Due to the zone-controlled combustion process the temperature of the grate is kept low and the temperature in the second combustion phase is maintained at a higher temperature. The low grate temperature allows a greater variety of biomass fuels with low as melting point to be processed. This might include wood (with leaf), compost, straw, chaff and similar biomass waste products.
High efficiency with low emissions
The zone-controlled combustion process results in a high efficiency, complete combustion, with low emissions of CxHy, CO and NOx. The high efficiency is achieved by minimising stack losses and keeping the flue gas flow low. The low flue gas flow is achieved through optimal combustion that resulting in O2 concentrations of 3.5% to 5% in the flue gasses.