HOT-WATER BOILER Russian patent published in 1995 - IPC

FIELD: hot-water boilers. SUBSTANCE: hot gases obtained in furnace 5 transfer their heat to water flowing in water jacket 4 in flat coils installed in jacket 4 in areas adjoining the rear and side walls of furnace 5. Arrangement of coils in the above areas provides for stalling of the boundary layer of retarded water from the walls, since the water flow running through jacket 4 in the mentioned areas is turbulized by the coil tubes located there, which enhances the heat pick-up from the walls. Jacket 4 is connected to the heating system, and the coils to the hot-water supply system. EFFECT: enhanced efficiency. 2 cl, 2 dwg