Calorific values
Calorific values - wood moisture 20%.
| Wood | Calorific value kWh/kg | Energy content kWh/bulk-m 3 | Energy content kWh/cloth-m 3 |
| Birch | 4.15 | 1010 | 1700 |
| Pine | 4.15 | 810 | 1360 |
| Spruce | 4.10 | 790 | 1320 |
| Alder | 4.05 | 740 | 1230 |
| Aspen | 4.00 | 790 | 1330 |
Heater heating efficiency (%)
Open fireplace (directly to the chimney)
< 30%
Fireplace stove (modern)
80-85%
Stove, Oven
50-70%
Heating the fireplace
Burning wood is an environmentally friendly method of heating.
Wood is a carbon-neutral fuel in terms of climate impact.
The carbon dioxide released during burning is bound to the growth of new forests and does not increase the amount of carbon dioxide in the atmosphere.
Small-scale wood burning produces particulate matter emissions,
which can be significantly reduced with a few simple measures.
Fireplace heating instructions
Always follow the instructions provided by the fireplace manufacturer first.
- USE DRY FIREWOOD. IF STORED OUTDOOR, BRING IT INSIDE A COUPLE OF DAYS BEFORE USE
- OPEN THE SMOKE DAMPER.
- EMPTY THE ASH TRAY. IF THE ASH REACHES THE GRID, THERE IS TOO MUCH ASH.
- PLACE THE WOOD IN THE HEATING STOVE WITH AIR GAPS. AT LEAST 1/3 OF THE HEIGHT OF THE STOVE MUST BE FREE SPACE.
- IGNITE FROM ABOVE. USE FIRE ATTACK.
- ADD WOOD ONLY AFTER THE PREVIOUS ONES HAVE ALMOST BURNT THROUGH.
- CLOSE THE SLIDER ONLY AFTER THE EMBERS HAVE DARKENED.
Firewood is needed in the amount of 1 kg per hundred kilograms of the fireplace's weight .
For example, if today the fireplace weighs 1500 kg,
then 15 kg of firewood is needed to heat the fireplace.