How To Boost log burner-wood stove efficiency Improve Smokeless Gasification Secondary Combustion

  Рет қаралды 172,208

Andrew K Fletcher

Andrew K Fletcher

8 жыл бұрын

Part 1 of 2 My old log burner / Boiler has been Improved beyond all expectations to match the efficiency of modern stoves! It cost less than £60 to bring this boilers performance up to match most new stoves with secondary combustion.
Part 2: • Log Burner Stove Upgra...
Many older Log burners were built to last a lifetime. These are being replaced because they are inefficient and emit too much smoke.
Before you throw out your old log burner, watch how I improved the efficiency and combustion in an old Franko Belge Lorraine multifuel stove from being one of the most inefficient to one of the most efficient burners and achieved by installing two very simple modifications, which with a little thought can be adapted to most of these old faithful legends.
Before the modifications, our chimney used to collect creosote and required regular cleaning to remove it. Now that same creosote is burned in the fire box along with free timber collected during the year.
In fact, Leylandii, which would normally blacken the glass and cote the inside of the log burner with thick black tar like creosote residues now burns as cleanly as any other wood.
We have plenty of free hot water and our home is heated burning scrap wood, mostly pine and if we are lucky some hard woods.
One problem, is that if coal is added it get's very hot, even with all radiators on and hot water tank, well over 400 degrees c Even to the point where it was kettling the water and we had to leave fire doors open to let heat out. So moderation when using coal and also clean stainless perforated tube with brush each day, to keep holes free of ash.
Our gas bill for the winter quarter is now a staggering £15.00 Yes you read that right. By opting for a non-standing charge tariff we have not only virtually eliminated our heating bill, but we now have an almost smoke free combustion in our wood burner.
No more creosote and less chimney sweeping.
Check out my research on inclinedbedtherapy.com to improve your health and fitness for free.

Пікірлер: 75
@zeroquanta6130
@zeroquanta6130 7 жыл бұрын
BLOODY Brilliant!!!!!! First part of video, I thought "WOW, if he could get some extra AIR in that tube, that would be great. AND, YOU DID IT!!!!!!!!!!!!!!!!!! I am going to make one for mine. I have the same problem. PINE needs a LOT more air!!!! Fist up, Fight for Truth.
@AndrewKFletcher
@AndrewKFletcher 7 жыл бұрын
Thanks for your comment, made me smile :) Please come back and share your results.
@putheflamesou
@putheflamesou 7 жыл бұрын
Thank you for sharing.....Mark Twain, "Why can't countries share technologies". We need to get back to the fire!
@victoryfirst2878
@victoryfirst2878 6 ай бұрын
I just got most of the plumbing pipes. I got stainless steel pipe with extra heavy wall for longevity in the firebox. Would you be so kind fella and tell me how well the pipes have survived in the fire ?? Thank you so much for your knowledge of the subject matter Sir. Peace too. @@AndrewKFletcher
@victoryfirst2878
@victoryfirst2878 9 ай бұрын
Hello Andrew, I ran across your channel by accident. What a pleasant surprise Sir. I will be working on my wood stove to increase efficiency. Your views are making me take notice Sir.
@AndrewKFletcher
@AndrewKFletcher 8 жыл бұрын
Since the latest modification with extended drilled stainless steel tube as suggested by Gardenweld, the infra red thermometer has recorded temperatures off the scale of 400 degrees Centigrade. The fire was so hot it caused the water to kettle inside because the water pump was not running fast enough. Have now increased speed of pump and it has cooled the fire down better and boosted the radiator and hot water supply.
@frankfieldfrankfield6230
@frankfieldfrankfield6230 6 жыл бұрын
Good job, thanks for sharing your improvement made. The most interesting thing is that it is not necessary to build a new furnace. You explained very clarly how to perform the outside air intake for secondart combustion. You mus be a technician school's teacher, really!
@mp180170
@mp180170 3 жыл бұрын
Wow it’s so nice to listen to a gentlemen talking sense liked and subbed straight away thank you my friend 👌🏼
@cawneyhawme7141
@cawneyhawme7141 3 жыл бұрын
Thank you, I have been looking to improve my fireplace and I think this will be helpful. Would you improve your house maintaining heat if you hooked the air intake valve directly to the outdoors? Another video I was watching had a pipe that did that from behind the fireplace. The folks said since it wasn't pulling the air from the room and they didn't have the problems of drafts since the heat made a kind of bubble.
@MartinA-kp8xg
@MartinA-kp8xg 4 жыл бұрын
Same principle as a gas lamp filimant. Stabliize the heat in the area of combustion even better by adding air. Like it.
