EFM Stoker/Forge/Boiler

Stoker Coal Boilers automatically feed the coal and have controls and pumps just like any conventions boiler. They are intended to be used as a primary heat and often have domestic hot water coils as an added bonus. They can be set up independently or in dual sytem with your existing oil/gas boiler. They can accommodate both hot water base board or steam plumbing.
User avatar
smithy
Member
Posts: 204
Joined: Sat. Oct. 09, 2010 8:31 am
Hand Fed Coal Boiler: Columbia
Baseburners & Antiques: Chicago Stove Works home perfect 214
Coal Size/Type: Nut
Stove/Furnace Model: Home perfect 214
Location: nw Indiana

Post Sun. Jan. 15, 2012 7:02 pm

Been kicking this around for awhile
the concept is to be able to get a shop boiler set up to do double duty. If I could use the firepot to heat my irons to a workable heat "yellow" and heat the water in the boiler to heat my shop "radiant floor heat"this would be Great! .
The boiler would need to be situated about 14" above its normal height and a transition piece fabricated with an access door or doors to allow long stock to pass through .

Thoughts or comments is what I am looking for as well as solutions to known problems from experienced individuals
Attachments
2012-01-14_15-26-26_179.jpg
"The Anvil" mother of all tools

Visit Alternate Heating Sytems

User avatar
stoker-man
Verified Business Rep.
Posts: 2063
Joined: Mon. Nov. 19, 2007 9:33 pm
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove
Location: Lehigh Valley, PA

Post Mon. Jan. 16, 2012 4:25 pm

Here are some thoughts, all non-professional: You'll have to provide a rear compartment inner wall and seal it, just like the regular boiler on base setup, to direct the exhaust down the back of the boiler and into the rear of the base, to be exhausted. Alternately, you might be able to seal the exhaust port on the base and move it into the middle, added section. You're going to have to be aware of your draft situation. I don't know how far down you can pull the smoke into the lower base and still have enough draft to get it out of the unit. Maybe it'll be a piece of cake.

The walls will have to be strong enough to carry the 800 lb. boiler, plus added plumbing. Probably no problem, since you are already familiar with working with steel.

The fire won't be as close to the water jacket, so there may be some loss of heat transfer. Not being an engineer, I don't know that answer, but I believe it won't be a serious issue. You might require an extra tooth of feed than a standard setup. Your water has to be tempered anyway for floor radiant heat.

I have often used a coal boiler fire to heat steel. It works nice.

The only potential problem might be the draft issue, but I would certainly try your invention if it were in my shop.
‹(•¿•)›

User avatar
smithy
Member
Posts: 204
Joined: Sat. Oct. 09, 2010 8:31 am
Hand Fed Coal Boiler: Columbia
Baseburners & Antiques: Chicago Stove Works home perfect 214
Coal Size/Type: Nut
Stove/Furnace Model: Home perfect 214
Location: nw Indiana

Post Mon. Jan. 16, 2012 5:36 pm

Thanks for the input stokerman, on the draft issue maby a draft inducer to run when the doors are open .
Dose the combustion blower force hot air through the boiler or is it a push pull effect? Also what diameter are the firepots ? Or how much of a 12" bar can you get a heat on?

Thanks for weighing in got worried there for a minute
"The Anvil" mother of all tools

User avatar
stoker-man
Verified Business Rep.
Posts: 2063
Joined: Mon. Nov. 19, 2007 9:33 pm
Hand Fed Coal Boiler: 1981 efm wcb-24 in use 365 days a year
Coal Size/Type: Anthracite/Chestnut
Other Heating: Hearthstone wood stove
Location: Lehigh Valley, PA

Post Mon. Jan. 16, 2012 6:14 pm

If you're stoking the fire, you probably have 8-10" of red coal. But you won't always be stoking unless you let your building doors wide open. The stoker air supply is adjustable so that you always maintain a neg .04 draft up the flue while firing with the door shut. Opening the door will cause some of that pressure to vent into the shop. You'll have a learning curve as to when to put iron in the fire. Even closing the door almost shut will usually work.

Draft inducers don't last long with breech stack temps of up to 600 degrees, but there might be something out there in the way of a fan.

The stoker does produce a positive pressure and the heat rising up the stack produces a negative pressure. It's balanced with a draft regulator and in your case, some learning curve.
‹(•¿•)›

User avatar
coaledsweat
Site Moderator
Posts: 9820
Joined: Fri. Oct. 27, 2006 2:05 pm
Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea
Location: Guilford, Connecticut

Post Tue. Jan. 17, 2012 9:51 am

smithy wrote:If I could use the firepot to heat my irons to a workable heat "yellow" and heat the water in the boiler to heat my shop "radiant floor heat"this would be Great!
Yellow? This is a 1" X 1/2" bar of cold rolled that was in my Axeman for about 10 minutes at idle. It would probably just disappear if it was under load. :) It only appears distorted because it is so hot it has a corona, the steel never lost it's finished shape.
Attachments
IMG_5455.JPG
Nothing is impossible for people who don't have to do it themselves.

User avatar
Yanche
Member
Posts: 3032
Joined: Fri. Dec. 23, 2005 12:45 pm
Stoker Coal Boiler: Alternate Heating Systems S-130
Coal Size/Type: Anthracite Pea
Location: Sykesville, Maryland

Post Tue. Jan. 17, 2012 10:04 am

Is this the new replacement for the incandescent light bulb? :-)
Yanche
Alternate Heating Systems S-130
Stoker Boiler burning Anthracite Pea Coal

User avatar
coaledsweat
Site Moderator
Posts: 9820
Joined: Fri. Oct. 27, 2006 2:05 pm
Stoker Coal Boiler: Axeman Anderson 260M
Coal Size/Type: Pea
Location: Guilford, Connecticut

Post Tue. Jan. 17, 2012 11:15 am

LOL, It was a lot brighter than it looks in the pic! :D
Nothing is impossible for people who don't have to do it themselves.

