Industrial combustion boilers from Czech manufacturer Zdeněk Fiedler with fully hydraulic fuel feed achieve very low NOx emissions thanks to active flue gas recirculation (re-injection into the second boiler pass).
Flue gas cleaning is done via a highly efficient electrostatic precipitator, known for low operating costs (approx. 1 kW of electricity per 1 MW of thermal output).
| TYPE | OUTPUT | FUEL CONSUMPTION | POWER CONSUMPTION | WEIGHT | EFFICIENCY |
|---|---|---|---|---|---|
| SZDO 500 | 500 kW | 180 kg/h | 16,5 kW | 21 000 kg | 88 % |
| SZDO 1500 | 1,5 MW | 672 kg/h | 34 kW | 32 000 kg | 88 % |
| SZDO 2000 | 2 MW | 896 kg/h | 45 kW | 35 000 kg | 88 % |
| SZDO 3500 | 3,5 MW | 1 568 kg/h | 75 kW | 35 000 kg | 88 % |