No visible smoke is good, right?

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Poodleheadmikey

New Member
Feb 20, 2011
68
Southern New Jersey
Last year a built a triangle shaped wood stove out of 3" by 5" steel tubes and have fiddled a bit with it since. Because I just re-lined the chimney I was outside looking up at the top and noticed that even with a pretty big fire - there is no smoke visible. Closing off the secondary air inlet didn't seem change anything. Well; maybe the pulsating moped-sound the stove makes a little, but that may have been my imagination.

Oh that reminds me: I want to ask you all another question too - about my latest wood stove concept. Would that be OK here? Or do I need to start a new topic as the new stove will have nothing to do with the one I built last year?

PHM
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Yes, no smoke is great. Any big fire will generally be clean so long as it has enough air provided. The key is keeping it clean when things are dampened down and not ripping, that's what can be hard.

Glad to hear it's working out for you. Would love to see a pic or two of this thing.

How'd you make out getting the insurance co to pass it? Always looking for wood stove friendly companies.

A new thread for a new stove would probably be a good idea. As always, just be prepared as responses may vary!

pen
 
I posted some on here last year - but I'll send you the pics again if you like.

In this triangle shaped stove I can't keep a fire burning all the time anyway - it makes so much heat that one firing makes the house overheated. And with all the insulation and air sealing I've done it takes a long time to cool off again.

PHM
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Hi Mike,
That's pretty funky looking! Do you have any pics of it finished and burning?

Ray
 
Interesting, the shape is going to make it really hot up at the top maybe making the secondaries work very well with even a small fire.
 
I haven't installed any sight-glass viewing ports but I suspect that the secondary air is what makes it smoke-less. Somebody on here gave me that idea I think. I just used the double S bends to get a better pre-heat for the secondary air intake.

The top doesn't see any actual flame - there is a substantial smoke shelf that puts the exit from the combustion chamber at the rear of the firebox. So the smoke then has to come all the way forward to the front-wall flue connection.

I just got a phone that will take pictures - I'll go take some more of the stove as finished as it is now. Although it's not firing now as the house is already too warm. <g>

PHM
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I think yeah, no smoke is a good thing. I also think even without secondary burn capability it is possible to operate a wood stove without much smoke. If you have good fuel and a hot fire that hasn't had wood added recently then smokeless is entirely possible even with a 'smoke dragon.'
 
So what did the insurance company think?

pen
 
No smoke is a good thing in my book . . .
 
Poodleheadmikey said:
My home is self-insured and I think I am perfectly capable of building a wood stove and heating system which is as safe or safer than any other.

PHM
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pen said:
So what did the insurance company think?

pen

That's fine. Just was curious was all.

I've seen fine home-made wood stoves and some that were even insured. Was honestly interested if you had found a company that would carry you and if so, what the requirements were as they are hard to find anymore.

Any pics of it all finished?

pen
 
Maybe Uncle Pen will post them after I e-mail them to him. <g>

It holds a big stack of wood. The firebox (inside and above the brick) is 27" front-to-back, 19" wide, and 36" high - to the bottom of the smoke shelf. Although piling wood much higher than about 24" high in the firebox is difficult because it's so far above the top of the loading door.

PHM
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joecool85 said:
I also want to see pics of this thing all finished up. Also rough dimensions. How much wood does it hold?
 
The base is 42" wide by 30" deep. The stove body is 49" high. Although it is sitting on 4" solid concrete blocks which makes the top of the stove about 53" above the floor.

PHM
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joecool85 said:
I also want to see pics of this thing all finished up. Also rough dimensions. How much wood does it hold?
 
Here are the pics that PHM sent.

He made mention that the wood has been removed since firing, he also shared a bunch of other info but I'll let him copy and paste that himself if he'd like.

It certainly looks like a beast PHM!
 

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Here was his message

Poodleheadmikey said:
First: I have moved all that wood well away from the stove since these pics
were taken. <g>

That stainless steel chimney liner you can see was just installed this past
week - in fact; it's not really all-done yet as the cap still isn't
installed on the top and the wall thimble portion isn't concreted in yet.

The front of the stove is bolted on with a rope gasket. That's what all
those bolts and nuts are on the front wall plate. I wasn't sure how the
inside arrangements of the stove would work out - so I wanted to have
ready-access to change them or add to them or whatever.

If you look at those earlier posted pictures you can see how the inside is
set up. It's still about the same except that this fall I cut the
second-pass / smoke-shelf plate about 8" shorter in the back.

In these pics here below you can see - down next to the air intake gate
valve - where I burned another air hole in. I am going to weld another
nipple there and put another gate valve on.

But I am really questioning the under-the-fire placement of the air inlets.
Now I am thinking that a big air inlet in the middle of the loading door
would be better as the air would be more-or-less Over the fire - rather than
under it.

