it is best to stabilize at around 0.4MPa. If the steam pressure is unstable, it will affect the stability of the temperature and humidity of the medium in the drying room, making it difficult to control the temperature and humidity of the drying medium.

Broadly, there are two methods by which wood can be dried: natural drying or air drying, and artificial drying. Wood drying kiln provides a means of overcoming the limitations imposed by erratic weather conditions. In kiln drying as in air drying, unsaturated air is used as the drying medium. Almost all commercial woods of the world are dried in industrial kilns. A comparison of air drying, conventional kiln and solar drying is given below:

Below for everyone to introduce wood drying equipment of energy conservation and consumption reduction method: 1. The application of inverter in the wood drying equipment, greatly save energy in drying equipment, using fan iscompared commonly big, and the fan are almost continuous operation, after using the inverter can save 30% energysaving. After the use of frequency converter, on the other hand, the overall equipment will drop a lot of noise, and prolongs the service life of wood drying equipment.

Evaporation of moisture from the wood surface always takes place at a certain temperature, humidity and air velocity. Under normal circumstances, the humidity of the air in the drying kiln is always less than 100%, while the temperature of the air is much higher than normal temperature. Therefore, the equilibrium moisture content of the air is lower than that of the wood surface, and the moisture on the wood surface evaporates into the air. How quickly water evaporates from the wood surface depends on the temperature and humidity of the air. When the air temperature rises or the humidity decreases, the evaporation rate of water on the wood surface is accelerated; on the contrary, the lower the air temperature, the greater the humidity, and the slower the evaporation rate of surface water.

Wood drying refers to the process of using external energy to convert water in wood into steam and expel it. The drying of wood can be divided into two categories: natural drying and artificial drying.