Design And Study On Hot Water Boiler Of Biomass Briquettes

This paper aims to getting the biomass briquettes fuel burning equipment to the market and realizing commercial produce. First the study analyzes the calculation reliance of the 1st hot water boiler of biomass briquettes fuel, then aiming at the problem of it, such as higher hearth temperature, higher smoke temperature improved design is conducted and another smaller hot water boiler of biomass briquettes fuel is manufactured. Under 4 states thermal characteristics experiment is conducted, the highest combustion efficiency is 94.84%, the highest thermal efficiency is 78.2%, and other kinds of thermal characteristics parameter attain design requisition, the deficiency of the 1st generation is overcome. Comparing to the 1st generation, all kinds of thermal loss, thermal efficiency and combustion efficiency have the similar variance law.(1) The highest thermal efficiency of the new type biomass briquettes fuel burning equipment is 78.2%,but the highest thermal efficiency of the first type biomass briquettes fuel burning equipment is 69.3%, after improved design 9% has been increased;(2) The heat elimination loss of improved design has apparently decreased. Before improved design the heat elimination loss is 12.3%, after improved design the heat elimination loss is 7.9%, after improved design 4.4% has been saved;(3)The exhaust smoke heat loss of improved design has apparently decreased. Before improved design the exhaust smoke heat loss is between 16.8%, after improved design the exhaust smoke heat loss is 10.09%, after improved design 7% has been saved;(4) The thermal efficiency of improved design has increased, the pollutant discharges, the exhaust smoke temperature and the hearth temperature of improved design has apparently decreased;(5) The new type biomass briquettes fuel burning equipment is low prices and easy shopping by economic evaluation; So the market potential of the new type biomass briquettes fuel burning equipment is big and the prospects for developmentof the new type biomass briquettes fuel burning equipment is broad.