@APOKOLYPES
@APOKOLYPES 6 жыл бұрын
thank you for sharing good sir!
@AndrewKFletcher
@AndrewKFletcher 8 жыл бұрын
Chimney swept only once this winter, producing white soot as opposed to black soot, with zero creosote. This means there is zero chance of ever having a chimney fire. The chimney would normally have been swept 3-4 times a year and produced a bucket of black soot each time, which indicates unburned carbon. Very excited also about latest modification to the secondary air supply, thanks to a comment and suggestion from Gardenweld kzfaq.info/get/bejne/beBjhMmptKmqZX0.html
@AndrewKFletcher
@AndrewKFletcher 8 жыл бұрын
Infra red thermometer shows fire running as high as 300c inside the firebox but generally around 250c. This is with radiators and hot water tank hot. Radiators are around 56c Water tank shuts off via a valve at 60c diverting heated water to radiators.
@verybigmito
@verybigmito 3 жыл бұрын
Thank you for sharing
@jasoncreed6396
@jasoncreed6396 Жыл бұрын
Well thats just lovely thank you ill try this also
@joebourgoin6554
@joebourgoin6554 3 жыл бұрын
Awesome, maybe the secondary burn would work even better with a tube that goes the whole length of the fire box with small holes spread out evenly so you get fresh oxygen along the whole width instead of just in the center
@classicsteve6836
@classicsteve6836 2 жыл бұрын
That's what I was thinking. If he put a T at the end with two capped off tubes with holes drilled it would improve the secondary burn by spreading it evenly.
@homayounshirazi9550
@homayounshirazi9550 6 жыл бұрын
Andrew, The perforated stainless steel helps the efficiency of a burner in two ways, I think. By increasing the surface area of the heated elements inside the stove those perforated tubes act as a sort of catalytic converter. Hence they improve efficiency. I wonder how efficient the stove would be if the stainless steel tubes were thinner and the secondary supply of air was delivering more hot air for a more complete combustion!
@AndrewKFletcher
@AndrewKFletcher 6 жыл бұрын
The idea of the perforated tube was to slow down exhaust gas and soot particles to increase the heat in the fire, which caused the wood to produce gas, which was burned inside and outside of the tube. Cold air was introduced at the top to induce secondary combustion of the smoke and gas. Yes I agree we have increased the surface area and that tube get's very hot indeed, effectively converting what would normally go up the chimney into heat. I guess it is akin to a catalytic converter, but the idea was more to create a mixture of gas and air, thinking along the lines of a carburettor, as mentioned in a previous comment by a viewer.
@frankmills5284
@frankmills5284 Жыл бұрын
Would using several of the stainless steel pipes increase the efficiency? I was thinking a couple smaller diameter stainless steel tubes.
@AndrewKFletcher
@AndrewKFletcher 8 жыл бұрын
Have ordered an infra-red thermometer to measure temperature of stove with and without conversions us8ing same amount of fuel to see how quickly it warms up and how hot it gets with the same number of radiators etc, and how long the fuel lasts by comparison. Should be interesting
@rizwanfirdous1690
@rizwanfirdous1690 6 жыл бұрын
Hello can you give me degsine of this stove . I want to built the same But in ss. Plz give me your e mail on recharge300@gmail.com. Regards Rizwan
@mervynshute880
@mervynshute880 4 жыл бұрын
how big are the holes and the spacings of them, please.
@daleval2182
@daleval2182 4 жыл бұрын
I like you have taken this on, if you had a deflection shield at top of flame and back of stove ,that shield 70 % of upper box , brick fire bricks on floor, and on lower sides, then your air intake , you should achieve full gasification
@AndrewKFletcher
@AndrewKFletcher 4 жыл бұрын
This stove does have a stainless heat deflection shield as standard :)
@daleval2182
@daleval2182 4 жыл бұрын
@@AndrewKFletcher oh I see that's great Andrew. I live in Nova Scotia bought a hobby farm by a big Lake, to retire left Ontario too crazy there, I bought an Elmira stove, used but like new , it's an air tight , but no shield and no secondary , I plan to add those next spring, work ok as is , but I like the re burner effect, will use fire bricks over flame, then a U shape stainless tube with holes and a ball valve as you did, to throttle , you inspired me
@pernellkatchp66
@pernellkatchp66 6 жыл бұрын
On the Avasva you can count on professional help with problems and technical support.
