燃油燃气锅炉排放的烟气多为低品味余热,传统余热回收装置体积大,空间布置困难,且成本高,经济性差。为此,本文采用板翅式换热器作为燃油锅炉余热回收装置,对其进行了余热回收实验和经济性评价。实验表明其节能环保功效优于传统的余热回收装置,且成本低、投资回收期短、使用寿命长,具有良好的推广应用价值。 Flue gas from oil-gas fired boilers is mostly low-grade waste heat, the traditional waste heat recovery unit is bulky, space layout is difficult, and the cost is high and the economy is poor. To this end, this paper uses plate-fin heat exchanger as oil-fired boiler waste heat recovery unit, its waste heat recovery experiments and economic evaluation. Experiments show that its energy saving and environmental protection is better than the traditional waste heat recovery unit, and low cost, short payback period, long service life, and has good application value.