Stoker Coal Boiler that would best meet my needs

Re: Stoker Coal Boiler that would best meet my needs

PostBy: Northern Maine On: Mon Nov 12, 2012 9:05 am

Rob R. wrote:Can you explain the system that distributes the heated water to each house?

If it is pex tubing, what size?
How long is it?
Heat exchangers?
Circulator size?

You can have the biggest boiler in the state of Maine, but your distribution system can only move so many btu's.


Lets start with drawing a triangle and put a home on each corner. At the top of the triangle is my home...60 ft from the out door boiler. On each of the other corners is a home which, is 150 ft from the boiler. 1 inch pex (insulated) running to each home respectively (both out and in lines). My home and the home heated to 45 degrees each have a #9 taco circulator pump (bothe these homes are open loop systems). The other home has a #14 taco circulator pump and a plate exchanger. Is this picture of the layout helpful?
Northern Maine
 
Stove/Furnace Make: CENTRAL Boiler CL-5648
Stove/Furnace Model: CL-5648

Re: Stoker Coal Boiler that would best meet my needs

PostBy: Rob R. On: Mon Nov 12, 2012 9:20 am

Northern Maine wrote:
Rob R. wrote:Can you explain the system that distributes the heated water to each house?

If it is pex tubing, what size?
How long is it?
Heat exchangers?
Circulator size?

You can have the biggest boiler in the state of Maine, but your distribution system can only move so many btu's.


Lets start with drawing a triangle and put a home on each corner. At the top of the triangle is my home...60 ft from the out door boiler. On each of the other corners is a home which, is 150 ft from the boiler. 1 inch pex (insulated) running to each home respectively (both out and in lines). My home and the home heated to 45 degrees each have a #9 taco circulator pump (both these homes are open loop systems). The other home has a #14 taco circulator pump and a plate exchanger. Is this picture of the layout helpful?


Are you saying 2 of homes are connected directly to the wood boiler without plate heat exchangers?
Rob R.
 
Stoker Coal Boiler: EFM DF520
Coal Size/Type: Rice/buck
Other Heating: Dad's 1953 EFM Highboy

Re: Stoker Coal Boiler that would best meet my needs

PostBy: Northern Maine On: Mon Nov 12, 2012 9:24 am

Yes two of the homes are connected to the boiler without a plate exchanger
Northern Maine
 
Stove/Furnace Make: CENTRAL Boiler CL-5648
Stove/Furnace Model: CL-5648

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Re: Stoker Coal Boiler that would best meet my needs

PostBy: Rob R. On: Mon Nov 12, 2012 9:26 am

That is a very bad idea. I hope you are diligent about treating the water in the wood boiler.
Rob R.
 
Stoker Coal Boiler: EFM DF520
Coal Size/Type: Rice/buck
Other Heating: Dad's 1953 EFM Highboy

Re: Stoker Coal Boiler that would best meet my needs

PostBy: Northern Maine On: Mon Nov 12, 2012 9:28 am

I change the water yearly and put clean soft water in it...I test the water 4 times a year and add chemicals as appropriate, but to date have had to add very little
Northern Maine
 
Stove/Furnace Make: CENTRAL Boiler CL-5648
Stove/Furnace Model: CL-5648

Re: Stoker Coal Boiler that would best meet my needs

PostBy: lsayre On: Mon Nov 12, 2012 9:58 am

Northern Maine wrote:I change the water yearly and put clean soft water in it...I test the water 4 times a year and add chemicals as appropriate, but to date have had to add very little


Is yours an open or closed (pressurized) system?
lsayre
 
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Anthracite Pea
Other Heating: Resistance Boiler (if I ever get it fixed)

Re: Stoker Coal Boiler that would best meet my needs

PostBy: Northern Maine On: Mon Nov 12, 2012 10:02 am

Open..unpressurized
Northern Maine
 
Stove/Furnace Make: CENTRAL Boiler CL-5648
Stove/Furnace Model: CL-5648

Re: Stoker Coal Boiler that would best meet my needs

PostBy: lsayre On: Mon Nov 12, 2012 11:24 am

I would think that your heat loss would be less and you would eliminate a bunch of water testing headaches if you ran a pressurized (low pressure, 12 PSI) system. I gather that for wood boilers (as with solar hot water systems) unpressurized systems with a huge heat storage tank and exchanger are common. This is not necessary and is not desired for coal.
Last edited by lsayre on Mon Nov 12, 2012 7:32 pm, edited 1 time in total.
lsayre
 
