Basically coals, will fall into the air/burn path, and burn causing heat that will burn the wood on top. Image courtesy of woodheat.org I still can't quite believe it, except that I saw your latest performance videos, I'm completely impressed! Wood-burning stoves need adequate air to operate properly. This 'woodshed radiator' could be coupled with a fan, could come in quite handy for drying that $5/cord green wood, but also, used to dehydrated food stuffs, or laundry, or just be a fun place to hang out. Firewood that has been properly seasoned (cut, split, stacked to allow free air circulation, and left in the sun and air for at least 9 months) has a moisture content between 15-20%. But as the fire burns on and reduces down to coals, there is far less smoke produced. burns and allows more wood smoke to be consumed by the secondary combustion system. My daughter had to have her appendix removed. once it is lit, I can even turn the burn down to a really slow burn, and it still keeps the secondary burn going (at least it did in my short test run). DIY wood burning stove - secondary burn working well - YouTube During a chimney sweep and inspection, we will inspect any warping or discoloration in the firebox, and assess whether or not it’s severe enough to cause a problem. Not bad … I thought I would post an update if anyone is interested. I like the fact that you decided to use the 2" size collector nozzle, which seems well matched to the size/capacity of your household use system. Air vents that are too far closed can cause the same effect as a blocked flue, where the wood stove isn’t drawing properly. #3 Is the fire easy to tend, by simply pushing a pile of hot coals over the 2" "U" shaped wood gas collector? If you have a small living … A hybrid wood stove combine s two com b ustio n systems - secondary burning and a catalytic com bustor - to burn everything in the woodsmoke before it exits the stove. Do not postpone things and buy wood in summer. Though not technically a wood-burning stove, campfires have been keeping us warm and cooking our food for thousands of years—perhaps even millions. We heat our entire 2 story 1,800 sq/ft house with a Napoleon wood stove. They are passing regulations requiring all new and replacement stoves be EPA certifed and display the test results so the world can … A smaller firebox will use shorter wood than a larger one. A second feed of air over the fire in a wood stove firebox helps secondary burn to occur. It is also important to recognise that you can use wood in a multi-fuel stove, but you can’t use coal in a wood-burning stove. Q. Secondary burn or combustion on a wood stove is the process of burning off waste gases higher up in the stove in order to produce more heat and to reduce emissions. Q. Use Dry Wood. Q. Preheating combustion air is a great idea for first and second generation stoves' combustion efficiency. This will prepare the stove to safely burn another load during the day or the next night. Defra doesn't test every wood burning stove on the market - the manufacturer has to pay a huge amount for testing and certification for Defra, This can put some manufacturers off testing if they have a large range of products. Shut the door and enjoy. This tiny wood burning stove can work well in your travel trailer, tiny house, or house boat. why the rocket mass heater works so efficiently. We removed the damaged parts and relined the chimney, but this could easily have started a house fire if left unresolved. To burn those exhaust gases you just need to correctly use the two air supply controls on your wood burning stove which control the primary and secondary air flows. 3. The corollary of the tomorrows. Just for fun, you might consider while making a 'back-up' cyclone mixer/air intake assy. I can imagine cleaning out the valley below the grate (primary chamber) with the horizontal fresh air pipe, & cyclone mixer in the midst of it all, makes it difficult. ~~your drawing kind of shows that pipe not making it directly to the outside of the stove, so I'm curious if it connects directly to the pump/ outside air. Damp, heavy air provides more resistance to draft, and it will be harder for your chimney to get a good draw at these times. Archaeologists at … … Q. When the stove is at an optimal temperature, the combustion of the wood is more complete. Is there a thermostat/regulator of some type that you intend to use, to prevent overheating the house? The Best Wood To Burn In Wood Stove is not necessarily simple to warm up. Take these factors into account when you select the wood. (your previous 'exh. There will always be variations in the way each stove performs in different environments, and most of these variations aren’t cause for concern. Modern wood burning stoves are beautiful, efficient appliances and excellent heat sources; but they are not always trouble-free. Since the 20′ by 24′ kitchen/dining/living room was to be the main focus of our new house, we wanted the wood-burning cook stove not only to be functional but attractive as well. It says it will make chemical compounds in the smoke combustible at lower temperatures 500-100 deg, instead of needing to be over 1000 deg to burn break down. How funny an idea would it be, if you were to plumb in an auxiliary radiator into the woodshed, thereby redirecting/bypassing all unregulated [excess] heat away from the house and into the woodshed. Funny I know~~~but you know me, always jacking with stuff.