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Biomass
Wood Pellets
Wood pellets are typically made from sawdust residues from the wood-processing industry.
They are compressed, so that the sawdust is held together by the lignin contained in the wood.
When burnt, only 0.5-0.7% of residue remains in the form of ash.
Wood pellet systems are particularly effective in the range 15-1000kW. The homogeneous
nature of the fuel results in very even burning and a very high efficiency. Pellet
deliveries also tend to be free from foreign bodies, which might otherwise interfere
with the feed system to the boiler. In our planning work, we dimension pellet silos such
that they only need stocking up once a year. The delivery of wood pellets can, thus, be
compared to the delivery of heating oil to oil-fired heating systems.
So far, we have installed over 30 wood pellet and wood chip heating systems, the majority
with district heating networks.
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