I still have to make a wood handle for that door latch - it gets too hot to
touch being all metal.

Just using black smoke pipe and 90's would look neater but I already had the
corrugated stainless steel. Although I may change to regular smoke pipe as
I have a new 6" chimney-type heat-a-lator thing sitting down there. What
makes me hesitate to use it is the fact that just a single load of wood in
this stove already overheats the house for most of the day. <g> My
design-thought with this triangle stove was that the sides of the stove body
are the 3" by 5" tubes. They heat up and the air inside them rises up and
out. Cold air enters from the floor level and is then heated before flowing
up and out. All by convection so I don't have to pay to run a blower to
move the hot air around. And then with the smoke flowing up at the rear of
the firebox, forward inside - across the top of the smoke shelf plate - out
through the front smoke pipe connection, and then through the external smoke
pipe - the rising hot air from the sidewall tubes has to also flow up and
around the hot external smoke pipe to be 'super-heated'. This is another
good thing about using the corrugated stainless steel - it has much more
surface area than would just a smooth-bore smoke pipe.

BTW: in thinking about the vertical water heater stove - I thought of
something else:

Suppose I built the proposed water heater stove upright and then added
another part - like a chute - attached at one side and extending up about
4-5' at say: a 60º angle? Like a chute maybe 10-12" in diameter (or
10-12" square) with a tight lid on the upper end? The bottom edge of the
bottom end of the chute would be just above a grate in the bottom of the
actual firebox. Then once the fire was going the chute could be filled with
wood put in lengthwise. And, as the fire burned off the wood at the bottom
of the chute - more wood would keep gradually sliding down and feeding the
fire.

How would that be?

-------
 
I know it's a beast - but I've had in my head for a good while so if I didn't build it it would have bugged me forever that I hadn't brought it to life.

As Uncle Pen mentioned; Ray told me he was worried about those wood ricks being close by so I re-stacked them a ways a way now. I shot them a number of times with a thermal gun and the wood temps were always under 110º - but I wanted Ray to be able to sleep. <g>

That stainless steel chimney liner you can see was just installed this past week - in fact; it's not really all-done yet as the cap still isn't
installed on the top and the wall thimble portion isn't concreted in yet.

The front of the stove is bolted on with a rope gasket. That's what all those bolts and nuts are on the front wall plate. I wasn't sure how the inside arrangements of the stove would work out - so I wanted to have ready-access to change them or add to them or whatever.

If you look at those earlier posted pictures you can see how the inside is set up. It's still about the same except that this fall I cut the
second-pass / smoke-shelf plate about 8" shorter in the back.

In these pics here below you can see - down next to the air intake gate valve - where I burned another air hole in. I am going to weld another nipple there and put another gate valve on. Although now I may cap them both as I am really questioning the under-the-fire placement of the air inlets. Now I am thinking that a big air inlet in the middle of the loading door would be better as the air would be more-or-less Over the fire - rather than under it.

I still have to make a wood handle for that door latch arm - it gets too hot to touch being all metal.

Just using black smoke pipe and 90's would look neater I'm sure but I already had the corrugated stainless steel. Although I may change to regular smoke pipe as I have a new 6" chimney-type heat-a-lator thing sitting down there. What makes me hesitate to use it is the fact that just a single load of wood in this stove already overheats the house for most of the day. <g>

My design-thought with this triangle stove was that the sides of the stove body are the 3" by 5" tubes. They heat up and the air inside them rises up and out. Cold air enters from the floor level and is then heated before flowing up and out. All by convection so I don't have to pay to run a blower to move the hot air around. And then with the smoke flowing up at the rear of the firebox, forward inside - across the top of the smoke shelf plate - out through the front smoke pipe connection, and then through the external smoke pipe - the rising hot air from the sidewall tubes has to also flow up and around the hot external smoke pipe to be 'super-heated'. This is another good thing about using the corrugated stainless steel - it has much more surface area than would just a smooth-bore smoke pipe.

-----------------------------------


BTW: in thinking about the vertical water heater stove - I thought of something else:

Suppose I built the proposed water heater stove upright and then added another part - like a chute - attached at one side and extending up about 4-5' at say: a 60º angle? Like a chute maybe 10-12" in diameter (or 10-12" square) with a tight lid on the upper end? The bottom edge of the bottom end of the chute would be just above a grate in the bottom of the actual firebox. Then once the fire was going the chute could be filled with wood put in lengthwise. And, as the fire burned off the wood at the bottom of the chute - more wood would keep gradually sliding down and feeding the fire.

What do you all think? How would that be?

PHM
------






pen said:
Here are the pics that PHM sent.

He made mention that the wood has been removed since firing, he also shared a bunch of other info but I'll let him copy and paste that himself if he'd like.

It certainly looks like a beast PHM!
 
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