Wood gasifier heating boilers
Small Biomass Boilers for Wood & Waste Wood , Wood Logs, Wood Chips
Destinctions should be made between manually fired boilers for fuelwood and automatically fired boilers for wood chips and wood pellets. Manually fired boilers should be installed with storage tank so as to accumulate the heat energy from one infeed of fuel (a full magazine). Automatic boilers are equipped with a silo containing wood pellets or wood chips. A screw feeder feeds the fuel simultaneously with the output demand of the dwelling.
Great advances have been made over the recent 10 years for both boiler types in respect of higher efficiency and reduced emission from the chimney (dust
and carbon monoxide (CO)). Improvements have been achieved particularly in respect of the design of combustion chamber, combustion air supply, and the
automatics controlling the process of combustion. In the field of manually fired boilers, an increase in the efficiency has been achieved from below 50% to
75-90%. For the automatically fired boilers, an increase in the efficiency from 60% to 85-92% has been achieved.