Types Of Fuel; Information On Types Of Fuel - Spartherm Premium Assembly And Operating Manual

Types of fuel

3. Types of fuel
3.1

Information on types of fuel

Wood primarily consists of cellulose, lignin, resins, fats and
oils. Wood does not burn directly. the components of wood
become gaseous at different temperatures and burn up if
enough oxygen is available.
using fuel with a residual moisture of > 20 % will lead to
decreased output and increased emissions.
good, fast combustion and good gas release are crucial for
problem-free operation of the unit.
bark prevents moisture from escaping. gas release is only
ensured at "injured" sections of wood, making it necessary to
split the wood.
if the temperatures required for gas release and clean
combustion are not reached, this will interfere with combustion.
the unburned substances will negatively impact the
environment and will adhere to the stove system as deposits
(e.g. soot, tar). these deposits increase the effort required for
cleaning and may damage the stove system.
Hardwood is particularly suitable as firewood. it burns slowly
with a calm flame and turns into embers that glow for a long
time.
softwood is rich in resin, burns faster and has an increased
tendency to generate sparks.
5 We recommend beech wood as the ideal fuel.
18 Assembly and operating manual | Premium & Lean | 06.2023 | en
§ According to din en 13229 a combustion period of
45 min in a time-limited fireplace requires a fuel volume of
2.2 – 3.7 kg of wood (depending on the model).
6 "2.8 technical data" (page 10).
3.1 / 1
2.2 kg of wood corresponds to two average logs (length
170 – 330 mm, width / height approx. 80 mm).
1 kg of beech wood generates an output of approx. 4 kW.
Compressed wood pieces have an approx. 20 % higher output.
~ 80
~ 80
170 – 330