OUTSIDE CONDENSATION BOILER Russian patent published in 2012 - IPC F24H1/00 

FIELD: power engineering.

SUBSTANCE: outside condensation boiler comprises a hydraulically and thermally insulated casing with an internal gas burner device, a heat exchanger with direct and return lines, a smoke stack, direct and return lines of a building heating system. Additionally it is equipped with a heat exchanger of a boiler's condensate part and a circulating pump, at the same time the heat exchanger of the boiler's condensate part is arranged in the lower part of the smoke stack and is connected to the return line of the building heating system and the return line of the boiler, and the circulating pump is installed in the return line of the building heating system with the possibility to provide forced circulation of coolant, besides, in parallel the heat exchanger of the boiler's condensate part is connected to direct and return lines of the boiler via check valves.

EFFECT: increased boiler capacity, higher efficiency due to additional energy capture during condensation of water vapours.

1 dwg