That wood is too dry to burn!

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BrotherBart said:
Not to mention, where ya gonna find a "modern airtight stove". That dates'em quite a bit.

That was the first thing I picked up . . . air-tight stove . . . not too many modern ones being built now . . . although it's funny . . . some folks not in the know still insist that these "modern air-tight" stoves work great . . . and they're usually referring to the old Ashleys.
 
Hey now . . . easy on the anti-government rhetoric folks . . . I mean . . . I am with the government . . . and I'm here to help. ;) :)
 
firefighterjake said:
BrotherBart said:
Not to mention, where ya gonna find a "modern airtight stove". That dates'em quite a bit.

That was the first thing I picked up . . . air-tight stove . . . not too many modern ones being built now . . . although it's funny . . . some folks not in the know still insist that these "modern air-tight" stoves work great . . . and they're usually referring to the old Ashleys.
I know the air-tight name is not used any more and why is that, the new stoves fit the description don't they?
 
Battenkiller said:
This info isn't just coming from the U.S gov't. My 35 year old wood stove book talks about it and the other information cited here comes from the website of John Gulland, an industry leader and a very knowledgeable resource regarding all things wood burning.

I am to new to get to deep into this discussion, a quick search shows it has been hashed over once or twice before.

But I would make an observation of this part of the argument quoted above... Unless you are burning a stove from 40 years ago or so, I doubt very much that the info in that book is very relative to a modern stove system. Heck I have a 35 yearold college text book right here that says no computer is capable of handling or using 4 MEGS of ram. Doesn't mention the internets at all.. in fact doesn't comment on a hard drive, and it's not like I may have missed it in class, got an A+. The world has moved on, technology has gone forward.

My owners manual gives a description of what wood to burn best, moisture wise. I figure they paid some engineer a good salery to determin it. Until I see evidence that they are wrong in my stove, I will believe them. Cleaned my chimney on Saturday with a sooteater, Looks pretty clean to me, had less then a 1/2 cup of crap from the pipe. 'bout 6 weeks of burning.
 
Dakotas Dad said:
Battenkiller said:
This info isn't just coming from the U.S gov't. My 35 year old wood stove book talks about it and the other information cited here comes from the website of John Gulland, an industry leader and a very knowledgeable resource regarding all things wood burning.

I am to new to get to deep into this discussion, a quick search shows it has been hashed over once or twice before.

But I would make an observation of this part of the argument quoted above... Unless you are burning a stove from 40 years ago or so, I doubt very much that the info in that book is very relative to a modern stove system. Heck I have a 35 yearold college text book right here that says no computer is capable of handling or using 4 MEGS of ram. Doesn't mention the internets at all.. in fact doesn't comment on a hard drive, and it's not like I may have missed it in class, got an A+. The world has moved on, technology has gone forward.

My owners manual gives a description of what wood to burn best, moisture wise. I figure they paid some engineer a good salery to determin it. Until I see evidence that they are wrong in my stove, I will believe them. Cleaned my chimney on Saturday with a sooteater, Looks pretty clean to me, had less then a 1/2 cup of crap from the pipe. 'bout 6 weeks of burning.
What moisture content does it recomend, I do believe this is a little over blown, wood heat.org just was stating that when the wood was a little "too dry" the effientcy of the stove went down some, as for as old books not relating to the new wood burners only is some small ways, all the old material I have talks about how the wood should be well seasoned when burnt. All the people who burn too wet a wood just do not know what they are doing period, wet wood did not burn well in the old stove no matter what you read on some of the forums.
 
BeGreen said:
"The right band of firewood moisture is between 15 and 20%."

Sounds about right to me, but I don't have a moisture meter. I use my skin to test the wood moisture.

I thought you were a sound believer in the liquid soap bubble test? :lol:
 
savageactor7 said:
I'm not one to take anything our government says as gospel.

Amen Brother!

pen
 
oldspark said:
What moisture content does it recommend, I do believe this is a little over blown, wood heat.org just was stating that when the wood was a little "too dry" the efficiency of the stove went down some, as for as old books not relating to the new wood burners only is some small ways, all the old material I have talks about how the wood should be well seasoned when burnt.

Old spark, I strongly believe that a given chunk of wood dropped on a bed of coals will do the same thing today as it would 35 years ago, or 35,000 years ago. What the stove does to it once that happens has changed over the last 35 years.

