Heat recuperator fitted in domestic flue duct - has double walled finned pipe, supplies hot water for radiators etc.

摘要

The heat recuperator is intended for installation in the flue duct of a stove, boiler, open fire etc. and provides hot water e.g. for connecting to radiators or as hot water supply. The unit shown comprises a double-walled pipe, of which the inner wall forms the passage for the flue gas and may be provided with radially inward fins. The annular space between the walls is filled with water and is at its upper end connected to the radiator feed line, the lower end being connected to the return line. External hooks serve for installation in the flue duct. The walls are spaced by rings. Alternative recuperator units are described. FL.