Biomass boilers burn wooden logs, chips, pellets
or other forms of biomass to produce energy to heat
water. The hot water can then be used for consumption
and heating through traditional radiators, or under
floor heating. The boilers are fully automatic
and control the amount of fuel and air supplied to the
combustion chamber. As a result they are highly
efficient with low emissions.
Biomass boilers can be operated using a range of
combustible fuels including high-energy crops, industrial
waste and agricultural waste, however most systems operate
using wood as its primary fuel source.
The most efficient biomass boiler fuel is wood pellet.
Wood pellets are made from compressed sawdust
and shavings. They contain high energy levels,
burn efficiently and produce very little ash. The
efficiency of the fuel means many appliances and wood
pellets are certified for use in smokeless zones in
Biomass boilers tend to better suit properties that
have the space to accommodate a fuel store to enable
the boiler to automatically feed its self. It
is recommended that between a 6 and 12-month stock of
fuel is maintained, which will require an area of stocking
unit of round 7m3 – equivalent to most LPG or oil storage
vessels. However boilers can also be manually
fed with bags of pellets.
Biomass Boilers offer a real sustainable alternative
to fossil fuel heating systems. Applying for Government
grants can significantly offset installation costs,
and once installed operating savings are currently around
50% compared with LPG and 30% compared to heating oil.
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