The older airtights could provide plenty of air for a good burn, but folks quickly learned they could get longer burns by shutting the air almost all the way, producing smokey burns - even with dry wood. That's the reason for the EPA testing, and stoves had to be designed to prevent that from happening. Therefore, the new stoves were no longer "airtight" (hell, no stove is really air-tight), but were limited in how far down you could turn the intake air. So they are now called "controlled combustion" stoves, but they are still airtight in the same way that the first airtights (seams, gaskets, etc. don't allow air in anywhere but where it is designed to enter) were with the exception of the lower limit on combustion air, which is now fixed at a predetermined minimal opening.

As far as the Woodheat.org article, here is what John Gulland actually has to say:

-water acts like a regulator of the combustion process along with a few other factors like piece size, load configuration and combustion air supply.

-Conversely, the dryer the wood, the more quickly it breaks down when heated. By breaking down, I mean the vaporization of the volatile components of the wood; that is to say, it smokes. The dryer the wood, the more dense is the smoke at a given heat input rate.

-The problem is that a firebox load of very dry wood produces far more smoke than the air supplies of stoves are designed to provide. Besides, even if you could supply enough air, you would produce an inferno

-Wood that is very dry produces a fire that is hard to control without making a lot of smoke.

-
I suppose that firewood could get very dry by natural seasoning in desert conditions. Or firewood stored in old barns, which are like kilns in hot summer weather.

-The right band of firewood moisture is between 15 and 20%.

-The main difference between EPA low-emission certified stoves and conventional stoves is that you can turn down EPA stoves for a long burn without extinguishing the flames. That is, they are better at producing a clean, controlled fire. But they are designed for wood that has a moisture content of twenty percent plus or minus one or two percent. Once you go far outside this band, their emission rate goes up. So even the best wood stove's performance will suffer if the wood is not in the right moisture range.

-If you have some very dry firewood, like kiln-dried cut offs or old wood stored in a hot place, mix it with regular firewood to raise the moisture content of a full load.

These are the points Gulland made that I feel are most important. Being as how he's a Canadian and is a world renowned wood burning specialist, I think we can take it for granted that he's not some bureaucrat sitting in an office with the Dept. of Energy. I do find it funny, though, that folks don't trust their own government in any way, but have no problem accepting as gospel what the folks who have the most to gain - the manufacturers - are telling you. To say that half of what they are claiming is hyperbole is an understatement. Once the marketing division gets that stove installed on your hearth, their job is done. It's up to you to figure out what to do with it now that it's there.


Here's a link to the Intertek website that shows the EPA test requirements:

http://www.intertek-etlsemko.com/po...G/HEARTH_PRODUCT_TESTING_PG/EPA_DATA_SHEET_PG

Most notable to me is the choice of test fuel:

Air-dried Douglas Fir with moisture content between 19 and 25% (dry basis) is cut to 5/6 the largest length of the firebox.

If the firebox volume is:

* <1.5 cu. ft. use all 2x4’s
* 1.5 to 3 cu. ft. use half the weight in 2x4’s and the rest 4x4’s
* >3 cu. ft. use all 4x4’s

These tests were created years ago within the EPA itself. There were many scientists involved with developing this standard. Now why are they testing these stoves with wood specifically within this MC range when the ideal MC is supposedly much lower? John Gulland states that some water is necessary for the controlled combustion of wood. How much? Not sure, but it seems that if you deviate too far from the 15-25% MC range in either direction you will start to have reduced efficiency and increased emissions. That would lead me to think that somewhere near 20% MC is just about the "Goldilocks" MC. There are huge areas of the U.S. where the RH will bring the MC of wood down into 12% range or lower after 2-3 years of seasoning, and they aren't all in the Mohave either.

http://www.woodweb.com/knowledge_base/Equilibrium_moisture_content_of_wood_in_outdoor_lo.html

Is 12%, or even 15%, better than 20%? I don't know, but until someone climbs up on their roof and starts measuring the particulate matter in their flue gases, I'll stick with an expert like Gulland and stay within the "ideal" range.
 
Battenkiller said:
Backwoods Savage said:
In the winter of 2007-2008 plus the winter of 2008-2009 we burned wood that was 6-7 years since splitting and stacking. Was that wood too dry? Did it create creosote?

Dennis, you could season that wood for 6 years or 7 years or 67 years... it ain't ever going to get lower than about 15% MC in your location (16% is what will be found all throughout Michigan in December for outside-stored wood ) regardless of what you think. No one is arguing about 15% MC being dangerous.

And your campfire comparison is irrelevant. We're talking wood stoves here. Still, I have burned well over 5000 open-air fires in my 50+ years of playing with fire. Some of them have been real doozies. My observations should be as valid as the next guy's. I've tossed freshly cut pine - virtually unburnable in a wood stove - on a huge campfire and never observed much smoke at all. There was so much heat and so much available air that the outside of the logs dried and burned almost simultaneously.