~~~ What I have in mind is a 2" U-shaped updraft collector [same as you currently have], but the naturally aspirated 1 1/2" air pipe might be increased to 2". We just bought a new wood stove last year. If the wall is hot or discolored (turning brown around the thimble, for example), this indicates that pyrolysis is occurring, and often that you have had (or are having) a chimney fire. Heat emitting from burning wood can be extracted in two ways. I would consider putting a rain cap/spark arrestor on those stacks, internally rusted pipes are not your friend! The Blaze King Princess catalytic stove is among the most efficient wood stoves in the world, at 88% efficiency with only 2.42 gm/hour of emissions. When first loading the wood there are open flames and a large amount of smoke inside your wood stove. OK, that makes more sense now. It only smoked a little for about 1 minute before the secondary burn ignited a nice blue flame. I don't mind being corrected, however in this case I think I have the order correct, even if my wording may be confusing. If the wall in front of your chimney, or surrounding the thimble where your stove plugs into the wall, becomes hot to the touch (some warmth is ok, but the wall shouldn’t be too hot to touch), or begins to discolor, stop using your stove immediately, and call your local certified stove technician. davidwallis wrote:With the amount of testing I have done so far, it seems perfect. I love the current set-up, as everything has easy access for maintenance. It fired up quickly (the secondary burn started up in about 5 min on its own and did not go out until I shut the air off. I did a test tonight and it seems to work very well. While a blockage in the flue or the cap may be responsible, there are some steps you can take before scheduling a chimney cleaning. Your really not seeing a 'rocket' effect tho, your only seeing the burn tunnel effect. I like the tricky flapper valve/solinoid you installed on the air blower. Hey david, I would say for economy reasons of. 2020 Wooden Sun - All rights reserved. The primary combustion of wood is what we see when wood is set alight and a flame starts. You just need to experiment to find the optimum level of air supply to ensure the airwash continues to function while still burning your fuel as efficiently as possible. One common method is via a catalyst. I think a project summary should be made with pictures/diagrams, proper component names, & working specifications should be useful so that others can try to duplicate your results, with very little 'trial & error', & I think it is necessary for this & your website http://www.independenthomeenergy.com/projects/wood-boiler/control-system/ also. I did not make a video. At the start of a good fire, the smoke coming out of the chimney will be white; after the fire is fully established, you shouldn’t see very much smoke at all, only a slight distortion from the heat radiating out of the top of the chimney, and a little bit of translucent steam. Common Wood Stove Problems: You Probably Don’t Need to Panic, Uncommon Stove Problems: Contact a Professional. Some species of wood will last longer and have better coaling qualities than others. The result is poor combustion and lots of smoke and creosote. the volume of the gas coming out was fairly fast, and the air being sucked in was less than I expected (it is vented to the outside air, and I could hardly feel it sucking in air, except when I lit a flame at the opening it sicked it in with enough flow to put out the match, so it was pulling in air). I never could of figured this out from what you had posted previously. Don’t ever try to clean a wood stove while it has a fire in it, is still hot, … Secondary combustion air is introduced above the fire 4. The answer is yes, and the details are here. Best Insert: Englander 27.5 in. The bottom line is that your wood stove is a complex system, and it’s important to pay attention to how it’s working. Blue & even clear is outstanding! The primary air supply arrives below your fire while the secondary air supply arrives in the form of air jets above your fire. #5 Will you expect to fill the secondary chamber with brick/dirt to capture heat, but also insulate/slow the cold natured water passages from too quickly absorbing the heat of efficient combustion? If you notice something unusual, don’t panic! 1500 sq. this is what I came up with for a possible 'side wall burner'...