efm Bituminous boiler testing is next week

Re: efm Bituminous boiler testing is next week

PostBy: Klinker Mine On: Thu May 15, 2008 8:01 am

Is it an underfeed firepot, with a refractory ledge around the perimeter of the firepot where the clinkers collect for your manual removal??

Exactly. I will get some pictures when I get things cleared out back there. As spring is finally here (although is has snowed twice this week) I am in the middle of moving everything in the shop :roll:
No ashpan, as it all fuses together. You learn stove maintenance real quick. Before I had my own business, I was a pipe fitter and worked a lot in coal fired power plants. Got to watch thousands of rounds from the Klinker gun shooting off the sidewalls and roof. Seen one just a little smaller than a volkswagen bug. It was wound up in the steam pipes on the roof. We had already put up 5 layers of scaffold. it wadded them like wet paper. :D I still have a bunch of the rounds somewhere. I will snap some pics.
Gary
Klinker Mine
 
Stove/Furnace Make: Lenox

Re: efm Bituminous boiler testing is next week

PostBy: coaledsweat On: Thu May 15, 2008 5:26 pm

Klinker Mine wrote:Got to watch thousands of rounds from the Klinker gun shooting off the sidewalls and roof. Seen one just a little smaller than a volkswagen bug. It was wound up in the steam pipes on the roof. We had already put up 5 layers of scaffold. it wadded them like wet paper. :D I still have a bunch of the rounds somewhere. I will snap some pics.


Gary, we really need to see the video on this.
coaledsweat
 
Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea

Re: efm Bituminous boiler testing is next week

PostBy: stoker-man On: Mon May 19, 2008 7:41 am

Update: The coal has been delivered from Wyoming; the experimental stoker has been installed into a 520; and we are awaiting a larger coal tube and worm. The reason being that stoker coal in Wyoming is not one size, but three sizes mixed together.
stoker-man
 
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove


Re: efm Bituminous boiler testing is next week

PostBy: Richard S. On: Mon May 19, 2008 8:06 am

The plot thickens....
Richard S.
 
Stoker Coal Boiler: Van Wert VA1200
Coal Size/Type: Buckwheat/Anthracite

Re: efm Bituminous boiler testing is next week

PostBy: stoker-man On: Mon May 19, 2008 11:11 am

....and moves along as quickly as the "Lost" series.
stoker-man
 
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove

Re: efm Bituminous boiler testing is next week

PostBy: charlie On: Wed May 21, 2008 9:26 pm

I can't believe my good fortune... searching the web to replace that old Prill boiler and stumbling across this forum! Very exciting. I've been planning on replacing my boiler for awhile, though I must admit I get more ambitious just after I have to work on it. Seems to always die during a snow storm.

I burn bit, live in Wyoming, have clinkers, can't wait for the efm test! Also, am a miner. Looking forward to more posts!
charlie
 
Stove/Furnace Make: Prill and Tulikivi
Stove/Furnace Model: 200 BF and TTU 2700

Re: efm Bituminous boiler testing is next week

PostBy: Sting On: Wed May 21, 2008 9:39 pm

HI Charlie

Would love to see pictures of what you do!

Kind Regards
Sting
Sting
 
Other Heating: OBSO Lennox Pulse "Air Scorcher" burning NG

Re: efm Bituminous boiler testing is next week

PostBy: stoker-man On: Thu May 29, 2008 2:25 pm

Update:

Testing began this week. The specially sized coal pipe and auger turned out to be too large. There was too much coal being added to the fire. It will be next week until a smaller pipe and auger can be made. The firing test went very well otherwise. The final unit will be a bin fed unit, but possibly there will also be a hopper fed unit also available.
stoker-man
 
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove

Re: efm Bituminous boiler testing is next week

PostBy: Sting On: Thu May 29, 2008 4:22 pm

stoker-man wrote:Update:

Testing began this week. The specially sized coal pipe and auger turned out to be too large. There was too much coal being added to the fire. It will be next week until a smaller pipe and auger can be made. The firing test went very well otherwise. The final unit will be a bin fed unit, but possibly there will also be a hopper fed unit also available.


Too Large????

hummm - you may have noted my iron fireman in the for sale area -- larger than life, it used to fire at least 750k in -- but I had a dream I could SIGNIFICANTLY reduce the screw speed and fire at about 20%

But your result tells me no???? :cry:
Sting
 
Other Heating: OBSO Lennox Pulse "Air Scorcher" burning NG

Re: efm Bituminous boiler testing is next week

PostBy: Richard S. On: Thu May 29, 2008 4:36 pm

I believe the EFM's are the same as my Van Wert, there is only one motor that runs both the auger and the cumbustion air. The auger size would significantly impact the amount of coal to air ratio and the length of burn. e.g if there is demand for heat and the auger is too big it would be pushing a lot of coal and probably eventually push the fire out of the pot entirely.
Richard S.
 
Stoker Coal Boiler: Van Wert VA1200
Coal Size/Type: Buckwheat/Anthracite

Re: efm Bituminous boiler testing is next week

PostBy: stoker-man On: Thu May 29, 2008 7:17 pm

I guess the worm was slowed as much as it could be, but the volume was just too much. The burn was very good up till that point.
stoker-man
 
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove

Re: efm Bituminous boiler testing is next week

PostBy: Sting On: Thu May 29, 2008 10:43 pm

ok --- maybe this is another oversimplification of a complicated problem ---- but not all motors spin at 1750 rpm

So why not use one that turns slower - and belt for increased speed on the combustion fan :?:
Sting
 
Other Heating: OBSO Lennox Pulse "Air Scorcher" burning NG

Re: efm Bituminous boiler testing is next week

PostBy: cArNaGe On: Thu May 29, 2008 10:51 pm

Sting wrote:ok --- maybe this is another oversimplification of a complicated problem ---- but not all motors spin at 1750 rpm

So why not use one that turns slower - and belt for increased speed on the combustion fan :?:


There is no belt on an EFM. The motor shaft goes through the fan and bolts to the gearbox.
cArNaGe
 

Re: efm Bituminous boiler testing is next week

PostBy: Scottscoaled On: Thu May 29, 2008 10:56 pm

Can't use a Dimmer switch to find out if it will work? The fan motor only uses about 300 watts. It isn't good for long term but it will slow the feed down enough to find out if your design works. :) Scott
Scottscoaled
 
Stoker Coal Boiler: EFM 520x3, 700 Van Wert 800
Hot Air Coal Stoker Furnace: EFM 150, Keystoker 150
Coal Size/Type: Lots of buck

Re: efm Bituminous boiler testing is next week

PostBy: Richard S. On: Fri May 30, 2008 4:40 am

I don't know about the EFM's but you could do that with mine, when stoker man first posted the pictures I was quite suprised how close they are. Mine has a right angle off the back of the stoker. Little bit more complicated.

Here's brief explanation because I know this picture is terrible, not a lot of light and its from my video cam which doesn't take very good pictures. Anyhow... The motor belt goes to a pulley on the transmission which is not very visible. The transmission directly drives the combustion fan to the left. It also drives the auger which are the front two chainwheels, you'd ahave to change one of these to lower or speed it up. It also drives the "thingy" sticking up that rotates around the fire pot, thats the chain in the background.

Other than the right angle they are almost identical to the EFM's.
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Richard S.
 
Stoker Coal Boiler: Van Wert VA1200
Coal Size/Type: Buckwheat/Anthracite