This info isn't just coming from the U.S gov't. My 35 year old wood stove book talks about it and the other information cited here comes from the website of John Gulland, an industry leader and a very knowledgeable resource regarding all things wood burning.


Battenkiller, you seem to like to throw around that your knowledge is the only believable knowledge out there and your 35 years of wood burning and now your 35 year old book, etc. Okay. Maybe my 50+ years of wood burning has all been in vain........but I'm reading a bunch of baloney on here from time to time or is it just someone who wants to attempt to build up their ego. Sorry for the rant and no, I do not intend to start anything; just felt I had to write this. It just seems that our experience tends to be a bit different. So go ahead and do things your way and please do not feel you have to try to explain your theories umpteen times.

Thank you and good luck battling that smoke and creosote. We have no problems with it.
 
Backwoods Savage said:
but I'm reading a bunch of baloney on here from time to time or is it just someone who wants to attempt to build up their ego. Sorry for the rant and no, I do not intend to start anything; just felt I had to write this.

Jeez, Dennis, why the hostility? I'm not attacking you personally, just some of your notions that I strongly disagree with. Sorry if you disagree with my facts just because they don't fit your observations. I don't have ego boosting in mind, just trying to bring about better understanding. Some here have voiced their appreciation of that, some have heaped upon ridicule. So be it. Some folks like scientific facts (that's what they used to design your stove, eh?), others like to stick to the status quo because they are comfortable with it. I'm a scientific fact type of guy, so excuse me for thinking like I do. When you can show me any hard scientific evidence that disputes any of the "baloney" I've supposedly been spouting off about here, present it here and I'll eat my crow dinner. In the meantime, I'm going fishing. Wood heating season is so over for me.
 
Battenkiller said:
Backwoods Savage said:
but I'm reading a bunch of baloney on here from time to time or is it just someone who wants to attempt to build up their ego. Sorry for the rant and no, I do not intend to start anything; just felt I had to write this.

Jeez, Dennis, why the hostility? I'm not attacking you personally, just some of your notions that I strongly disagree with. Sorry if you disagree with my facts just because they don't fit your observations. I don't have ego boosting in mind, just trying to bring about better understanding. Some here have voiced their appreciation of that, some have heaped upon ridicule. So be it. Some folks like scientific facts (that's what they used to design your stove, eh?), others like to stick to the status quo because they are comfortable with it. I'm a scientific fact type of guy, so excuse me for thinking like I do. When you can show me any hard scientific evidence that disputes any of the "baloney" I've supposedly been spouting off about here, present it here and I'll eat my crow dinner. In the meantime, I'm going fishing. Wood heating season is so over for me.
:lol: Diai! Good lux fishings.
 
Hey to everyone that has responded.... I appreciate your ideas on all sides of this issue. There is plenty of truth on both sides and I think most things we all agree on.

My conclusions:
Wood burns best in a stove when seasoned to somewhere from 15-22% moisture content. The absolute best % may vary based on your wood-burner.
There is an optimum level of moisture content that maximizes the ability to achieve and control high temperature burns without losing excess burnable gases (smoke) up the chimney.
The department of energy is capable of making mistakes too - although most of the article is good.
While very unlikely - in the event that you burn significant amounts of extremely low % MC wood (kiln dried) - these fires could be difficult to control and may lead to less efficient heating - due to loss of combustible gasses up the chimney.
Most of us will never encounter such a problem since the natural RH of outside air will tend to hold moisture in wood at a fairly constant rate - not low enough to cause the problem listed above.

Thanks!
 
Battenkiller said:
Backwoods Savage said:
but I'm reading a bunch of baloney on here from time to time or is it just someone who wants to attempt to build up their ego. Sorry for the rant and no, I do not intend to start anything; just felt I had to write this.

Jeez, Dennis, why the hostility? I'm not attacking you personally, just some of your notions that I strongly disagree with. Sorry if you disagree with my facts just because they don't fit your observations. I don't have ego boosting in mind, just trying to bring about better understanding. Some here have voiced their appreciation of that, some have heaped upon ridicule. So be it. Some folks like scientific facts (that's what they used to design your stove, eh?), others like to stick to the status quo because they are comfortable with it. I'm a scientific fact type of guy, so excuse me for thinking like I do. When you can show me any hard scientific evidence that disputes any of the "baloney" I've supposedly been spouting off about here, present it here and I'll eat my crow dinner. In the meantime, I'm going fishing. Wood heating season is so over for me.

