Horizontal flue gas condensing economizer
The smoke entering the flue gas condensing economizer travels to two U-shaped cylinders, where nozzles are arranged to inject a stream of dense fine water droplets into the flue gas stream. The injected droplets are at a lower temperature than the flue gas, so they begin to absorb the thermal energy contained in the flue gasses. Since the fuel is first dried in the combustion chamber (furnace, combustion stage I), a large amount of water vapor is removed with the flue gasses, which starts to condense as the smoke temperature in the condenser drops. The formed condensate drains to the condensate collection tank, from which the condensate is circulated through the heat exchanger (s) and fed back to the nozzles.
The flue gasses in the unit can be cooled from 180 ° C to 45˚C ÷ 65˚C depending on the humidity of the fuel (as the humidity of the fuel increases, the efficiency of the condenser increases).