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Discussion Starter · #1 ·
I am wanting to build an outdoor wood boiler... I was thinking just an old 80 gallon propane tank for a fire box and a piece of 24 inch pipe recessed in the top for water with an out let to run to a heat exchanger in my furnace... Can this be done and if so what would I need for water capacity??
 

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Ayuh,.... I can't visualize what yer sayin', but it sounds kinda small, actually more like Tiny....

I built mine with a 400 gallon propane tank firebox, inside a 500 gallon steel pressure tank, for a head of 100 gallons...
'n the inner tank also has nearly 40' of 2x4 steel tubin' welded inside, as more heat exchanger...
The inner tank, is Completely surrounded by water...
It's also run at 12/ 15psi, like the house boiler, insteada bein' an open, non-pressurized type...

The firebox is 'bout 3'x 5', 'n I burn chunk wood,...
When outside temps are above 0°, I pack it full, twice a day...
Temps as they are now, -0°, I'm up to 3 times a day...

I'm heatin' a 100 year old farm house that was built several times, without a plan,...
Basically uninsulated, with bad windows, 'n drafts 'bout everywhere...

Have a look 'round Here,... Good info, but slow traffic, 'n a whole forum for Home Builders...

Sounds like you could get away with an open system, which is easier to build...
But yer plan sounds too small...
 

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Discussion Starter · #3 ·
Well I'm doin it to a mobile home that's about 940 sq feet total... And here in souther Missouri we very rarely have temps like that.. We do but it's rare... With my idea what would be the right sizes?
 

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Well I'm doin it to a mobile home that's about 940 sq feet total... And here in souther Missouri we very rarely have temps like that.. We do but it's rare... With my idea what would be the right sizes?
Well,... I donno,... You need a boiler big enough to provide More Btus than the house Looses...

I know my boiler has been barely keepin' up with the heat losses here, seein's it ain't gotten up to 0° in a couple of days now...

Generally speakin', the firebox is Surrounded by water, rather than just a tank on top of the firebox...

Did you look 'round the OWBoiler forum I posted the link too,..??
 
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