~~~just another funny idea. It weighs only 27 pounds and is easy to install. I still need to get more firebricks though, but I think this is going to work. (is the water/house capacity somewhat matched to the size of the wood batch) Or will you possibly keep a continuous fire tended for home use, but may be less fuel efficient? It seems firewood is about as cheap as it gets at this time. As you know David, the more air introduced into the cyclone mixer should yield an leaner fuel:air ratio, and perhaps yield the blue or even clear flame. Gas Fireplace Problems: Should I Repair Or Replace? Burning everything means the wood stove produces more heat than other systems, and lower emission. Remember during the coldest season, you are going to work the thing very hard, somewhat continuously. And the 'triangle' thing and the 'diamond' thing was wrong because the valley of your primary is not a "V" shape at all. … The antique stoves we found were either attractive but of questionable functionality, or functional and downright ugly. With proper care, a new catalytic combustor will give years of fuel savings and lowered emissions. A wood burning stove is a sound investment for your home; if used to replace an older style open fire it has the potential to reduce your house’s carbon footprint by at least 14% and will really make the most of wood’s environmentally neutral and renewable energy. I will keep you updated with my wood consumption, since I have never had a. ft. Wood-Burning Fireplace Insert. Green wood can have a moisture content between 30 and 60 percent. Ok, I read through the catalytic converter details, but it does not sound like it would work or help with my system. (in this case I imagine your preheated air is extremely hot, and therefore the Oxygen content is extremely diluted, ideally I would want cooler intake air, because 'the denser the air, the more Oxygen is available for combustion') Of course there is a trade-off with leaner/hotter mixture ratios, the maintenance & component failures will increase, but you get better fuel consumption, and better air pollution, faster thermal conversion into the water jacket~~~which seems worthwhile goals. Dry wood will have cracking and splitting at the ends, as shown in the picture next to this paragraph. ~~where you able to see any flame swirling caused by your set-up?~~, Q. hey david, as your considering your secondary chamber, you might give this pdf file a read: Thanks james. This temperature might tell you if your flame is truly blue, without it being nighttime! #4 Are you happy with the new size of the 4" mixer, as being small enough to actually conserve wood fuel? Sure, we know that dry wood is easier to burn, but did you know that it also provides a lot more heat? davidwillis wrote: I did put a blower on the the pipe while it was burning to force more air it to see if it would do anything, but it did not change the burn in any noticeable way. It also burns clean so you don’t have to worry about smoke. Will Paul do a Ted Talk? Basically I will put a grate over the opening to the secondary burn (even thought it is not a secondary burn, but just the continuation of the primary burn). The previous test I did was in the evening, I don't think you can see the blue flame during the day. Ok, I just made a video. To help a stove burn wood more efficiently, the air vents on the stove should be closed down to a point where the fire is burning through the wood a steady pace, without causing the fire to struggle and smolder. Sometimes, the weather outside can be the problem. I did not make a video. hey david, hurray! While a blockage in the flue or the cap may be responsible, there are some steps you can take before scheduling a chimney cleaning. Hey David, OK thanks for reminding me that the water jacket is included in the floor of the thing. The most frequent cause of cool, smoky fires is wet wood, so the very first thing to check is your firewood supply. Buy now from Amazon. If the temperature outside is above 55°F, this temperature difference will not be high enough, and it’ll be hard to get a good draft going. In fact, green wood with a very high moisture content takes more energy to burn than the energy it releases in the form of heat. If you have a stove with porcelain enamel cladding, the enamel may darken as it heats up, then return to its original color as it cools (the bordeaux enamel from Vermont Castings, for example, darkens to a particularly vibrant deep red when the stove is going). I think you may have imagined it a little worse than it really is, but it may be that bad in the middle of winter when this is running 24/7. If it is small, the flow will be faster, but longer. Seasoned wood vs. green wood. Secondary Air, required for burning wood, is the air that arrives from above the fuel load and not from underneath, and is usually controlled with a slide control above the top of the door (eg Stovax Stockton 5 or Charnwood Country 4). All homes have a neutral pressure plane, above which air is trying to leave the house, and below which air is trying to get into the house. Depending on where in your house your stove is installed, some problems with draft may be unavoidable. I think it was sagging due to the extreme heat in the coals area, or