Coal Bin Design for an EFM

Re: coal bin design for an EFM

PostBy: coalkirk On: Mon Feb 13, 2017 10:55 am

OK so if my geometry hasn't failed me this bin will hold 5.5 tons of coal which is just what I need for a season.
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coalkirk
 
Stoker Coal Boiler: 1981 EFM DF520
Coal Size/Type: anthracite/rice coal


Re: coal bin design for an EFM

PostBy: Richard S. On: Mon Feb 13, 2017 11:04 am

windyhill4.2 wrote:
Seems like the sloped floor is a waste of time,money & space...


If you have a deep enough basement and build a big bin it would be worth it, smaller bin it's just taking up space.
Richard S.
 
Stoker Coal Boiler: Van Wert VA1200
Coal Size/Type: Buckwheat/Anthracite

Re: coal bin design for an EFM

PostBy: Richard S. On: Mon Feb 13, 2017 11:13 am

coalkirk wrote:OK so if my geometry hasn't failed me this bin will hold 5.5 tons of coal which is just what I need for a season.


Terry, wherever the auger is you pretty much draw a 45 degree angle from it all directions like a cone.

The other problem is without the drum that works against you....

I'd suggest trying out the drum, you can always add your angled walls later if it's not satisfactory.
Richard S.
 
Stoker Coal Boiler: Van Wert VA1200
Coal Size/Type: Buckwheat/Anthracite

Re: coal bin design for an EFM

PostBy: McGiever On: Mon Feb 13, 2017 11:52 am

You could add plywood pieces on top of coal after auger has drawn down coal to angle of repose, by adding then, the plywood would not need any support joists under it and you'd still have a couple tons of reserve coal stashed away for an emergency. ;)
McGiever
 
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Coal Size/Type: PEA / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek

Re: coal bin design for an EFM

PostBy: waldo lemieux On: Mon Feb 13, 2017 3:09 pm

:? What would be the purpose of the plywood at all? If your going to use the space under the plywood for more coal wouldnt you want to leave the plywood out so you don't have to remove it to use your coal?
waldo lemieux
 
Stove/Furnace Make: efm
Stove/Furnace Model: s-20

Re: coal bin design for an EFM

PostBy: McGiever On: Mon Feb 13, 2017 6:50 pm

waldo lemieux wrote::? What would be the purpose of the plywood at all? If your going to use the space under the plywood for more coal wouldnt you want to leave the plywood out so you don't have to remove it to use your coal?


His desire is a hands off no raking solution.

With the price of only some plywood he gets to start every season w/ a clean bin and keeps from accumulating many, many years worth of siffted fines into the lower untouched reserves. :)

Yes, have your cake and eat it too. ;)
McGiever
 
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Coal Size/Type: PEA / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek

Re: coal bin design for an EFM

PostBy: mooseman100 On: Sat Apr 22, 2017 10:16 am

My bin is appx 8' long, 5' wide and 4 1/2' deep. I sloped the floor on three sides to force coal to the opening of the dog house where the end of the worm sets. I put a guillotine door in the main coal bin directly over end of worm so I can separate coal bin from dog house, in case I need to take worm out and not have to empty bin.
I put linolium flooring on the plywood floor to help with slide, nit sure that made a difference or not, but was cheap.
My wood floors are not 45 degrees in all sides, so I do not get perfect slide to worm. The bin holds 4-4.5 tons, based on grain bags I use to fill it. When I get down to 2 tons I have to rake the coal down towards auger every few days, but is slides down hil easy enough.
I also wanted to have as little messing arou d with it as possible. I fill bin 2x per year
Have been considering a metal grain bin to feed into coal bin. Could hold lot of coal, just need a pto driven conveyor or auger to get coal in
mooseman100
 
Stoker Coal Boiler: EFM 520
Stove/Furnace Model: EFM 520