SOLARFOCUS maximus L 150, Руководство по установке

Страница: 17 / 52

3 Technical requirements
Installation manual maximus L 17
4.7 Functional components, combustion principle
Burner
Abb. 2-12: Section through the burner
Functional components
1 Rotary valve 5 Ash auger burner 9 Rotary drive for secondary air
2 Feeder unit 6 Ash container 10 Secondary air outlet
3 Push grate 7 Rotary drive for primary air 11 Flue gas recirculation line
4 Ash scraper 8 Primary air outlet
Fuel path
–
The fuel falls through the rotary valve 1 into the channel of the feeder unit 2 . The auger delivers the fuel to the
feed grate 3 .
–
During combustion, the fuel is transported on the feed grate and the resulting ash falls down through the grate.
–
The ash pusher 4 push the ashes to the ash auger 5 , and the auger transports the ash into the ash container 6 .
Airflow
–
Primary air is drawn in at the opening 7 , forwarded in a space on the left and right side of the boiler. At the
holes 8 the primary air escapes from under the stainless steel combustion grate and makes it way through the
feed grate into the combustion chamber.
–
Secondary air is drawn in at the opening 9 and passes through openings 10 in the fire brick (left, right, rear)
above the stainless steel combustion grate into the combustion chamber.
–
Flue gas recirculation: Flue gas is introduced via the path of the flue gas recirculation line 11 here and added to
the primary air. This leads to the cooling of the feed grate and the combustion chamber and thus to lower
stress on the components.