Heating water and hot water preheating system boiler using waste heat recovery room

摘要

The present invention attaches the "waste heat recovery room" 13 which recovers the waste heat exchanged from the heat exchanger of a conventional boiler, either integrally or separately with the boiler at the top or the periphery of the boiler to preheat the heating return or the number of supply. The present invention relates to a heating water and hot water preheating system boiler using a "waste heat recovery room" for increasing thermal efficiency, wherein the boiler having a conventional heating heat exchanger (3) and a combustion chamber (4) comprises a heating heat exchanger (3) and a combustion chamber (4). The waste heat recovery room 13 is installed in the upper combustion gas outlet 14 of), and the waste heat recovery heat exchanger 1 connected to the heating return pipe is installed horizontally, vertically or inclinedly in the waste heat recovery room 13 to recover the heating. The waste heat of the exhaust gas is recovered and preheated and supplied to the heating heat exchanger (3), and a hot water tank (2) connected to the direct water pipe is installed in or in contact with the waste heat recovery chamber (13). After the heat, heat-exchange to preheat the water stream in the hot water tank, it characterized by supplying a water stream to the pre-heating the hot water heat exchanger (8).;The condensate generated in the waste heat recovery room 13 is collected in the condensate collection unit 11 without entering the boiler, and is discharged by neutralizing with a magnesium rod or a neutralizing agent that can neutralize the acidified condensate in the condensate collection unit 11. Withdrawal by a hose, characterized in that to prevent the back flow of the combustion gas by the drain trap.