Arrangement for heat recovery from the smoke gas of a central heating system

摘要

The arrangement for heat recovery from the smoke gas of a central heating system is equipped with a smoke-gas heat exchanger (1) connected between the boiler (2) and the chimney (3). Leading through this smoke-gas heat exchanger (1) is a liquid line (9) which is bridged by a bridging line (10) and through which the return-run liquid of the central heating system flows. Built in in the course of the liquid line (9) is a pump device (11) which determines the flow rate of the liquid. Connected downstream of the smoke-gas heat exchanger (1) is a smoke-gas flap which is open during the burning hours of the fire in the boiler (2) and closed during firing pauses. The arrangement allows optimum heat recovery from the smoke gas of a central heating system with a considerable heating-material saving and can be added subsequently to practically all existing central heating systems. <IMAGE>