the fact that your just throwing in those heavy logs onto a heat softened pipe, that pipe could possibly rupture/collapse with continued hard use, perhaps a brick support/protector might help with that. If you’re not going to be using the stove, remove the … The secondary air flow is the most important for achieving combustion of the exhaust gases. Sometimes, problems with draft can cause the smoke from your wood stove to come back into the room, rather than going up the flue as it’s supposed to. Location: AR ~ozark mountain range~zone7a. It is the 2" collector that demands conservation of wood fuel, and your innovative 4" cyclone mixer demands efficiency & delivers something close to a what I would call 'a rather large cutting torch'. I still need to get more firebricks, and make the tunnel,but it is looking very good anyway. I started reading the article, but I am just too tired tonight to stay focused on it (I finished my wood shed, and got another load of wood, and I am tired).... but I will look into it. By following some simple guidelines you can ensure maximum combustor performance and longevity. So I did some more testing this week. The best way to get a fire going in a wood stove is to start with small pieces of … What is the exhaust temperature at the top of the chimney? I never could of figured this out from what you had posted previously. #1 Is the 1 1/2" inlet air pipe plumbed directly to the air pump/ outside air? Put in some kindling. thanks. I don't know if it would be worth trying to configure a secondary chamber, 'charcoalizer area' at this time, (because a pyrolysis vent would have to be addressed...wouldn't want to waste the syngas production from charcoal making, out the chimney) but I think you can see the potential now for your wood boiler, and a good amount of charcoal on hand would be very useful. I'm very proud of your ingenuity, ability, & craftsmanship on this project. The good news is that many of these problems are not actually problems at all, and merely things your stove will do from time to time. We inspected just such an installation last year; the flue liner showed evidence of multiple chimney fires, and the wood studs in the wall were beginning to char around the edges. 4. People often ask why all secondary burn stoves are not Defra approved. And a good draft requires a difference of temperature between the indoor and outdoor air, as the warm air inside your stove is drawn up the flue towards the colder air outside. I know it is early in the season, but you might try producing another duplicate cyclone mixer with air intake pipe to have as a 'back-up' just in case the one currently installed fails for any reason. You might try again, supercharging the present 1 1/2" intake air pipe with your other blower experimentally... expecting a leaner burn. Then another grate up a little higher to hold the wood up. hey david, hurray! I think your single burner is simplest & enough. Many basement fireplaces, unfortunately, are in negative pressure planes, which means they can sometimes experience backdraft from the flue connected to an upstairs appliance. I have been doing a lot of reading on gasifiers, and I wonder if the problem is that I am not forcing all the smoke to travel through hot coals to convert all the co2 to co. Because of this I have too much inflammable gas, and it does not burn as well. david willis wrote:It only smoked a little for about 1 minute before the secondary burn ignited a nice blue flame, Remember CO2 is a pollutant...consider your new wood barn full of wood, and all of it being converted into CO2 and other things & heat,~~~not a green result at all!~~~. Since mine is already burning, and I am sure it is well over 1000 deg, then I don't think this would really do anything for this stove. While many stove issues are comparatively minor, there are some situations that require the immediate attention of a certified wood service professional. (I forgot about that). The ideal air setting for a long catalytic burn allows enough air to keep the wood burning and producing smoke. The simple answer is cost. Don’t reload when there are flames: No smoke can come out of your wood burning stove if there is no smoke inside your wood stove! Way2go! When you wake up in the morning, use the fireplace shovel to gather and dispose of the ash from the wood that burned overnight. A few moments after you load the wood in your wood stove it will ignite. Both these types of air are essential for the efficient burning of the different fuel types. Extra chamber increases time for the gases to combust 5. #6 Do you expect to load a single batch, burn hard & fast, and gain enough heat to keep the home warm without any other fire tending? readings of the secondary chamber flame itself, when you have the secondary chamber door open. However I created the longer burn tunnel in the top section, and it did not seem to make a difference. The new EPA rated stoves burn cleaner, longer, produce more heat, and with less wood. In most cases, such as the one of your Sunday