Wood drying equipment Jinlong drying (wood drying equipment)

Wood drying equipment is a kind of equipment for drying wood. This kind of wood drying equipment uses external air to dry, instead of using coal or boiler to provide capacity for external drying equipment. This dryer equipment will not discharge pollutants during the drying life, which is green and environmentally friendly. So how does this drying equipment dry materials for us? What is the principle of drying? Let's take a look at it today.

Drying principle of wood drying equipment

In the refrigeration cycle, the refrigerant goes through the following four processes:

Compression process: Low temperature and low pressure refrigerant gas is compressed into high temperature and high pressure gas by compressor. At this time, the work done by the compressor is converted into the internal energy of refrigerant gas, which makes the temperature and pressure rise, which is called adiabatic process in thermodynamics.

Condensation process: the high-temperature and high-pressure refrigerant gas from the compressor flows through the condenser, and is continuously released to the outside by wind or water, and condensed into medium-temperature and high-pressure refrigerant liquid. When the refrigerant is liquefied, the temperature J is low but the pressure is constant, which is called isobaric process in thermodynamics.

Throttling process: the medium-temperature and high-pressure refrigerant liquid coming out of the condenser becomes low-temperature and low-pressure refrigerant liquid after throttling by the throttling device. In thermodynamics, it is called an isenthalpic process.

Evaporation process: the low-temperature and low-pressure refrigerant liquid coming out of the throttling device flows through the evaporator, and the heat is continuously absorbed into the room by wind or water, and evaporated into low-temperature and low-pressure refrigerant gas. The absorbed heat becomes the latent heat of the refrigerant. Although the temperature does not rise much, the internal energy increases a lot. Because the pressure changes very little, it is called isobaric process in thermodynamics.

These four thermodynamic processes constitute an inverse Carnot cycle.

Drying process of wood heat pump drying equipment

1, preheating stage:

According to the tree species, wood thickness and temperature at Z, don't heat up too fast;

2, desiccant intermediate treatment stage:

Dehydration, so that the temperature of dry and wet balls is gradually reduced to the temperature and humidity required in the first stage of drying benchmark D, and cracking and bending should be prevented slowly;

3. The final stage of balance and humidity control:

Q removal removes uneven moisture content in wood drying,

4. Cooling treatment:

Turn off the heating, turn on the exhaust and keep the fan running until the wood gets cold.

But the outdoor temperature is about 20℃ higher to prevent the wood from cracking;

Summary:

Wood heat pump drying equipment is a new type of drying equipment, which absorbs the external air to dry. There is no need to burn materials during drying, and there is no need for personnel to guard during drying.