@littlejoeypeakdistrict7546
@littlejoeypeakdistrict7546 7 жыл бұрын
Theres nowt wrong with having a good play youve done a good job there
@AndrewKFletcher
@AndrewKFletcher 7 жыл бұрын
Thanks Joe, we can now burn scrap wood from building sites and pallets without having to constantly feed the fire as we used to. Big differences. One problem, is that if coal is added it get's very hot, even with all radiators on and hot water tank, well over 400 degrees c Even to the point where it was kettling the water and we had to leave fire doors open to let heat out. So moderation when using coal and also clean stainless perforated tube with brush each day, to keep holes free of ash.
@nickvandike88
@nickvandike88 7 жыл бұрын
good job! thanks for the video! I've been concerning doing this to my Franklin stove. among other things. maybe converting into a waste oil stove aswell. thanks again
@fishhuntadventure
@fishhuntadventure Жыл бұрын
Imho there’s much better ways of extraction of heat from waste oil both in efficiency and emmisions. With very little solar a ‘diesel heater’ can be powered without draft concerns, and 5% kero would cut it adequately. Alternatively, 25% off-road diesel or heating fuel could aid thick waste oil mixtures. A woodstove is designed for wide fire with draft, not unpressurized oil burning. It will work, sure, but for what gain? A heater designed for burning liquid will be a better choice and no condensate in the chimney
@versatec1
@versatec1 6 жыл бұрын
Hi - does the perforated tube act as a sort of carburettor for the wood gas? 😊👍
@AndrewKFletcher
@AndrewKFletcher 6 жыл бұрын
That was my reasoning to install it, to mix air with the gasses to create secondary combustion and reduce emissions. It also slows down the rate of combustion, by retaining more of the gasses in the top of the fire, where the stainless steel air inlet pipe delivers more oxygen to burn the gasses. The fire get's a lot hotter than before and yet it has reduced our fuel requirements by around 50% This can only be due to gasification of the logs. The fire before this used to roar up the chimney and burning scrap softwoods was very time consuming as no glowing embers would remain to keep the fire going. Today, even softwoods can deliver plenty of heat and at a much-reduced burn rate, leaving glowing embers. The confirmation came when I swept the chimney to find the soot was predominantly white, where it was black before the modification. Spark plugs for example, go black when the fuel to air mixture is too rich. They go white when the engine is running lean.
@gdglock
@gdglock 2 жыл бұрын
Curious as to what the purpose of the directional antenna on your chimney. Judging by the size I would think for cell service.
@fishhuntadventure
@fishhuntadventure Жыл бұрын
Of course it’s for cellular or wireless internet. Although one ‘can’ use that modified yagi for digital tv I suspect that - due to lifestyle quality observations- television isn’t high on his priorities.
@mlangfordcamper
@mlangfordcamper 6 жыл бұрын
where is that old claw hammer?
@ksshyamnath6183
@ksshyamnath6183 5 жыл бұрын
What does that porous steel tube do to the assembly ?
@AndrewKFletcher
@AndrewKFletcher 5 жыл бұрын
It draws in the smoke, where air is introduced, this causes the gasses to be burned more efficiently. It also slows down the escape of the smoke to the flue so that more heat is transferred to the back boiler.
@joseparada4430
@joseparada4430 3 жыл бұрын
A couple of drawings would be very much thanked by all not native speakers. Appreciated.
@alphasiera1757
@alphasiera1757 6 жыл бұрын
Where is the air coming from? Where did you put the mesh? Does it have a valve? Sorry I cant understand ur accent, im not a native english speaker :(
@rogerbuoy8418
@rogerbuoy8418 4 жыл бұрын
Surely 50% less fuel for the same result is equal to 100% better efficiency. ie, twice as good?
@thepoultrypeople
@thepoultrypeople 8 жыл бұрын
have you got this installed then underneath or instead of the baffle plate? stainless steel necessary? what about a scaff bar drilled out? thank you for sharing, ill be looking at having an experiment this week!
