Heating with pellets - a carbon-neutral fuel
Wood pellets for heating are the eco-friendly alternative
Pellets for heating are made by compressing wood shavings and sawdust from untreated wood. An enormous amount of wood waste is produced everyday in the wood processing industries, which is sustainably repurposed. The amount of CO2 emitted during the combustion of the wood pellets is balanced out by the amount of CO2 absorbed by the trees while growing the wood used for the biomass fuel. This balance is outstanding compared to fossil fuels like oil or gas.
Advantages of using pellets for heating
- Crisis-resistant local fuel
- Short transport routes
- Easy refill of the wood pellet storage with pellet bags or pellet fuel trucks
- Dust-free and odourless refilling
- Low place requirements for the storage
- Efficient and Eco-friendly pellet boilers
Compared to fossil fuel, electricity, or heat pumps, using wood chips or pellets for heating is the best choice.
Most important quality-criteria for wood pellets
- Lowest possible dust content
- Hard and shiny surface of the pellets
- Natural wood, no additives
Quality standards for wood pellets for heating
Pellets for heating are standardised according to the ÖNORM M 7135 or EN 17225-2.
| Specification | ÖNorm M 7135 | EN 17225-2 Class A1 |
| Heating value | > 18 MJ/kg = 5 kWh/kg | 16,5 < 0 < 19 MJ/kg = 5 kWh/kg |
| Weight | 650 kg/m³ | > 600 kg/ m³ |
| Diameter | 6 mm | < 6 + - 1,0 mm |
| Length | 5-40 mm | 3.15 < L < 40 mm (99 %), L < 45 mm (1%) |
| Water content | w < 10% | w < 10% |
| Dust content | < 1% | < 1% |
| Ash content | < 0.5 % | < 0.7 % |
| Energy demand for production: approx. 2.7% of energy content | ||
Attention:
Are you heating with pellets? Please consider the quality when purchasing or receiving wood pellets and look for the quality proof according to the ÖNORM M 7135.