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Multi-Heat Stoker Boiler for
Wood Pellets & Grain.
Enjoy independence from
fossil fuels AND significant savings on your heating bills
with HS-Tarm's fully automatic Multi-Heat Boiler. Using domestic fuel
sources such as wood pellets and grain, it delivers up to
91% efficiency and can run for days on a single load of fuel in the hopper.
Multi Heat
Boilers are available in 15kw (51,200 btu/hr), 25kw (85,300 btu/hr) and 40kw (146,700 btu/hr). For larger applications
2 or more units can be linked together.
Any grains can be
used but wheat or rye at max 15% moisture are the most efficient.
HS Tarm Multi Heat Boilers
are like a heat factory. The inside of the burn chamber is lined with a
ceramic arch that is the same material used to line molten metal vats
to prevent the molten metal from melting the vat. This ceramic arch
and precise carburetion super heats the solid fuel to a gasification
state that allows a hotter burn. This enables the grain to be burnt
efficiently past the black and to the white ash state, and that is the
only way to burn grain without a lot of maintenance.
WOOD/GRAIN BURNING
UTILISES TWO DISTINCT FUELS:
1. The
combustible gases: These are
given off mostly in the beginning stages of a fire after the new fuel is
heated. These gases are visible as smoke and flame.
2. The fixed
charcoal: These are the glowing
coal-like red embers remaining after the gases have been driven from the
wood..
Scientists have found that
over 50% of the heat value in wood is in the form of these combustible
gases. The complete burning of these gases has long been the main concern
of engineers and designers seeking clean wood-burning devices.
HS-TARM engineers decided
that the best way to burn these gases was to use a firebox with two
distinct chambers. In the primary chamber (firebox) the fuel charge is
ignited. The burning occurs at the bottom of the firebox and the heat from
the fire bakes the fuel above releasing the gas from the fuel. The
combustion draft fan then blows these gases through the live embers and
into the superheated ceramic tunnel where secondary air is injected to
complete the burning process. 
These boilers burn so clean
and hot that virtually no visible smoke comes out of the chimney. The
picture shown here is a close-up of the 2000 degree flame that occurs in
the ceramic tunnel. How clean is clean? Tests have shown that the HS-TARM
boilers can burn with a smoke output of less than 1 gram per hour. This is
equivalent to the smoke released from one cigarette. HS-Tarm boilers burn
up to 100 times cleaner than an older woodstove.
This same technology is used in The HS-Tarm grain boiler:
A burn that is so efficient that
we not only burn down to the white ash which is mainly the minerals in
grain, we now have the technology in the HS-Tarm heat
refractory system to burn grain beyond black to the point where the
minerals on occasion look crystallized or even a bit melted like a ceramic
glazed clump. That is a hot fire,
which results in an incredible large heat source that is easy
to maintain and reliable to run virtually eliminating the need for a total
shutdown cleaning! You just need to remove the minerals or clinker on
occasion.
People who purchase the
HS-Tarm boiler are happy with how it burns and recommend that it's the best
on the market and worth every penny!
Key Advantages
Burns wood pellets and grain (wheat or rye are the
most efficient – but it can be any grade) which are economical, renewable
and come from domestic sources.
Very high efficiency: 89-91%. Constant heating
gives optimum building comfort.
Simple operation via a multifunctional digital
control on the front panel.
Variable heat output from 30-100%.
No storage tank required.
Automatic shut-off to prevent hopper burn back.
Automatic hopper refilling available.
Delivered completely assembled.
Easy to position: Top flue exit and reversible
doors provide maximum flexibility.
Sturdy construction features include acid-proof
stainless steel (AISI 316L) in the combustion chamber and 6mm (1/4")
water-cooled steel plates in the boiler interior.
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