Fan-assisted recuperator for fireplace - has matrix of upward-inclined air heating tubes mounted in chimney flue

摘要

The heat recuperator consists of a double skinned enclosure having an outer casing and an inner casing connected to an air inlet plenum under the hearth. Three openings are provided at the top of the enclosure allowing warm air to discharge into the room. A matrix of inclined tubes connects the two side enclosures so that air flow from side to side across the path of the hot flue gases passing to the chimney. The upward inclination of the air tubes ensures a more efficient circulation of the warm air.