, pellets are the pressed wood production waste in the form of a cylinder. Their size is 6-8 mm in diameter and their length is from 5 to 70 mm, depending on the raw materials and equipment used for the production of pellets. The raw material for the production of pellets is:
- Wood waste, bark;
- Sunflower husks;
- Husks of grain crops;
- Peat and so on.
Pellets’ humidity is 7-10%, which allows them to be successfully used in pellet boilers or conventional solid fuel boilers with installed pellet burner. The Density of pellets is 1.5, therefore, pellets sink in water. The calorific value of 1 kg of pellets = 5 kWh, which is about 1.5 times greater than that of wood.
Pellets are widely used as a fuel for automated boilers, both domestic and industrial level, due to the fact that they have a significant environmental component, with a calorific value comparable with coal, and relatively cheap, so pellets are a viable alternative to traditional fuels such as diesel, coal and wood. Only competitor may be natural gas supplied through conduit.
We can obtain the following pellets:
Pellets - production Lithuania - 50% spruce, 50% pine
Pellets - production Ukraine - 70% beech, 30% spruce