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Anthracite Pea
Other Heating: Resistance Boiler (if I ever get it fixed)

Re: Stoker Coal Boiler that would best meet my needs

PostBy: whistlenut On: Mon Nov 12, 2012 11:34 am

ASME................ pressure vessel, that is why......can't blow up if it has no pressure. Water chemistry is VERY important......Oxygen in the water medium cause all sorts of issues,
but permitting and compliance leads the manufactures to 'Open Top' design. Ever hear: Built to a standard and not a price point? Axeman-Anderson knew which road to travel from the beginning....... Too nice outside, park the damned computer and go do something, even if it's wrong!!!! Look over the 'Honey Do List' and get a few brownie points! Make sure your flag is hanging free in the breeze. A great day to be alive!!......because of many who were not as fortunate.
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: Stoker Coal Boiler that would best meet my needs

PostBy: Northern Maine On: Mon Nov 12, 2012 11:41 am

Cannot pressurize the out door boiler...when we replace it with a coal stoker...Im sure we will be back in the pressurized realm again!
Northern Maine
 
Stove/Furnace Make: CENTRAL Boiler CL-5648
Stove/Furnace Model: CL-5648

Re: Stoker Coal Boiler that would best meet my needs

PostBy: Northern Maine On: Mon Nov 12, 2012 2:29 pm

Just contacted my local coal dealer in my town (CENTER FARMS) and coal has only gone up $5 to $285 a ton with free delivery because I only live 5 miles away! This is a very good price considering our location! Can't wait for summer so we can switch! :D
Northern Maine
 
Stove/Furnace Make: CENTRAL Boiler CL-5648
Stove/Furnace Model: CL-5648

Re: Stoker Coal Boiler that would best meet my needs

PostBy: tikigeorge On: Mon Nov 12, 2012 9:49 pm

Don't forget to look at a Keystoker from Schuylkill Haven, PA http://www.keystoker.com
Last edited by tikigeorge on Mon Nov 12, 2012 9:58 pm, edited 1 time in total.
tikigeorge
 
Stoker Coal Boiler: Keystoker KA-6
Stove/Furnace Make: Keystoker
Stove/Furnace Model: KA-6

Re: Stoker Coal Boiler that would best meet my needs

PostBy: lsayre On: Mon Nov 12, 2012 9:55 pm

The KD-12 looks like it would do the job. Keystoker boilers are noticeably less expensive than the others also.
lsayre
 
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Anthracite Pea
Other Heating: Resistance Boiler (if I ever get it fixed)

Re: Stoker Coal Boiler that would best meet my needs

PostBy: Scottscoaled On: Tue Nov 13, 2012 8:09 pm

Hey Larry. How Is it a chemist, who has a hard time deciding whether to use peanut oil or light mineral oil, to oil his coal, knows so much about coal boilers? Are you the same Larry who posted about 500 questions how to install your AA130. The same Larry who posted 500 times trying to decide which boiler to use? How did you find out so much about coal boilers in such a short time? The fact is, you are not really helping someone here. I might know every technical thing about a new Harley, but untill I actually ride one, my opinion means nothing. Same goes for the new Honda :)
Scottscoaled
 
Stoker Coal Boiler: EFM 520x4, 350, 700. Van Wert 400 x 2, 800, 1200.
Coal Size/Type: Lots of buck

Re: Stoker Coal Boiler that would best meet my needs

PostBy: EarthWindandFire On: Tue Nov 13, 2012 8:20 pm

Funny, this is coming from a guy with 3% of his postings about Name Changes?

New name
EarthWindandFire
 
Hot Air Coal Stoker Furnace: Leisure Line Lil' Heater.
Hand Fed Coal Stove: Hitzer model 75.
Other Heating: Oil and Natural Gas.

Visit Lehigh Anthracite