Your choices:
1 Process heat (150 - 1000 °C); 2 Biomass (solid); 3 Fuel: solid
| What is your resource? | What do you want to deliver? | What is the service the customer wants? |
| Biomass (digestible sludge) | District cooling | Comfortable indoor climate |
| Biomass (fermentable sludge) | District heating | Electricity |
| 2 Biomass (solid) | Electricity | Process cooling (< 0 °C) |
| Geothermal | Fuel: Gaseous | Process heat/steam (50 - 150 °C) |
| Sunshine | Fuel: Liquid | 1 Process heat (150 - 1000 °C) |
| Water | 3 Fuel: Solid | Process heat (> 1000 °C) |
| Wind | Local cooling (ind. house) | Transport |
| Residual oils/fats etc | Local heating (ind. house) |
In case temperature control is not absolutely crucial and the product is not too sensitive to the presence of soot and solid ash, like for casting, direct fuel firing can be used.
Wood pellet burners are commercially available up to 500 kW and can be mounted in furnace walls just like oil or gas burners.
In case briquettes or chips are the desired fuel, then major modification to the furnaces will be required and the system economy needs be evaluated in detail.