Wood chips or small pieces of wood are obtained after cutting, where an unused part of logs is ground and turned into wood chips. Since we use thick sawblades, almost 50% of wood mass goes to wood chips and sawdust. An average size of wood chips is 3 to 5 cm2, whereas the moisture is maximum 35% (G30-G50, W35). Wood chips is used as energy and it can be applied in furnaces of 50 KW to 10 MW power. Its combustion is efficient and it is put into the same energy level with oil and gas, while its price is cheaper.
The same way as wood chips, sawdust is used for heating, however, not directly as a product. It is further processed and crushed up into the level of wood powder, pressed using specialised pressing machines to produce wood pellet. The caloric value, economic cost-effectiveness, environmental safety and simplicity of usage are the main advantages of this energy.
Prior to cutting, logs are debarked with all the bark taken off. Bark is further used as wood biomass. It may be used directly and without processing in heating boilers, it is cheaper than pellet and briquette and particularly cheaper than heavy fuel oil, fuel oil and gas. Bark can also be used to control weeds as well as to cover the land to achieve a beautiful decorative effect.