Battenkiller, I am not attempting to be hostile but only wanted to point out how your posts seem to come across. Just read your third sentence above for one example. Facts do not fit my observations? Okay! As I stated, it just looks like you need some ego boost so you make out as if your word or idea is the only one worth anything. After all, you keep posting for the umpteenth time...

Be scientific; that is not all bad. But do not believe everything you read that appears to be scientific and do not think that something you don't happen to believe is not scientific. When one reads something and then observes something else happen; which is correct? It appears there are more than a few folks here who agree with me. Nuff said.

If I read your post wrong then I sincerely apologize. I do not mean to make enemies of anyone on this forum or any where else. I just post what I have found to be true and not just something that I have read. Many times I read supposedly truths but later find them to be wrong. I also have thought that I've been right only to find later that I am wrong and am never afraid to admit that.
 
Backwoods Savage said:
Battenkiller said:
Backwoods Savage said:
but I'm reading a bunch of baloney on here from time to time or is it just someone who wants to attempt to build up their ego. Sorry for the rant and no, I do not intend to start anything; just felt I had to write this.

Jeez, Dennis, why the hostility? I'm not attacking you personally, just some of your notions that I strongly disagree with. Sorry if you disagree with my facts just because they don't fit your observations. I don't have ego boosting in mind, just trying to bring about better understanding. Some here have voiced their appreciation of that, some have heaped upon ridicule. So be it. Some folks like scientific facts (that's what they used to design your stove, eh?), others like to stick to the status quo because they are comfortable with it. I'm a scientific fact type of guy, so excuse me for thinking like I do. When you can show me any hard scientific evidence that disputes any of the "baloney" I've supposedly been spouting off about here, present it here and I'll eat my crow dinner. In the meantime, I'm going fishing. Wood heating season is so over for me.

Battenkiller, I am not attempting to be hostile but only wanted to point out how your posts seem to come across. Just read your third sentence above for one example. Facts do not fit my observations? Okay! As I stated, it just looks like you need some ego boost so you make out as if your word or idea is the only one worth anything. After all, you keep posting for the umpteenth time...

Be scientific; that is not all bad. But do not believe everything you read that appears to be scientific and do not think that something you don't happen to believe is not scientific. When one reads something and then observes something else happen; which is correct? It appears there are more than a few folks here who agree with me. Nuff said.

If I read your post wrong then I sincerely apologize. I do not mean to make enemies of anyone on this forum or any where else. I just post what I have found to be true and not just something that I have read. Many times I read supposedly truths but later find them to be wrong. I also have thought that I've been right only to find later that I am wrong and am never afraid to admit that.

So . . . uh . . . are you saying you're ready to admit that splitting horizontally is the best way to split wood and that you were wrong in asserting the best way is to split it vertically while sitting down? ;) :)
 
I think we all just need a group hug :lol:
 
firefighterjake said:
So . . . uh . . . are you saying you're ready to admit that splitting horizontally is the best way to split wood and that you were wrong in asserting the best way is to split it vertically while sitting down? ;) :)


:lol:

Hey Jake, one still has to be realistic! Therefore, I'll continue sitting while splitting vertically! :lol:
 
I think, as with many things when it comes to wood stoves, YMMV. All the time. What 2 or 2k people see from the "same stove" can be very different.

Take REF1.. he has/had the same stove as us. His install was fine. His house is smaller. His chimney taller. His wood better seasoned, He has years of experience, many stoves under his belt.

His Homestead experience has been NOTHING like ours. Maybe it's because we are total noobs, on our first and probably only stove. We just don't know it could be better..lol.

But we love ours, burns great, heats the house fine. Uses wood at a rate my research says is about normal, given it's cherry and only seasoned 8 months when we started burning. Should be better next winter.

Point being in any 2 installs, even with the same stove what YOU SEE and therefore BELIEVE to be fact, can be very different from what the other guy SEES and knows to be FACT.

Sometimes it's hard for two or more people to understand that well, facts or results, can vary depending on things we don't think of as being "different", but somehow are.

But we KNOW we are right, and the other guy is wrong.

I will tell you whats wrong. I don't have all my firewood for 11-12 CSS yet and had to run the darn AC yesterday..
 
Backwoods Savage said:
firefighterjake said:
So . . . uh . . . are you saying you're ready to admit that splitting horizontally is the best way to split wood and that you were wrong in asserting the best way is to split it vertically while sitting down? ;) :)


:lol:

Hey Jake, one still has to be realistic! Therefore, I'll continue sitting while splitting vertically! :lol:

Wow . . . didn't take you long to find this "jab" at ya, huh? ;) :)
 
Backwoods Savage said:
Battenkiller, I am not attempting to be hostile but only wanted to point out how your posts seem to come across. As I stated, it just looks like you need some ego boost so you make out as if your word or idea is the only one worth anything. After all, you keep posting for the umpteenth time...

