HEATING SYSTEM Russian patent published in 2000 - IPC

FIELD: power-saving practices. SUBSTANCE: the heating system comprises a heated room, fuel furnace with outlet and suction pipes, stopper, pipe connection with a cock controlling the air feed to the wind box space. Part of the air conduit feeding air from the outside to the wind box is made in the form of an interpipe space between the outlet and suction pipes, brought outside the room. The upper end of the suction pipe is located below the upper end of the outlet pipe. EFFECT: waste recovery of exhaust gases, reduced fire hazard. 1 dwg