HOT-WATER-TUBE BOILER Russian patent published in 1995 - IPC

FIELD: boiler engineering. SUBSTANCE: additional heat-insulated chamber, used for external adiabatic afterburning of coal dust and gas combustible matter of fuel, is provided above the furnace space. Additional internal side walls are provided with ports at the bottom. The ports connect the furnace space with lowering convective wells. The outer walls and floor have enhanced heat insulation. Pipes of radiation heat surfaces, used for deflecting raising convecting jet to the center, are provided with aerodynamic flaps. EFFECT: enhanced efficiency. 3 dwg