Secondary Burn

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At one point, when it was in the basement of the house, I thought the problem might be this...

http://www.gulland.ca/florida_bungalow_syndrome.htm

...and it still may be part of the problem. But now it's in a single story building with a short chimney (shrug)
I've watched it... the secondary shoots jets of flame down into the wood, burning the top into ash and coals that basically smother everything underneath. After that the air just flows over the top of the ashed-over coals (hence my opinion that air coming in from the top is stupid). Experience has taught me that air coming from under the fire, and flowing up through the coal bed, keeps them screamin' friggin' hot, burns the bottom coals first, causing the ash to fall through the grate, which exposes the next layer of coals above to the air flow. How can it possibly be "better" to pass the air over the top of the coal bed, turning the upper layer to ash, thereby limiting or eliminating air from getting to the lower coals?? In my mind, that's just backazzwards... and it sure can't make them burn near as hot (longer yeah, but not near as hot).

OK, secondary combustion makes a lot of heat... I've never denied that.
It's what happens after the secondary shuts down that I find idiotic. I'd much rather have a more even heat throughout the burn than the early nuclear blast followed by luke-warm coffee.
*
What I am trying to say is that not all of these stoves are doing what yours is. Mine does not "ash over and smother the fire" and I get good complete burns with no charcoal or unburned pieces.
 
At one point, when it was in the basement of the house, I thought the problem might be this...

http://www.gulland.ca/florida_bungalow_syndrome.htm

...and it still may be part of the problem. But now it's in a single story building with a short chimney (shrug)
I've watched it... the secondary shoots jets of flame down into the wood, burning the top into ash and coals that basically smother everything underneath. After that the air just flows over the top of the ashed-over coals (hence my opinion that air coming in from the top is stupid). Experience has taught me that air coming from under the fire, and flowing up through the coal bed, keeps them screamin' friggin' hot, burns the bottom coals first, causing the ash to fall through the grate, which exposes the next layer of coals above to the air flow. How can it possibly be "better" to pass the air over the top of the coal bed, turning the upper layer to ash, thereby limiting or eliminating air from getting to the lower coals?? In my mind, that's just backazzwards... and it sure can't make them burn near as hot (longer yeah, but not near as hot).

OK, secondary combustion makes a lot of heat... I've never denied that.
It's what happens after the secondary shuts down that I find idiotic. I'd much rather have a more even heat throughout the burn than the early nuclear blast followed by luke-warm coffee.
*


I got it!!

heh heh heh, you'll like this..

Flip the stove upside down!
 
Careful, big fella. You already got your hand slapped for your histrionics once here. Quick, delete the post so nobody will see you said you were sorry.

All of these boil down to the same glue: people like their stoves and you can't stand it, owning as you do a free one that you started bollixing up the moment somebody extended the first ounce of charity towards you by giving it to you, and it's been everyone else's fault but yours for that ever since.
 
How can it possibly be "better" to pass the air over the top of the coal bed, turning the upper layer to ash, thereby limiting or eliminating air from getting to the lower coals??
Hot coals cook the volatile compounds out of the wood, which rise to meet the hot air coming from above and burn. My fire does not get smothered by ash.

Your only burn strategy seems to be to burn the wood as fast as possible with maximum energy output rate at all times. There are other approaches.
 
I've watched it... the secondary shoots jets of flame down into the wood, burning the top into ash and coals that basically smother everything underneath.
Mine never shoots flame onto the wood unless I have stacked it right up against the tubes. The secondary action is more just flames floating around in mid air. As a matter a fact, the best secondary action comes with a half load. There is usually a lil flame toward the bottom, air coming from the air wash because I usually plug the boost air off after initial firing. and then the top of the box is full of those "ghost flames"
 
Hot coals cook the volatile compounds out of the wood, which rise to meet the hot air coming from above and burn. My fire does not get smothered by ash.

Your only burn strategy seems to be to burn the wood as fast as possible with maximum energy output rate at all times. There are other approaches.
There are not other approaches if he needs more heat than that stove can produce. It seems to me that he is expecting to produce more heat than it was rated for. Also, IMHO his bur oak isn't dry enough to produce optimal performance in that stove. But again, that is a guess at best. I live in similar conditions and have recently burned 1.5 yr old bur oak that was stacked in a single row uncovered in the open and it didn't burn as well as the same wood that was in my open on all sides wood shed. I don't have a moisture meter but was my observation.
 
I don't understand that either! This is my PE stove after day 3 of burning 24/7. I will be dumping the ash after it burns down a bit more but it's still pumping out enough heat to feel from over 10 ft away! That little stove is one of the best purchases I've ever made! However, I've had times where I have had some serious charcoal build up and I have attributed it to wood species and over loading. It's a rare occasion.
And what you show is exactly the problem Spidey has with these stoves - the heat output in the part of the burn you show there is not enough to keep his house or shop warm. He needs constant max output rate and so must have air flow pulled or blown through the fire at all times.
There are not other approaches if he needs more heat than that stove can produce. It seems to me that he is expecting to produce more heat than it was rated for.
I agree!
 