@AndrewKFletcher
@AndrewKFletcher 8 жыл бұрын
+thepoultrypeople Stainless steel was a preference so as not to have to replace it, but yes a normal drilled tube would suffice too. A scaffold bar would be too heavy me thinks, even when drilled out. These exhaust repair tubes are inexpensive in Stainless. The baffle / throat plate was removed.. Ebay item number: 251257685817 enter this a search term. Ask the seller to cut tubing to your spec and adjust price for postage and effort :) Description: 12" LONG T304 STAINLESS STEEL PERFORATED TUBING Perfect for exhausts, and many more applications We only use high grade T304 stainless steel to ensure that you get a product that lasts, and less susceptible to rust or flake. Specifications: Length: 12" inches / 300mm Outer Diameter: 3" / 76mm Perforated Holes: Approx 2mm
@gardenweld
@gardenweld 8 жыл бұрын
Hi, Can / Will you show in another video the fire running with the primary air closed and then open, showing the difference as the flame slows down. Thank you Andrew K Fletcher
@AndrewKFletcher
@AndrewKFletcher 8 жыл бұрын
+gardenweld Primary air, do you mean the air vent at the back of the fire? This is kept fully opened now to introduce as much air as possible to the burn. Closing it causes glass to blacken more than usual, indicating more air is needed to burn the gasses and carbon recirculating in the fire. One important change is that despite burning mostly leylandi, which is heavy in creosote and used to create carbon deposits in the chimney and around the top opening of the chimney, this no longer happens. In fact, I have not had to sweep the chimney once this winter, when normally it would have been swept 3-4 times and chunky deposits would be present with the soot. I have checked the temperature of the fire with the infra-red thermometer gun and it is as high as 280 C inside the fire box and this is with radiators and hot water working on full.
@gardenweld
@gardenweld 8 жыл бұрын
+Andrew K Fletcher Hi, Im loving this video, and if I may.. To help you further your project.. I manufacture log/wood burners, fire pits of all types for a living. I would like to believe that I know what Im talking about, My advice is based on that fact, ( im only trying to help).. Here goes, To achieve *Secondary burn* 1, You need a good amount of heat in your stove and good coals. 2, *The secondary air* you are looking for will only work *well* if you burn *Dry Wood*. Burning wet unseasoned wood will build up tar and acid in your firebox. To achieve the *secondary burn* you will need *secondary Air*. The second part of this video where you add the stainless pipe is almost there. If I may suggest you add a stainless steel tee and more pipe with 8mm holes drilled every 13mm extending out to the edges of your firebox cap the ends off., 2, when you close down the *Primary Air* ..The hot flue from your stove will pull *Pre Heated Air* from this stainless pipe relighting the smoke and un-burned gasses. Giving you a very slow burn and a spectacular dancing Gas like flame, you can open the *Primarary Air* to liven up/balance the burn rate. If i can help you in any way give me a shout: *Gardenweld Shropshire*.
@AndrewKFletcher
@AndrewKFletcher 8 жыл бұрын
Thanks for your comment. Have pondered introducing more stainless steel pipe to distribute the air to the sides of the fire box. As you say, end caps and 8mm holes is a good idea. My logic was that the perforated tube would draw in the air and gasses, and it does, but there is always more room for improvements. I will order a T junction and two more threaded stainless tubes with end caps added but to be honest, the stove is already performing beyond all expectations and the wood supply seems inexhaustible compared to previous winters.
@AndrewKFletcher
@AndrewKFletcher 8 жыл бұрын
+Andrew K Fletcher Thinking about it, all I need is to extend the pipe to the opposite side rather than have a T junction and two additional pipes and cap the end off. Then drill the existing tube and the new one.
@AndrewKFletcher
@AndrewKFletcher 8 жыл бұрын
+gardenweld one 3/4" stainless steel socket, one 6 inch threaded pipe and an end cap ordered from china via Ebay £5.60 inc postage :)
@sandysandaver5412
@sandysandaver5412 7 жыл бұрын
Interesting and well thought through, but, why burn softwood except to start a fire? Wood stoves thrive on well seasoned hardwoods cut and split.
@AndrewKFletcher
@AndrewKFletcher 7 жыл бұрын
I agree that hard woods seasoned are the way to go. But I like the idea of using scrap wood more efficiently. Besides, it is delivered to my drive for free, all I have to do is saw it and stack it.
@sandysandaver5412
@sandysandaver5412 7 жыл бұрын
Fair play. I understand. Can you recommend a good accurate infra red thermometer that's good for reading wood stoves, but, does not cost too much please?
@AndrewKFletcher
@AndrewKFletcher 7 жыл бұрын
Inexpensive from China, available on Ebay. Opt for one that goes up to around 600 degrees C Mine goes up to 400 not enough :)
@sandysandaver5412
@sandysandaver5412 7 жыл бұрын
Thank you. The 400C will be fine as I have a Nestor Martin, Harmony 13 stove and it only needs to run at 230- 400F and is pretty clean burning by design.
@Ihaveausernametoo
@Ihaveausernametoo 6 жыл бұрын
Many places in the world have pretty much zero hardwoods available.
