Biomass Boiler Systems
Biomass Pellets
Pellets are made from a wood material which is
dried and compressed to a low moisture level
with no additives. The resulting fuel has a high
calorific value or heat content and is clean,
burning easily and efficiently to give a constant
heat. Biomass boilers differ from solid fuel
boilers as they are fully automatic, using
advanced controls to regulate the amount of
fuel being delivered to the boiler to match the
heat demand. The process produces ash, so most Biomass boilers require regular cleaning and
maintenance, however the boilers installed by DalesRenewables are self-cleaning and only need a
manual clean once a year.
When the boiler is started, the auger feeds the pellets from the hopper into the burner where it is lit by
an ignition element. The burner controls the feed rate of the pellets to achieve the required set
temperature. The fan within the boiler then propels the hot gas into the primary heat exchanger. The
resulting heat energy is transferred to the water for the central heating system and this is finally
circulated around the house.
About Biomass Boilers
The use of biomass in heating systems is beneficial because it uses agricultural, forest, urban and
industrial residues and waste to produce heat and electricity with less effect on the environment than
fossil fuels. This type of energy production has a limited long term effect on the environment because
the carbon in biomass is part of the natural carbon cycle; while the carbon in fossil fuels is not, and
permanently adds carbon to the environment when burned for fuel.
Biomass Boilers are very environmentally
friendly: they burn wood pellets made from
compressed waste sawdust or from raw materials
sourced from sustainably managed forests in the
UK. The sawdust is a waste product from
sawmills and classed as a renewable, carbon
neutral fuel source because trees absorb as much
CO2 when they are growing as they emit when
they burn.
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