EUBCE 2023 - Ingwald OBERNBERGER - Highlights of Technology Development of Small-scale Pellet Boilers and Stoves and Resulting Emission Reduction Potentials

Highlights of Technology Development of Small-scale Pellet Boilers and Stoves and Resulting Emission Reduction Potentials

Short Introductive summary

Small-scale pellet boilers and stoves are the most popular appliances for biomass-based heating in Europe. This leading position in the renewable energy market has been made possible by the continuous further development of combustion technologies towards more user-friendliness and ease of use as well as higher efficiencies and lower emissions. The vast majority of pellet boilers and stoves for private households are already characterised by emissions that are far below the limits of the EU Ecodesign Regulation. However, some technology developers and manufacturers have already initiated the next development step towards emission-free pellet combustion as far as CO, OGC and particulate matter (PM) are concerned. In this paper, technology highlights of small-scale pellet boilers and stoves, distinguishing themselves by further decreased emissions towards zero emissions level, shall be presented. Finally, comparisons of the emission factors of the current stock of applications with those of the state-of-the-art (SOA) and of the best available technologies (BAT) shall be made and emission reduction potentials for Austria by utilising BAT pellet boilers and stoves shall be evaluated.

I. Obernberger, BIOS Bioenergiesysteme, Graz, AUSTRIA
T. Brunner, BIOS Bioenergiesysteme, Graz, AUSTRIA