Heat recovery for oil or gas heating - uses evaporator of heat pump to withdraw heat from exhaust fumes

摘要

The process reclaims heat from the exhaust gas of an oil or gas heating system using a heating circuit connected to the burner. The heat is retained from the exhaust gases in the right angle flue using the evaporator of a heat pump. The heat is supplied via the pump condenser into the heat circuit. The burner flue (6) has two branches (9, 10), connected via the evaporator (12) of the heat pump (13). The condenser (15) is positioned in the heating circuit (2). The flue has an adjustable flap (8) between the branches, to control the gas draught through the evaporator.