Rojek KTP gasification boilers are designed for the burning of fire wood , short piece wood , fresh sawdust , wet chips and other wet biomass.   The KTP range offer efficiencies of 75 - 78% .The original design of the boiler fireplace uses double combustion , enabling high combustion efficiences , practically complete combustion and minimum emissions. It is not necessary to burn seasoned wood in this range of boilers , although fuel efficiency and boiler output do decrease with using wood with a higher moisture content. The boilers are available in 20kW , 25kW , 30kW , 40kW and 49kW models.   swansolar.eu © Swan Solutions de Propriete 2012