User avatar
CoalHeat
Site Moderator
Posts: 8327
Joined: Sat. Feb. 10, 2007 9:48 pm
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Baseburners & Antiques: Sears Signal Oak 15 & Andes Kitchen Range
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert
Location: Stillwater, New Jersey

Post Tue. Jan. 17, 2012 5:05 pm

An aluminum can placed in a hand fed will be just a shell 12 hours later and will promptly disappear when the fire is shaken.
Heating a circa 1832 farmhouse with a Harman Magnafire Mark I & a 1959 EFM 350 (heating DHW).
100% Oil Free!
"It's what we learn after we think we know it all that counts."

Visit Alternate Heating Sytems

User avatar
Rob R.
Site Moderator
Posts: 11341
Joined: Fri. Dec. 28, 2007 4:26 pm
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy
Location: Chazy, NY

Post Tue. Jan. 17, 2012 6:13 pm

I like your idea of using a stoker for a forge. Have you considered just getting a stoker and setting it up in a base that would meet your needs? It could be a Gentleman Janitor stoker, EFM, Van Wert, etc...it doesn't have to be fancy. Roll it out in front of the shop when you need it and let it roar.

User avatar
smithy
Member
Posts: 204
Joined: Sat. Oct. 09, 2010 8:31 am
Hand Fed Coal Boiler: Columbia
Baseburners & Antiques: Chicago Stove Works home perfect 214
Coal Size/Type: Nut
Stove/Furnace Model: Home perfect 214
Location: nw Indiana

Post Tue. Jan. 17, 2012 10:46 pm

Yes that would be an option but I have two portable propPAIN forges already
"The Anvil" mother of all tools

Pacowy
Member
Posts: 2731
Joined: Tue. Sep. 04, 2007 10:14 pm
Stoker Coal Boiler: H.B. Smith 350 Mills boiler/EFM 85R stoker
Coal Size/Type: Buckwheat/anthracite
Location: Dalton, MA

Post Tue. Jan. 17, 2012 11:33 pm

I like stoker-man's suggestion of putting the exhaust port in the section you add, but instead of sealing up the old one in the base you might want to set it up for clean-out access.

Mike

User avatar
smithy
Member
Posts: 204
Joined: Sat. Oct. 09, 2010 8:31 am
Hand Fed Coal Boiler: Columbia
Baseburners & Antiques: Chicago Stove Works home perfect 214
Coal Size/Type: Nut
Stove/Furnace Model: Home perfect 214
Location: nw Indiana

Post Wed. Jan. 18, 2012 12:22 am

Yes I need to familiar my self with the concept as your suggested it would facilitate cleaning. I am confuse preas exprain.
"The Anvil" mother of all tools

Pacowy
Member
Posts: 2731
Joined: Tue. Sep. 04, 2007 10:14 pm
Stoker Coal Boiler: H.B. Smith 350 Mills boiler/EFM 85R stoker
Coal Size/Type: Buckwheat/anthracite
Location: Dalton, MA

Post Wed. Jan. 18, 2012 9:45 am

Most EFM bases I've seen don't provide very convenient access for cleaning the "back side" of the boiler (i.e., where the combustion gases are descending to the smoke pipe connection). The "standard procedure" I'm familiar with is to remove the smoke pipe and reach in through the opening (8" diameter on a 520) with a scoop/brush/vac/etc. to clear accumulated flyash. (Some people may be able to remove an entire panel that holds the smoke pipe connection, but I think they're in the minority.)

My thought for your project was that the smoke pipe opening on a standard base provides you with an opportunity to repurpose that opening for easier cleanout access without having to remove the smoke pipe, as long as you establish a new smoke pipe connection on the back of the "insert" you are planning between the boiler head and the original base. The original smoke pipe connection could get a removable cap, or if there is a panel you could make sure it's easily removable, or go really wild and substitute a panel-mounted ash door (as used on some of EFM's bigger boilers). Easier access would not only make it easier to perform annual or semi-annual cleanings, but also would let you go in more frequently to brush off the heat exchange surfaces, potentially enhancing efficiency.

Mike

User avatar
smithy
Member
Posts: 204
Joined: Sat. Oct. 09, 2010 8:31 am
Hand Fed Coal Boiler: Columbia
Baseburners & Antiques: Chicago Stove Works home perfect 214
Coal Size/Type: Nut
Stove/Furnace Model: Home perfect 214
Location: nw Indiana

Post Thu. Jan. 19, 2012 9:49 am

Yes that sounds like an excellent idea the additional access will come in handy to facilitate the workings of a by pass damper to use in the summer or extended forging sessions when I am running the stoker full out.
"The Anvil" mother of all tools

User avatar
smithy
Member
Posts: 204
Joined: Sat. Oct. 09, 2010 8:31 am
Hand Fed Coal Boiler: Columbia
Baseburners & Antiques: Chicago Stove Works home perfect 214
Coal Size/Type: Nut
Stove/Furnace Model: Home perfect 214
Location: nw Indiana

Post Tue. Jan. 24, 2012 8:49 am

Hi folks! If you have any parts available for the stoker forge project send a pm and let me know

Wanted stoker assembly efm s20 for stoker forge boiler project price according to condition can do some restoration work preferred or rebuilt at competitive pricing just as well also will need boiler must hold pressure test need freight to zip 46349

Thanks
"The Anvil" mother of all tools

Visit Alternate Heating Sytems

Post Reply

Return to “Stoker Coal Boilers Using Anthracite (Hydronic and Steam)”