HEATING DEVICE, AND WHITE SMOKING INHIBITION METHOD OF COMBUSTION EXHAUST GAS

摘要

PROBLEM TO BE SOLVED: To establish a technique for inhibiting white smoking that is generated when discharging a combustion exhaust gas to the fresh air while highly maintaining the amount of recovery of the heat of the combustion gas in a heating device 100 that is provided with a heat exchanger 6 for heating that exchanges heat between condensate being discharged from a radiator X and a combustion gas that is discharged from a burner part 4, a heat exchanger 26 for supplying hot water that exchanges heat between supplied water being equal to or less than the dew point of the combustion gas and the combustion gas being discharged from a burner 26 and also recovers the condensation latent heat of steam in the combustion gas by supplying water, and an exhaust gas channel 7 for discharging the combustion exhaust gas after exchanging heat to the fresh air. SOLUTION: An exhaust gas channel 7 is provided with a heat exchanger 10 for heating an exhaust gas that heats a combustion exhaust gas being circulated through the exhaust gas channel 7 using condensate before being supplied to a heat exchanger 6 for heating.