Which was/is the best underfed stoker?

Which was/is the best underfed stoker?

PostBy: HeatTech On: Fri Jan 17, 2014 5:24 pm

Without making this question overly complicated or controversial, here's a list of four that would work for me.

1). EFM S-15 stoker from the 350 that is no longer in production.

2). The Van Wert VA-400 which is also out of production.

3). The Harman VertiFlow used in the VF3000 etc.

4). The Alaska 140 underfed stoker pot.

Which stoker would "best" burn wood pellets and other biomass along with bituminous and anthracite?

Durability is also a key component of a good design, which design was the most robust and reliable?
Last edited by HeatTech on Fri Jan 17, 2014 9:50 pm, edited 1 time in total.
HeatTech
 

Re: Which was/is the best underfed stoker?

PostBy: McGiever On: Fri Jan 17, 2014 5:38 pm

Alaska 140
McGiever
 
Stoker Coal Boiler: AXEMAN-ANDERSON 130 "1959"
Hot Air Coal Stoker Stove: HARMAN MAGNUM
Hand Fed Coal Stove: RADIANT HOME AIR BLAST
Baseburners & Antiques: OUR GLENWOOD 111 BASEBURNER "1908"
Coal Size/Type: PEA / ANTHRACITE, NUT-STOVE / ANTHRACITE
Other Heating: Ground Source Heat Pump
Stove/Furnace Make: Hydro Heat /Mega Tek

Re: Which was/is the best underfed stoker?

PostBy: HeatTech On: Fri Jan 17, 2014 6:48 pm

Based on what I've seen and read, the Alaska's pot isn't as durable as some others. That's by design, it was never intended to be burnt hard like an EFM. However, it looks like the best candidate for my customer.
HeatTech
 

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Re: Which was/is the best underfed stoker?

PostBy: Pacowy On: Fri Jan 17, 2014 6:56 pm

AFAIK the Alaska and EFM both have comparatively small ID auger tubes that would make it hard to burn bituminous.

Mike
Pacowy
 
Stoker Coal Boiler: H.B. Smith 350 Mills boiler/EFM 85R stoker
Coal Size/Type: Buckwheat/anthracite

Re: Which was/is the best underfed stoker?

PostBy: carlherrnstein On: Fri Jan 17, 2014 7:47 pm

Dont forget about the Will-Burt model 30 but, be ready to pay out the nose. A while back there was a new unused unit for less then $2,000 in the for sale section.

http://www.willburt.com/manufacturing-s ... r-stokers/
carlherrnstein
 
Hot Air Coal Stoker Stove: combustioneer model 77B
Coal Size/Type: pea stoker/Ohio bituminous

Re: Which was/is the best underfed stoker?

PostBy: Pacowy On: Fri Jan 17, 2014 8:07 pm

HeatTech,

Please check your private messages (envelope icon at top of page).

Thanks.

Mike
Pacowy
 
Stoker Coal Boiler: H.B. Smith 350 Mills boiler/EFM 85R stoker
Coal Size/Type: Buckwheat/anthracite

Re: Which was/is the best underfed stoker?

PostBy: whistlenut On: Fri Jan 17, 2014 8:26 pm

Once again, there is/are NO wonderful multifunction stoker that eat rocks and crap out diamonds. If you are a Heat Tech, you should already know that. Don't offer or support something that is NOT a part of the real world. It seems that you are looking for 'Pure Gold' and that is not anywhere to be found. You keep asking, and the BIG Boys are laughing their butts off.
whistlenut
 
Stoker Coal Boiler: AA130's,260's, AHS130&260's,EFM900,GJ&VanWert
Hand Fed Coal Boiler: Franks Boiler,Itasca415,NYer130,Van Wert
Hot Air Coal Stoker Furnace: Yellow Flame
Hot Air Coal Stoker Stove: Alaska-4,Keystoker-2,
Hand Fed Coal Stove: Alaska,Gibraltor,Keystone,Vc Vigilant 2
Hand Fed Coal Furnace: Van Wert, NYer's, Ford,Jensen.
Coal Size/Type: Rice,Buck,Pea,Nut&Stove
Other Heating: Oil HWBB

Re: Which was/is the best underfed stoker?

PostBy: Scottscoaled On: Fri Jan 17, 2014 8:41 pm

Dunno where you get your information but the EFM stoker and the Van Wert stokers are still in production.
Scottscoaled
 
Stoker Coal Boiler: EFM 520x4, 350, 700. Van Wert 400 x 2, 800, 1200.
Coal Size/Type: Lots of buck

Re: Which was/is the best underfed stoker?

PostBy: HeatTech On: Fri Jan 17, 2014 9:30 pm

Scottscoaled,

Arnie doesn't have or make the 400 series stoker. The 600 he does, but not the smaller 400. Again, this is according to Arnie. Should I ask him again?