And what you show is exactly the problem Spidey has with these stoves - the heat output in the part of the burn you show there is not enough to keep his house or shop warm. He needs constant max output rate and so must have air flow pulled or blown through the fire at all times.

I agree!

Me too, but he's not going to shut up about it.
 
What I am trying to say is that not all of these stoves are doing what yours is.
Yes, I know that, I've said that, I've admitted that, I've conceded that... I don't know what else to say to that.

...it's been everyone else's fault but yours for that ever since.
Your making that up. I don't recall placing blame on anyone... certainly not everyone.

Your only burn strategy seems to be to burn the wood as fast as possible with maximum energy output rate at all times.
Crystal ball again?? Did you read post #189 and #199??

#189 - "...takes about 20-30 minutes before it's making good heat and the secondary is crankin'. Throttle it back and shop temperature rises about 10°-15° over the next 1-1½ hours or so..."??
#199 - "...I'd much rather have a more even heat throughout the burn than the early nuclear blast..."??

Does that sound like I'm trying, or wanting to burn as fast as possible... at max output??

Also, IMHO his bur oak isn't dry enough to produce optimal performance in that stove.
Man-o-man... this repeating yourself gets bothersome.
Did you read post #189??

#189 - "Oh... I'm burnin' elm, ash, Silver Maple and Cherry in the shop... split small(ish), like 3-5 inches. Yeah, it's 2 years seasoned and been stacked in the shop since first week of October."

The PE firebox ain't seen a stick of oak in something well over a year... I save oak for the furnace in the house.
B'sides, oak just fills the box full of coals faster.

Careful, big fella. You already got your hand slapped for your histrionics...
Careful?? Of what??
Histrionics?? Pretty sure my exchange with Del_ can't be characterized by histrionics.
Good word though... wrong usage.

He needs constant max output rate...
Not only do I not need it (especially at 40°), I don't want it. What I need is for the coal bed to burn instead of dieing out.
How can you guys make such a determination from what's been said??
C'mon‼ The coals die-out to near nothing burning, which means virtually no heat... and from that you deduce I'm not happy unless I have maximum stove output at all times. That's just nonsensical.

I got it!!
Flip the stove upside down!
Well... at least that addresses the issue instead of makein' excuses for it, pointin' fingers, and ignoring whats been said.
Heck, it makes more sense than what these other guys are sayin'‼
Thanks zogger, I may actually give that a shot... you the man‼
*
 
I take care of the stoves in 5 houses, two have little epa cert stoves.
One has been modified slightly with modest improvement. It may get the full treatment next summer.
The other got a box, with a door that has a sliding draft, welded to the bottom. All of the fire brick was removed except for along the back. Most of the original floor was cut away and a grate installed to alow ashes to fall into the new removable ashpan. A retractable cover was made for the secondary air inlet so it can be closed or opened as needed.
The stove now is easy to start a fire in(without leaving the door open), in complete control at all times, no more coal build-up problems, and more than three small sticks of wood can be put into it at the same time. And, for the short time it is appropriate, there is secondary burn.
 
Your wood is not seasoned well enough no matter what the species.
1371681979_f4f99b4e892d635afc8e8801205f8e54.jpg
 
Histrionics: behavior or speech for effect,as insincere or exaggerated expression of an emotion;dramatics; operatics:

From Dictionary.com.

You should see if they would put your picture next to the definition, WS.

I generally know what the words mean.
 
That was pretty rude. I have the same problems as Spidey. Am Ian incompetent idiot as well? All of your posts say the same thing. I burn well seasoned wood in a clean appliance as slowly as possible. I have the same coaling issue that he and others do. I burn fairly small splits, 4"x4"-6"x6" at the max by about 18"long. It makes no difference loading N/S or E/W. Above 38-30° it runs like a champ. Under that it builds coals that eventually have to be removed, live. My wood isn't covered, but it sits inside the house (about 12' away from the stove) for a week before burning. What about any of this is idiotic?
youd have to know him from his past.. which is considerably twisted....he LOVES fairys and gnomes.. they are his talking buddys...
 
And what you show is exactly the problem Spidey has with these stoves - the heat output in the part of the burn you show there is not enough to keep his house or shop warm. He needs constant max output rate and so must have air flow pulled or blown through the fire at all times.

I agree!

Which would indicate the appliance is undersized for the application but it still doesn't explain the coaling issue. I've never had issues in my quad burning coals down even when burning hardwood.
 

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