November 3, 2021
A combined condensing boiler heating system in which a burner is mounted at the inlet of the furnace and a high temperature flame is formed in the furnace by a flow rate injection of gas/fuel oil and hot air from the burner; The flue gas passes through the tube bundle heat exchanger of the boiler to transfer heat to water, and the flue gas after heat release passes through the high temperature air preheater to further heat the air flowing through the high temperature air preheater. The flue gas is heated and gasified by the organic working substance of the heat pump device, and the heat pump device absorbs the waste heat of the flue gas, heating of heating water is carried out through the circulation of organic working substance. Through the combined heating system of condensing boiler and heat pump of the utility model, the low-temperature organic working substance of the heat pump is used to recover the waste heat of the flue gas of the gas boiler, to improve the quality of the waste heat, to generate high-temperature working substance, and to further heat the heating water, to achieve energy saving, consumption reduction, emission reduction purposes.