The stoker for the EFM 350 was only made for a few years, then it was changed to the S-20 like the 520. Most 350's floating around have the S-20 stoker and not the original 90k btu S-15 oem unit.
Last edited by HeatTech on Fri Jan 17, 2014 9:46 pm, edited 1 time in total.
HeatTech
 

Re: Which was/is the best underfed stoker?

PostBy: Wood'nCoal On: Fri Jan 17, 2014 9:42 pm

I'm a little biased.
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Wood'nCoal
 
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert

Re: Which was/is the best underfed stoker?

PostBy: HeatTech On: Fri Jan 17, 2014 10:26 pm

It looks like the stoker pot made by Alaska would be ideal for my customer. I need to talk with Mr G at Alaska next week and see if we can make a deal. I was looking forward to building these here in the shop but sometimes economics make the decisions for you. :(
HeatTech
 

Re: Which was/is the best underfed stoker?

PostBy: whistlenut On: Fri Jan 17, 2014 10:43 pm

I am thinking that you are looking for a very small output if you want the ability to burn pellets as a primary fuel. You must be aware of the output differences with the Alaska on coal or pellets????!!!

The EFM S-20 stoker is quite simply the best size for the majority of applications. If you live in PA you already know about that. Alaska at this time has no provisions for fines removal , so do a little more research if you think that would equate to an S-20 stoker. Close, but no cigar! If you told us just how many BTU's you were trying to maintain it would sure be simpler to help you out.

Do you burn coal or pellets yourself? In the archives are the results of Chris from EFM, burning pellets in an EFM DF520 a couple years back. Find that thread and read up, because it sure gives definitive answers to output, and compatibility. I believe the DF 520 was certified to be a "Green Boiler", albeit with a severe reduction in output, AND a huge appetite for pellets.

I do understand WHAT YOU WANT TO PROVIDE, AND AM POLITELY SUGGESTING, YOU ARE ON THE WRONG PATH. nuff said. Goodevening to you
whistlenut
 
Stoker Coal Boiler: AA130's,260's, AHS130&260's,EFM900,GJ&VanWert
Hand Fed Coal Boiler: Franks Boiler,Itasca415,NYer130,Van Wert
Hot Air Coal Stoker Furnace: Yellow Flame
Hot Air Coal Stoker Stove: Alaska-4,Keystoker-2,
Hand Fed Coal Stove: Alaska,Gibraltor,Keystone,Vc Vigilant 2
Hand Fed Coal Furnace: Van Wert, NYer's, Ford,Jensen.
Coal Size/Type: Rice,Buck,Pea,Nut&Stove
Other Heating: Oil HWBB

Re: Which was/is the best underfed stoker?

PostBy: Wood'nCoal On: Fri Jan 17, 2014 10:57 pm

Which stoker would "best" burn wood pellets and other biomass along with bituminous and anthracite?

Durability is also a key component of a good design, which design was the most robust and reliable?

Last edited by HeatTech on Fri Jan 17, 2014 8:50 pm, edited 1 time in total.


In light of your edit I must bow out of the conversation as I can only comment on burning Anthracite.
Wood'nCoal
 
Stoker Coal Boiler: 1959 EFM 350
Hand Fed Coal Stove: Harman Magnafire Mark I
Coal Size/Type: Rice and Chestnut
Other Heating: Fisher Fireplace Insert

Re: Which was/is the best underfed stoker?

PostBy: Rob R. On: Fri Jan 17, 2014 11:03 pm

HeatTech wrote:
The stoker for the EFM 350 was only made for a few years, then it was changed to the S-20 like the 520. Most 350's floating around have the S-20 stoker and not the original 90k btu S-15 oem unit.


The only difference is the diameter of the burner ring and the length of the arm on the gearbox crank. I have a 1990's S20 blower/ratchet assembly running with a S15 pot right now. You can find a single S15 ring easy enough, and probably have it recast if you really wanted a pile of them.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Coal Size/Type: Rice/buck
Other Heating: Dad's 1953 EFM Highboy

Re: Which was/is the best underfed stoker?

PostBy: Richard S. On: Fri Jan 17, 2014 11:14 pm

HeatTech wrote:Which stoker would "best" burn wood pellets and other biomass along with bituminous and anthracite?


I don;t think any of them are going to burn bit coal reliably, firstly you need consistently sized rice or buck and secondly there is the clinkering issue with bit coal. EFM has a thread on bituminous coal boiler they tested using a prill pot, I don't know if it ever went into production or how well it will burn anthracite.


The soft coal they are burning here is from Wyoming:



Durability is also a key component of a good design, which design was the most robust and reliable?


I let you know when it dies. ;) The Van Wert in my house is about 30 years old and the one in my Grandmothers is about 40. You're going to get the same thing out of EFM, AA etc. The key is to burn them 24/7/365.
Richard S.
 
Stoker Coal Boiler: Van Wert VA1200
Coal Size/Type: Buckwheat/Anthracite

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