If I read your post wrong then I sincerely apologize. I do not mean to make enemies of anyone on this forum or any where else. I just post what I have found to be true and not just something that I have read. Many times I read supposedly truths but later find them to be wrong. I also have thought that I've been right only to find later that I am wrong and am never afraid to admit that.

Gee, Dennis, I already said you misread my post. Why bring up the ego boosting thing again? I really don't need any ego boost, trust me. I am a well regarded professional woodworker in my area, so any ego boosting needs I may have get met adequately by my peers, thank you. Most of the stuff I post here is the result of folks saying things that just make my jaw drop in disbelief. I feel obliged to correct these things if I have a chance, just like you seem to. If you see that as a need for attention, so be it. But your posting rate is almost 2000 posts/year. You have posted for the umteenth time the necessity of having 3+ years of wood on hand, even though it is impractical or impossible for many folks to do this. Or how many cord of wood you have on hand or pics of all your stacks. C'mon, what's with that if not ego?

Maybe I shouldn't try at all, I really have important things that I sometimes put off in order to provide help. Yeah, sometimes a pissing contest gets started by someone who thinks I'm full of it. I'm not the kind of guy to duck and run in that event, although I am learning. I do my very best to think things through from a logical point of view and then to do the research for facts. That's the beauty of the Interweb - the information is out there. I admit, my presentation may come off at times at officious, but that is not my intent. And I try to leave anecdotal stuff or personal observation out of my posts unless I can support those things with facts.

For example, I have noticed you mentioning that ash is one of the most rot-resistant woods out there, but my personal experience, both in firewood and in boat building, has proved to be otherwise. Ash is considered by the woodworking community to be a non-durable (very prone to rot) species. I have had 16" logs of ash lose a lot of BTUs just sitting on pallets for 3-4 years. Sure they burned, but I could tell when I split them they were not what they once were. So your observations are different from mine, but mine are supported by the industry.

You seem to think I just find Wiki facts, accept them as gospel, and present the info here as my own. True, I do use the net to double-check my thinking when I can find the right info, but most of what I have posted here is just general knowledge to me that I can't seem to understand how folks can't get. Simple physics concepts like moisture gradients and heat transfer (tricky one there) and draft and relative humidity, most of it based on very basic thermodynamics learned in an entry level college course. I repeat these facts because folks are constantly getting hung up on these concepts, maybe because they never took physics or organic chemistry or whatever. My repetitious stating of these facts is only an attempt to get through to those folks. If it's not helpful or appreciated by the community... hell, saves me a bunch of time. I try my best to stay out of install posts and specific stove problems because I don't have the knowledge to speak of these things with any authority. I drop my two cents in on occasion there, but I mostly think that is for the experts.


Regarding this thread, it is a fact that dry wood pyrolyzes faster than wet wood, and that small splits pyrolyze faster than large ones. If you have a stove that is designed for "X" amount of smoke to be burned off by secondary air or a combustor at a given burn rate, it makes perfect sense to me that deviating either way from the ideal will give less than a desirable result. Everything I have read or been told by experts over the years leads me to the conclusion that wood of 18-20% MC is that ideal, and that splits in the 6-8" range are probably the best compromise. I've never had wood around outside long enough to get much lower, but I can tell you that the wood I dry in a few weeks with fans inside my basement burns like rocket fuel in my stove. When it's in there too long, I get smokier burns at startup. Toward the end of the season, I resort to mixing in wetter wood to slow down the pyrolysis of the load and the smoke goes away. That's my observation, and the industry facts support my observation.


No one is claiming that observation is without merit. Without observation, there would be no science. But facts plus observation are better than just observation by itself if you want to achieve a deeper understanding. That's why I finally decided to check the MC of my wood to confirm what I had already observed.

You know, I see a lot of hooey posted here by first year (sometimes first week) burners, and I don't see them getting flamed here. It is probably my tone that so offends you. I find it very difficult to disagree with folks on the net, and this wouldn't be the first time I've offended someone on a forum, but I'm a very direct kind of guy when I feel the need to make a point. You would not find me so objectionable in person, trust me. But next time, don't call me out in public on it, OK? We have a PM system here. To date, no one has used it to say anything that wasn't supportive. I don't participate in Internet flaming, and I do get offended by it when it is directed my way.
 
I think this thread has run its course.
 
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