"In idle mode the fire will be a narrow red band of glowing coals, with only a little blue flame off of the coal. The rest of the grate will be ashes.."
I am trying to understand the above and more.
So when a stoker has no demand for heat from the thermostat it simply keeps a small strip of coal burning on the grate...but where is that strip located?...towards the end of the grate towards the ash pan or towards the hopper in the back of the grate?
also...when there is a demand for heat...which direction does the fire spread on the grate from front to back (back being where the hopper is and front being where the door is)
and...how wide an ash section should there be on the grate during idle and full burn and where and does it differ?
Thank you!
Help Me Understand Stoker Fire Please
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Richard S.
- Mayor
- Posts: 15262
- Joined: Fri. Oct. 01, 2004 8:35 pm
- Location: NEPA
- Stoker Coal Boiler: Van Wert VA1200
- Coal Size/Type: Buckwheat/Anthracite
You're strip of burning coal whether it's idling or going full bore is going to be located in the middle or upper middle for the most part. As the coal is pushed onto the grate it pushes the fire down exposing fresh coal to the air holes. The ashes fall off the end. Heres' 2 pictures, not sure who posted them so I can't give credit. I'm not sure if these are from the same stoker
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So in idle the fire strip will be towards the back closer to the hopper with most of the grate being ash...then as demand increases more coal is pushed out onto the grate and the fire spreads forward and back as the coal dumps on the grate? and I assume the ash trail becomes smaller towards the front when demand is highest because most of the grate is burning coal?
That correct?
That correct?
Towards the hopper at the back of the grate.So when a stoker has no demand for heat from the thermostat it simply keeps a small strip of coal burning on the grate...but where is that strip located?...towards the end of the grate towards the ash pan or towards the hopper in the back of the grate?
From back to front.when there is a demand for heat...which direction does the fire spread on the grate from front to back (back being where the hopper is and front being where the door is)
The ash is always full width of the grate.how wide an ash section should there be on the grate during idle and full burn
Yes, You want to adjust the stoker so that at max output you will have about an inch of ash at the end of the grate. If it is pushing red hot coals off of the end you need to cut back on the feed a little.jrn8265 wrote:Cool! Can't wait to get mine working....how much ash during full burn? Last inch or so towards the front?