Amount of bit used

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Coalblooded
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Post by Coalblooded » Sun. Nov. 20, 2022 6:47 pm

I have been burning bit for this heating season and started wondering. I use a 10qt bucket for reloading and the furnace gets to 6-700 degrees for a few minutes then drops to 4-450.

I hear of people putting “bucketS” of coal in while reloading and iv been too afraid to try more since my furnace gets so warm.

While sitting here reading i thought, does bit coal burn off at the same rate (givin the same air flow and temp) in 10qts as it would for “bucketS”?

I wanted to ask before i just huck in 5 gallons worth of coal and have to shut it down out of overfire.
The coal i have now is lump 2-4 inches that i separated myself so probably 12 lbs in 10qts. I have added a pic of the firebox and coal

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larryfoster
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Post by larryfoster » Mon. Nov. 21, 2022 12:13 am

I may be misunderstanding your question.
Are you asking if your fire will get too hot if you put a lot of coal in?

Tonight, for example, I put 5 or 6 shovels in to fill my chamber up to the bricks.
Guessing my shovel holds 7-9 lbs. of coal.

If that's not what you were asking, I'll respond like Emily Latella from Saturday Night Live.
"Never mind"

 
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carlherrnstein
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Post by carlherrnstein » Mon. Nov. 21, 2022 12:00 pm

You have to "bank" the coal for extended burns.


 
Coalblooded
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Post by Coalblooded » Mon. Nov. 21, 2022 1:16 pm

I do bank coal but when i start the day its little by little to get a deep bed of coals going.

Yeah that was my question, if you put in say 20lbs vs 50lbs would the initial volatile burn be the same?

My problem is the morning routine of filling it and heading off to work. I would like it to be enough to last 5 or so hours. Right now i can inly add some and bank a little just enough to get the house up to temp. it starts to cool down drastically before the ol lady gets up n going. She does a lot of late night work and being up earlier for her would be last resort

 
fig
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Post by fig » Thu. Dec. 01, 2022 10:13 am

When I was burning bit in my warm morning it was very smoky and it that’s where the danger was for me. It would smother the flame if I added too much then smoke filled the stove, stovepipe and chimney. When it re ignites all that smoke would ignite as well. That gets the adrenaline going. Bitumenous is tricky like that. At least the stuff I had was. I wasn’t getting chunks as large as you have. Mine were like 1” to 1.5” with tons of fines. After cleaning I would literally have half as much coal as I started with.

I got better at it and towards the end I was just dumping 7 gallon buckets in at a time with the odd flame out. I got better at flame outs too. Sometimes I would ignite the smoke before it built up with some lit newspaper. I had to catch it pretty early to do that though or it would shoot flames 6 feet out the door. Whatever you do if you have a flame out, don’t keep your head or body parts around the door when opening it and have a firm hold on that door. If it ignites it will blow the door out of your hands.

Like I said maybe your bit isn’t as smoky as mine and you may not have these situations. Just experiment and be prepared. Keep a few buckets of ash on hand in case you have a runaway. You can dump it in the firebox and stop it. I had a few of those too. Once bit starts to run away it’s slow to stop by just closing all the airways. Good to be ready for it. The first time it happened I wasn’t. Top of the stove turned cherry red and the stove pipe was translucent. I could see the flames going through it. My stovepipe was about 15” from the floor joists and they were too hot to touch. This lasted for 10 or 15 minutes before total shutdown finally brought it under control. I didn’t have a barometric damper at the time either. I did afterwards. I’m sure that would have help immensely. Not trying to scare you just sharing my experience. The bit I have is pretty volatile and being small and dense doesn’t help. Bit from different regions behave much differently.

 
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oros35
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Post by oros35 » Thu. Dec. 01, 2022 2:06 pm

Hard to tell from your picture but I'm not sure your bank is high enough. I've got a big firebox so it would be easier for me, but when I bank my fire, one side has coals and the other side I can see the grates (or almost see). I'm essentially feeding front to back not top to bottom. I load once a day or twice if if highs are in the 20's.

Not sure if that would work at all for you but just something to try.


 
fig
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Post by fig » Thu. Dec. 01, 2022 4:53 pm

I would try to bank it so the smoke has to travel over the top of the flames to exit the flue. this helps burn off the smoke/volatiles. Some stoves have secondary burn systems that change the flow path of the exhaust.

 
Coalblooded
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Post by Coalblooded » Thu. Dec. 01, 2022 11:26 pm

I tried banking , back to front, and having the hot coals in the front, which would be over fire for the smoke. all of the coal just ignites in about 20 min. Maybe i need to rake the coals completely from the back and load it then? I think my problem is everything igniting that i put in.

 
fig
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Posts: 1045
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Hand Fed Coal Boiler: Harman SF360
Hand Fed Coal Stove: T.O.M (Warm Morning converted to baseburner by Steve) Round Oak 1917 Door model O-3, Warm Morning 400, Warm Morning 524, Warm Morning 414,Florence No.77, Warm Morning 523-b
Hand Fed Coal Furnace: Clayton 7.1/DS Machine basement stove/ Harman SF1500
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Coal Size/Type: Bituminous/anthracite
Other Heating: Harman Accentra, enviro omega, Vermont Ironworks Elm stove, Quadrafire Mt Vernon, Logwood stove, Sotz barrel stove,

Post by fig » Fri. Dec. 02, 2022 2:20 pm

If you don’t have any trouble with it filling with smoke and back puffing on you, then try it. Just make sure you have good air control so it doesn’t runaway on you.
I would definitely experiment when I could be home to monitor it.
Do you have a barometric damper? I highly recommend it. I even use a manual pipe damper, two in fact. I have enormous daft in my chimney. If you do this make sur the manual pipe damper is between the stove and the barometric damper.

What kind of stove is it?

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