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Sawdust briquettes are an effective and ecological type of solid fuel, with a considerably higher calorific value than that of firewood. Briquettes are a suitable fuel for modern central heating boiler, firewood stove, as well as a fireplace or a countryside stove.

Fuel briquettes of different natural materials are available on the market (peat, straw, conifer needles, tree bark), however, the most popular type of briquettes is sawdust briquettes. These pellets are characterised by a high calorific value and the heat of combustion, which is useful in long-burning stoves and heating boilers. Meanwhile, if you use wood pellets in stoves of the “old days”, or firewood stoves, you must be sure not to overheat them. One tonne of briquettes is equivalent to approximately 3 cubic metres of firewood and, in contrast from wood, which must be cut, dried and takes up a lot of space, they are ready for use and do not occupy a lot of space.

Sawdust briquettes offer the following advantages:

• It is a completely natural fuel, which does not contain chemical additives, impurities or glues;
• It is approximately 15% drier than firewood, the content of moisture is 10% lower;
• Calorific value of briquettes is higher than that of firewood, for instance, 1.5 times higher than that of birch firewood;
• Briquettes leave less ash, the heating process is cleaner and fire safety is higher;
• There are less hazardous emissions;
• The amount of smoke is comparatively much lower, as well as the risk of blocking of smoke passages;
• High heat transfer and long time of burning (depending on the type of wood - from 2 to 10 hours), which ensures homogeneous heat distribution and warm premises for longer periods of time;
• They are easily transported and stored;
• Briquettes may be combined with firewood.

Disadvantages of briquettes:

• Fuel briquettes rapidly absorb moisture, they may disintegrate, which results in losing the opportunity for their use;
• Take care to prevent overheating - excessive heat may damage the stove.

How are sawdust briquettes produced?

Fuel briquettes are made of dry sawdust or shavings of coniferous or deciduous hardwood. The sawdust is exposed to high pressure at high temperatures, which makes the mass dense. As a result of pressing, the timber mass produces a natural binding substance - lignin, which helps briquettes maintain their shape and strength.

The briquettes differ in terms of shape - they can be rectangular, square, round or ring-shaped. Practice shows that briquettes of round shapes burn faster than angular shape briquettes.

To ensure that the quality of fuel briquettes is sufficiently high, a briquette may be thrown onto the floor. Briquettes of good quality do not disintegrate as a result of impact, they have a strong, dense structure, which confirms the high quality of compression.

Pre-requisites for product selection:

• Type of wood that the fuel briquettes have been made of - aspen and birch briquettes have a higher heat transfer coefficient;
• Shape and size - depends on the type of the stove, the size of the combustion chamber and the conditions of storage;
• Manufacturer’s instructions on the packaging - moisture content, calorific value, density, ash content.

IMPORTANT – open package of woodchip briquettes must be stored in dry premises preventing the access of moisture to the product. When transporting the briquettes, take care to keep the packaging intact.