@fred-san
@fred-san 7 жыл бұрын
You can improve a bit, It is the cold air which pushes the hot gases, and not the gases which suck cold air, Therefore as cold air is at ground level, hot air rising, Extend the tube to the floor before the faucet. Can be the site nrjrealiste, A.V.E.C. vortex (sorry, I am french), And make one with a can for example, to put it after the stove in the tube of chimney. 12 blades must be ok It works for petrol engine gasoline without turbo, And also exhaust (with or without turbo) .
@JeffMoorfoot
@JeffMoorfoot 5 жыл бұрын
Where can I get one of those fire brushes I can use as a hammer?
@AndrewKFletcher
@AndrewKFletcher 5 жыл бұрын
The brush type used is a coconut bristle
@TheChsmith
@TheChsmith 5 жыл бұрын
Mr Fletcher, Thank you for the video, I have an old stove I am going to modify as you suggest, but I have one question. What is the rod on the perforated tube for? It only pulls it an inch. Does it make that much difference if it remains in one place? Again thank you from Colorado, USA
@AndrewKFletcher
@AndrewKFletcher 5 жыл бұрын
The rod is useful to allow the gasses to escape before you open the door to refuel. It pulls the perforated tube to open the chimney. The perforated tube recycles the gasses to be burned at the top of the fire, with the introduction of air from the stainless tube that runs across the top of the fire. Thanks for getting in touch
@AndrewKFletcher
@AndrewKFletcher 5 жыл бұрын
An alternative might be to drill a hole from either side to make a cam that when you turn it, it pulls the tube back and forward.
@chuckcassel5417
@chuckcassel5417 6 жыл бұрын
Anyone else notice what looks like a piece of spalted maple. I know I could turn that into something.! Pun intended
@danielberon8390
@danielberon8390 3 жыл бұрын
In spain please
@lazycarper7925
@lazycarper7925 3 жыл бұрын
theres a hotdog on your fire
@waitersluvhjy66
@waitersluvhjy66 7 жыл бұрын
It's simple, Just go to WoodPrix page - and enter the Eco World.
@johansenkap
@johansenkap 2 жыл бұрын
Might have been a very informational if for three things: very poor audio, dark imagery and long needless video of a fire burning. Try again another time.
@markkoons7488
@markkoons7488 2 жыл бұрын
No doubt you have knowledge worth sharing but the so-called production values reek so at 10:00 I'm giving this video a thumbs down.
@rexgeorg7324
@rexgeorg7324 3 жыл бұрын
let's get away from burning if we can guys oxygen levels must be get low throughout the world Great Idea Andrew
@tryduck6993
@tryduck6993 7 жыл бұрын
A lot of 50% 's going on there.. I think your really looking at maybe 20%ish but you know DIY's they love to claim this and that without really knowing the real values!
@AndrewKFletcher
@AndrewKFletcher 7 жыл бұрын
4 rows of logs, now down to 2 rows of logs for a winter and burning soft woods slowly :)
@aidanbolger2358
@aidanbolger2358 3 жыл бұрын
This could be a 5 min video? Such a waste of time!
How Wood Gasification Works - Heatmaster SS G-Series
2:56
Heatmaster ss
Рет қаралды 305 М.
ПООСТЕРЕГИСЬ🙊🙊🙊
00:39
Chapitosiki
Рет қаралды 17 МЛН
КАРМАНЧИК 2 СЕЗОН 6 СЕРИЯ
21:57
Inter Production
Рет қаралды 479 М.
Wood Stove Secondary Burner - Part 2 - Come on Baby Light My Fire!
6:26
Bigelow Brook Farm (Web4Deb)
Рет қаралды 279 М.
Secondary Burn Installation - Combustion Fire
2:02
Dan Farmer
Рет қаралды 79 М.
Advanced Woodstove Technology
3:31
cleanairforall
Рет қаралды 406 М.
MAXimize your wood heat - Low/no cost tips for much more warmth
9:37
EdibleAcres
Рет қаралды 3,1 МЛН
Are High Efficiency Wood Stoves Worth It?
15:05
SSLFamilyDad
Рет қаралды 107 М.
catalytic to secondary air conversion englander 24-ACD
2:49
john reich
Рет қаралды 68 М.
Catalytic Wood Stove Burn Time Vs NonCatalytic
15:31
post 10 Vlogs And Extras
Рет қаралды 31 М.
Forging a cool BBQ Fork
1:00
Rust Legion
Рет қаралды 29 МЛН
会变色的西施龙凤凤鸣壶#凤鸣壶 #西施壶
0:52
壶棚杯友
Рет қаралды 30 МЛН
Vous préférez quand je ferme mon clapet c’est ça! 😠😂
1:01
Hack de Vie
Рет қаралды 12 МЛН