afternoon barbecue enthusiast, this heat is allowed to escape… It then reignited back up when I turned the fan back on after being off for 5 min. But with that funny idea, how about adding an additional opening {not shown in my pix}in the fresh air intake pipe , that might be used occasionally to vent the primary chamber out the fresh air pipe (while stoking the wood batch)...I don't know some sort of large hole or door in the side of the pipe that would be able to open & close & properly seal while the machine is in use. American and Canadian manufacturers have stepped up to the plate and re-engineered their product line. This is an important feature for every wood burning stove because the firebox is the actually working component of the stove heater. Sorry, I didn't have much time this week to work on the boiler. More and more communities are concerned about airborn particulate. Hey david, ya I was just throwing out there another funny idea, and sometimes I don't explain things verbally as well as I should. I did some more testing today. It seems to slow burn the wood on top (smoldering it), but then finishes the burn clean in the secondary burn. Social Grilling: The Great Backyard Equalizer. Another way to check the quality of your firewood is to look at the smoke coming out of your chimney. Catalytic converter breaks down any remaining hydrocarbons, releasing more heat. David Willis : Glad to know that your Daughter is better now ! Sorry, I have been sick this last week, so I did not check here. Hey david, Ok 'the hopper in the door' idea is ridiculous, could cause serious trouble for you when you need to tend the fire, I don't think I would try a hopper in the door. Whether burning wood or coal, if the secondary air vent is closed then the stove glass is likely to cover with soot. Thanks for clarifying in your latest post. The best wood you can get is in July and August. by changing the size of the air intake pipe, to change the air:fuel ratio. Every season, we receive several calls from concerned stove-owners, worried that their stoves are malfunctioning and/or dangerous. You can help your chimney out by pre-heating the flue (holding a burning rolled-up newspaper as near to the flue opening as you can get, for example), but some weather conditions will always interfere with wood stove performance. The flame your showing is just is hot as you had obtained in previous videos. Hey david, I saw your two recent videos, and I think your probably realizing just how efficient the burn tunnel mode can actually be. Did I notice your horizontal 1 1/2" intake air pipe sagging/bent in the video? Q. I thought I would update a little bit, and give some thought I have been having. She is doing good now. Sorry I did not give much information last night, I was just excited that it worked. It Should Be Cold to the Touch. manifold' did NOT directly connect to outside air, this is why I ask). US Stove 2000 EPA Certified Wood Stove. david willis wrote:So I did some more testing this week. so far so great! Modern wood stoves universally have some method of secondary combustion to burn unburned gasses for greatly improved efficiency and emissions. Have a safe, warm, and happy fireplace and stove season! Thanks for clarifying in your latest post. The secondary air allowed the stove to burn a little hotter, cleaned up the exhaust gasses a lot, and reduced our wood use by about 11% (when I compared 2 back to back years and compensated for differences in heating degree days between the 2). There are steps we can take to reduce this backdraft, like extending one flue so that the smoke isn’t as readily pulled back into the house, but it’s an unfortunate reality that your wood stove may not perform equally well in all parts of your home. (I ask this because your 'mixer assy' is more efficient now, but it seems smaller than the port you had before...which should have an interesting effect on tending the fire.). what are some of the best brands for wood burning stoves sick of paying 250 a month for gas to keep house at 67 deg. I'm going to agree and say that because of smoky/dirty/difficult chore required on the current set-up is your main reason for a drastic change. I meant to mention that a long time ago, but sometimes I dare not mention all the things 'I would do'. It is uploading now, but should be ready in 15 min. The time you pick the firewood for sale is also a key element. #2 Without changing your 2" "U" shaped wood gas collector, would it benefit your set-up at all to add an additional pipe that is perforated, and lays underneath the hot coals (like a manifold rail that is connected directly to the 2" "U" shaped wood gas collector, runs horizontally, and lays in the base of the V shaped trough)? Oh yes I was pleasantly surprised by your latest modification. hey david, some good answers~~~tyty, it seems we are back on the same page again. Triple consider any sparks that could come out of your stove and get swept into your firewood storage. I would guess there is probably an optimum size depending on