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Wood pellets

Wood pellets are a refined, homogenised form of wood fuel produced from by-products from saw mills and other wood processing plants. Their consistent properties make them an ideal fuel for automatic heating systems from small domestic to large industrial applications.

Properties of pellets

Wood pellets are cylindrical with a diameter of 6 to 12mm and length of 10 to 30mm. Pellets over 25mm in diameter are termed briquettes and are used primarily in industrial applications. Since pellets are manufactured from untreated feedstock and burn in a predictable manner, they produce very low emissions in properly operating heating plant.

Pellets are low in moisture, 10% or lower, and have a high energy content. With dry raw materials, the production process uses about 2% of their energy content. This rises to about 10% where the raw material is unseasoned timber co-products and needs pre-drying.

Pellets take less storage space than other wood fuels, but require about three times that needed for oil containing the same energy.

Typical properties

Calorific value
4.2 - 4.9 kWh/kg

Bulk density
500 - 700 kg/m3

Moisture content
5% - 10%

Ash content
0.5% - 6%

Diameter
6mm - 12mm

Length
10mm - 30mm

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Ymddiheuriadau, ond nid yw cyfieithiad Cymraeg y tudalen hwn ar gael eto. Dyma'r testun Saesneg: Wood pellets Wood pellets are a refined, homogenised form of wood fuel produced from by-products from saw mills and other wood processing plants. Their consistent properties make them an ideal fuel for automatic heating systems from small domestic to large industrial applications. Properties of pellets Wood pellets are cylindrical with a diameter of 6 to 12mm and length of 10 to 30mm. Pellets over 25mm in diameter are termed briquettes and are used primarily in industrial applications. Since pellets are manufactured from untreated feedstock and burn in a predictable manner, they produce very low emissions in properly operating heating plant. Pellets are low in moisture, 10% or lower, and have a high energy content. With dry raw materials, the production process uses about 2% of their energy content. This rises to about 10% where the raw material is unseasoned timber co-products and needs pre-drying. Pellets take less storage space than other wood fuels, but require about three times that needed for oil containing the same energy. Typical properties Calorific value 4.2 - 4.9 kWh/kg Bulk density 500 - 700 kg/m3 Moisture content 5% - 10% Ash content 0.5% - 6% Diameter 6mm - 12mm Length 10mm - 30mm <<< Previous: Fuel storage Next: >>> Quality Standards	CHWILIO Chwilio am gyflenwr Ar werth/Yn eisiau Member's Area Yn yr adran hon Technegol Wood fuel for a better landscape Sustainability Local jobs for local people The cleanest fuel Where to buy wood fuel How to burn wood Chimneys Wood fuel costs Logs & Firewood Wood Chip Supply options Fuel quality Classification Boilers Fuel handling Fuel storage Wood pellets Quality Standards Advantages Manufacturing Market Development Burning Pellets Storage and Delivery Electricity Case Studies External links -->
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