How does a box type wood dryer work

The working principle of a box type wood dryer is mainly to control the temperature and humidity of the environment in which the wood is located, so that the moisture inside the wood gradually dissipates, achieving the goal of reducing the moisture content of the wood. Here is its detailed working principle:

Thermal energy transfer and air circulation

• Thermal energy generation and transfer:
• The fuel inside the dryer (such as coal, natural gas, wood, etc.) burns in the combustion chamber to generate heat energy.
• These thermal energies are fully absorbed through heat transfer media such as hot air, steam, etc., and evenly distributed throughout the material box of the dryer.
• Air circulation:
• The thermal circulation fan inside the equipment circulates the air in the entire furnace box, creating a high-temperature and well ventilated environment, thereby enhancing the drying effect.

temperature and humidity control system

• Temperature control:
• The dryer is equipped with a temperature control system inside, which can accurately control the temperature during the drying process.
• The temperature is usually controlled at around 180 degrees (depending on the type of wood and drying requirements) to ensure that the moisture inside the wood can quickly evaporate.
• Humidity control:
• The dryer is also equipped with a humidity control system that can monitor and adjust the humidity inside the drying room in real time.
• By supplementing fresh air and expelling humid and hot air, maintain an appropriate relative humidity in the oven to prevent wood from becoming moldy or spoiled due to high humidity.

Drying process

• Preheating stage:
• After entering the dryer, the wood is first preheated. The preheating stage is mainly to increase the temperature of the wood, so that the moisture inside the wood begins to evaporate.
• Constant temperature stage:
• During the constant temperature stage, the dryer maintains a certain temperature and humidity to continuously release moisture from the wood. This stage is a critical stage in the drying process, requiring stable control of temperature and humidity.
• Cooling stage:
• The cooling stage mainly involves gradually lowering the temperature to achieve equilibrium between the internal and surface temperatures of the wood, preventing deformation and cracking of the wood. The cooling process is usually slow to ensure that the wood can gradually adapt to the external environment.

Drying effect and advantages

• Drying effect:
• Box type wood dryer can achieve fast and uniform drying of wood, improve the processing efficiency and product quality of wood.
• By heating at high temperatures, all pests and their eggs inside the wood can be scalded to death, thus eliminating the potential harm to wood products.
• Advantages:
• Energy saving and environmental protection: Some box type wood dryers (such as air energy saving models) use the heat in the air for drying, without burning fossil fuels, reducing greenhouse gas emissions such as carbon dioxide.
• Intelligent control: Equipped with advanced intelligent control system, it can monitor the drying status of wood in real time and automatically adjust the drying parameters, improving the reliability and stability of the equipment.
• Wide applicability: Whether it is hardwood or cork, whether it is large-sized or small-sized wood, it can achieve fast and uniform drying effect.