GLIWICE ul. Piaskowa 26
 | POPLAR The wood which has rather law energetic value. Ideal for kindling. |
 | BIRCH. Birch wood has high energetic value, is suitable for kindling as well for keeping flame in hearth. It burns with intensive flame. |
 | BEECH. Dense and hard wood which has very high fuel value and provides longer consuming. Suits for all kinds of fireplaces. |
 | OAK Perfect fuel – is highly valued for its dense, burns slowly and keeps flame in hearth for a very long time |
 | ALDER. Wood which has lower energetic value. The great merit of alder is that it burns even it has high moisture content. Alder wood dries fast. |
 | ELM. Elm wood is hard and has high fuel value, it contains low water content. |
 | HORNBEAM. Very hard wood with the highest fuel value – higher than beach wood and oak wood. |
| Kind of wood | Fuel value [kWh/stere] |
| hornbeam | 2200 |
| beech | 2100 |
| oak | 2100 |
| ash | 2100 |
| robinia-acacia | 2100 |
| birch | 1900 |
| elm | 1900 |
| maple | 1900 |
| alder | 1500 |
| willow | 1400 |
| poplar | 1400 |
| moisture content [%] | beech ,oak | birch | alder |
When analyzing the table, remember that that in freshly cut wood the water content ranges from 50-60%. Therefore, in the case of burning with wet wood, the energy generated during its combustion is mainly used for so-called, boiling-drying, wood, and then it translates into the actual heating value. It can be assumed that the real calorific value of wood with a moisture content of 15% is almost twice as high as the calorific value of wood with a humidity of 50%.. |
|
| 0 | 10,83 | 9,69 | 7,98 | ||
| 15 | 10,59 | 9,47 | 7,80 | ||
| 20 | 10,49 | 9,38 | 7,73 | ||
| 25 | 10,37 | 9,28 | 7,64 | ||
| 30 | 10,24 | 9,17 | 7,55 | ||
| 35 | 10,09 | 9,03 | 7,44 | ||
| 40 | 9,92 | 9,87 | 7,31 | ||
| 45 | 9,71 | 8,69 | 7,16 | ||
| 50 | 9,46 | 8,47 | 6,97 | ||
| 55 | 9,16 | 8,19 | 6,75 | ||
| 60 | 8,78 | 7,85 | 6,47 |
GARDENS