Fuel - LA NORDICA LNK15 Manuel Utilisateur

fUEL

The recommended type of fuel is dry wood having a diameter of 80-150 mm, aged for minimum 2 years, with a moisture content not
exceeding 15-20%, heat output of 4.7 kW/kg and a log length of 500 mm.
The dimensions of the fuel to use can be found in the section regarding "TECHNICAL SPECIFICATIONS".
Basic data regarding wood.
The graph below indicates the interdependence between the water content and thermal power of the fuel. The useful energy volume
of the wood drops significantly in relation to the amount of water.
Boilers are not suitable to burn wood containing less than 12% water since gasification below this value cannot be controlled
Inferior calorific power of the main types of wood
Type of wood
Fir
Pine
Larch
Turkey oak
Poplar
Elm
Birch
Oak
Beech
We do not recommend using fresh wood since it will generate a lot of smoke, will radically shorten the life-span of the boiler and flue,
and reduce the boiler's power by 50%.
Calorific power per 1 kg with 20% moisture
kcal kJoule
3,900 16,250
3,800 15,800
3,800 15,800
3,600 15,100
3,500 14,760
3,500 14,760
3,750 15,500
3,600 15,100
3,450 14,400
ENgLIsH
kW/kg
4.5
4.4
4.4
4.2
4.1
4.1
4.3
4.2
4.0
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