PECULIARITYS OF THE USE OF FLUE GAS RECIRCULATION FOR BOILERS OF SMALL AND MEDIUM CAPACITY

The problems of using the method of flue gas recirculation into the combustion air for small-capacity boilers that are not equipped with air-heaters are described. An analysis of the thermal-humidity state of the gas-air mixture in different modes of a water-heating boiler with a heat output of 2 MW was carried out. The reasons for limiting the application of this method are determined and ways to solve problems are indicated.