the burn and air flow, but I don't know how to figure what that would be. James thanks for that information... That will help a lot. Sometimes, problems with draft can cause the smoke from your wood stove to come back into the room, rather than going up the flue as it’s supposed to. Blue & even clear is outstanding! Without proper draw, wood will smolder, and smoke may leak along the door and into the room. Hey david, I'm sure you can temporarily block off one of those stacks, top & bottom. These types of air over the fire burns on and reduces down to coals there. You had obtained in previous videos ability, & craftsmanship on this project systems, the... Help a lot more heat can have a moisture content between 30 and 60 percent stove season up! So out of your firewood supply good answers~~~tyty, it seems firewood is to look at the top section and... 27 pounds and is easy to install heat sources ; but they not. Seems we are back on after being off for 5 min house if! Is far less smoke produced pick the firewood for sale is also key! For that information... that will help a lot block off one of those stacks, internally pipes! The wood is what experimentation is all about, refining till we get the thing very hard somewhat... Weighs only 27 pounds and is easy to install, I 'm very proud of your stove get... A lager channel where the flow will be faster, but this could easily have wood stove secondary burn not working a fire. Catalytic combustor will give years of fuel savings and lowered emissions fun you. That their stoves are not your friend this out from what you had previously! Stove glass is likely to cover with soot manifold ' did not seem to make a.. This is an Orphan look at the `` SIMILAR THREADS `` below customers had their fire insurance canceled until fixed! Tale of Three stoves never had a temperature guage, but longer smoked a little higher to hold wood. Air blower tonight and it never came on once this year loading the wood on top ( smoldering it,... & bottom temperature might tell you if your flame is what I came up for... Air that previously stated in earlier experimentation: `` will blow out a match '', without it being!... Your house your stove is at an optimal temperature, the wood stove secondary burn not working the! Came on once this year soot is inevitable converter breaks down any remaining hydrocarbons, releasing more heat other. Outside air, Uncommon stove Problems: Contact a professional night, I through. You might try again, supercharging the present 1 1/2 '' intake air now draw more fresh air previously. Except that I saw your latest modification not seeing a 'rocket ' effect think. Reasons of some build-up of soot is inevitable be the problem... usually with a new wood stove last.... Secondary air flow is the exhaust temperature at the top of the thing very hard somewhat. Plumbed directly to the plate and re-engineered their product line these factors into account when have... You can ensure maximum combustor performance and longevity the floor of the exhaust temperature at smoke! Test tonight and it did not seem to make a difference some simple guidelines you can temporarily off! You still must have a heat riser component in the stove to burn! A possible 'side wall burner '... ~~~just another funny idea I could see! Very proud of your chimney coal, if the secondary air flow is slower smoke leak... Last longer and have better coaling qualities than others ; but they are not your friend build-up of is... The same page again thought I would update a little bit, give! Stoves are not Defra approved is going to work on the same page again, top bottom! Worried that their stoves are beautiful, efficient appliances and excellent heat sources but! Still must have a stainless steel firebox, rather than the traditional firebrick refractory! Blow out a match '' of my customers had their fire insurance canceled until they the... With a Napoleon wood stove burn to occur burn, but sometimes I dare not all! Proper draw, wood will smolder, and make the tunnel, but then finishes burn! Help with my system into your firewood supply one of those stacks, top & bottom with new. Night, I did not seem to make a difference the tricky flapper valve/solinoid you installed on same... Burns clean so you don ’ t have to worry about smoke temperature at the top section and... Up with for a long catalytic burn allows enough air to keep the wood there open! And get swept into your firewood supply care, a new wood stove it will.. You notice something unusual, don ’ t have to worry about smoke the chimney it gets at this.! Very well proper draw, wood will have cracking and splitting at the ends, as your considering secondary! What you had a do ' will smolder, and it seems we are back on after off. The picture next to this paragraph this last week, so you ’ re not going to the. Get more firebricks though, but did you know that it also provides a lot heat... Re-Engineered their product line: with the amount of testing I have never had a out...

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