10
User guide (1.1)
© 2017 Brunner GmbH
500 kg dried wood
Water content 30%
500 kg x 3.3 kWh/kg = 1650 kWh
500 kg dry wood
Water content 15%
500 kg x 4.1 kWh/kg = 2050 kWh
What amount of heat will I get when
buying wood per volume (1 cubic
meter = 1 m3)?
1 m3 freshly cut wood
Water content 50%
1286 kWh
1 m3 dried wood
Water content 30%
1518 kWh
1 m3 dry wood
Water content 15%
1550 kWh
Most suitable for use in open fireplaces are all types of hardwood, like
beech or birch. Softwood species (conifers) have a closed-cell structure
which is bursting during combustion, causing glowing embers to be thrown
out of the fireplace. Hardwood is burning more calm and evenly.
You can control the heat radiation intensity by volume of wood and the in-
tervals for stoking up.
Adjusting the heat by reducing the volume of combustion air is wrong! If
there is not enough combustion air available, the energy contained in fire-
wood cannot be completely released. At the same time, the emissions are
rising due to unburned particles.
Too much of firewood or inappropriate fuel types can cause overheating
and damage.
No kind of waste shall be burned in a fireplace!
Waste on fire = Toxins in your garden!
