Farm Ireland

Wednesday 17 January 2018

Biomass centre wood chip

In addition to the wood pellets stored and sold from the Biomass Centre in Grassau for small domestic heating systems, the centre also stocks two distinct types or grades of wood chip. This wood chip is a far rougher material than the uniformly manufactured wood pellet and is used in larger heating systems.

On site, the lower grade wood chip is consumed by their own heat plant at a rate of 40 to 50 cubic metres per day with the burner running at near maximum capacity of 3MW.

In the summer this is greatly reduced as the burner runs at a mere 0.3MW. Local farmers or contractor bring in the woodchip to the Biomass Centre, it is supplied typically at a moisture of up to 45pc. This is then dried down to about 20pc using the heat recovered from the burner's exhaust which is blown up through the material from vents in the floor. The drying process can take up to two weeks but there is plenty of storage capacity on site.

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