Firing a wood-stove through the night.
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- Опубліковано 27 сер 2024
- Whilst we are not massive fans of over-night burning due to the increased pollution caused, we ran this test just to see how easy it was to achieve as this function is a requirement of the current European 'CE' rating on stoves. It is likely that this standard will be adjusted in the future as more stoves comply with the new 'Eco-Design 2022' standard which will dramatically improve air quality from wood-burners. Check out the results of our test from the Charnwood Island I stove. This stove meets the current 'CE' standard as of 2016 when the film as made but has more recently been updated to the new 'Eco-Design 2022' standard along with most of the other stoves from the Charnwood range.
Everybody now can see why over-nigh burning is wrong. Full load and air intake closed to minimum - wood burns slowly, but cannot burn completely and efficiency is suprisingly low and pollution is high. Wood always has to burn brightly. Fortunately this is high quality stove and has always open "clean burning" canal - otherwise there would by a risk of explosion of gases from the wood. This stove should always have clean glass - if it's dirty you do it wrong (or wood is wet). Anyway Charnwood is a great burner :)
Couldn't agree with you more! Thanks for commenting. :)
Nice big stove! I have learnt that if you lay the logs 'across the stove bed' on 'east-west' they burn longer. laying them north - south let's the air flow faster so burn quicker
Hi Jay. Thanks. Funny enough, the stove is quite modest in size (only 5KW nominal and 7KW max). Perhaps it looks bigger on screen! ;) I have never thought about the log positioning theory. I just pop the wood in as best it fits! Cheers. Julian
That stove is so tiny and cute!
Very nice stove👍👍
Excellent
Nice stove
The cold weather affects me adversely since I underwent a complete thyroidectomy - so the Charnwood stove would be a real boon and greatly beneficial!!!! (I would also put soup to cook on top on the wood burning stove! )
Hi Lois. Stay warm!
Love that stove
Sorry Gary. Missed your comment. Check out our video on youtube. Details on our website under 'videos'. www.islandfires.co.za
That's a great looking burner ,nice size .
Nice little fire.
Thanks Anne. It is the Charnwood "Island 1" - www.charnwood.com
OK - you choke down the air intake and you get a slow burn. Does the chimney smoke when you do that? and if so is that normal? I hear that a smoking chimney denotes an incomplete burn, but I can only get that to happen with the air intake fully open. Your thoughts?
Hi Richard. You are spot on! You cant get super-efficient burns on an 'over-night' burn test. It is basically a trade-off.
Restricting the air inhibits combustion which lengthens your burn time but produces more particulates - which is why the glass is black in the video after the over-night burn.
A study at Princeton US in 2000 which compared the emissions of an open fire and closed stove found that the stove produced 77% LESS particulates and smoke during 'slumber' than a 'slumbering' open fire. However, this has to be weighed up against the fact that an open fire will die much quicker than a stove in slumber mode so your reduced particulates are emitted for a longer period.
For me, in our climate (Cape Town), I prefer to maximize my fuel efficiency by burning normally during the evening and, if I want a bit of extra heat during the night, loading up before bed and allowing the stove to continue at a reduced but not fully 'slumbered' mode (perhaps up to 5 hours of burn. This way, I get the best from my fuel, burn cleaner and still have a relatively warm room in the morning. Re-lighting the fire is not too much trouble for me compared to 're-establishing' the fire.
However, one thing the test does demonstrate for me is the control and design quality of a stove. Many stoves are sold with a high efficiency rating and 'CE' badge but cannot achieve this test which demonstrates that they are not giving the user the control over the air supply and the insulation on the firebox required to achieve the claims stated by the manufacturers.
I find this mainly with products from the Far East where it is impossible to achieve anything close to an over-night burn (I have tested one).
Hope this helps and thanks for showing interest.
Kind regards
Julian
+Island Fires Hi, thanks so much for clearing that up. My buddy and I have been going around and around on this issue of smoke on a slow burn in the slumber mode.I was worried that there were gases from an incomplete burn going up my chimney and wondered about that issue. I think that the type of wood used affects the burn time. Oak, being my first choice, closely followed by beach and then ash, and I have also burned hemlock if dry. I thank you again from the Catskills Mts of NY. Rich
Yes sir, the key is, leading up this, you are prepping the bed of coals to blue-hot, just before bed. Then when you add the night logs, they will burn pretty efficiently for a while. But you do have to choke it down overnight.
I live in the High Rockies of Colorado, and only have pine, some aspen and cottonwood to burn, but if I mind the fire properly and get the coal bed hot enough to last the night, I can keep it going in the winter for weeks (and do).
He’s doing it all wrong. Before your last load burn on high for a little bit. Put new wood it. Burn on high for 5-10 minutes or until the wood catches on fire. Damper all the way down. If you put new wood in and damper down you will have black smoke coming out the chimney for hours
I like your wood stove what brand is it? And where did you buy it?
Hi Thomas. Apologies for missing your comment. All the stoves featured on our channel are made by Charnwood in the UK. We are the distributors in South Africa so if you are over here. we can assist. However, Charnwood have distribution throughout Europe, North America, Australia and Japan. You can contact them at www.charnwood.com. :)
where do you need a log burner in south africa???? also whats from 0-100 what % do you need your vents open to do a long burn that is like not going to smoulder and blacken the glass and flue? my burner is getting installed on sat (in UK) and I cant wait
Hi there! Thanks for your comment. Believe it or not, we get winter weather well below 'zero' and even snow in certain places! Additionally, our houses (particularly older ones) are primarily built to keep us cool in summer but not warm in winter. These two factors make wood-burners very popular here. In answer to your question about slow-burns, there is no perfect way (presently) to extend the burn for very long periods without dramatically decreasing the efficiency of the burn and blackening the glass. I, personally, have manged to keep clean glass on an extended burn of around 3-5 hours (whilst out for the evening) but never over-night. The Charnwood range of stoves have a specific vent setting for overnight burns (as per video). Long burns without black glass I find are achievable when I close my vent system down to just before this setting. Charnwood do not have multiple vent controls so finding the 'sweet-spot' is quite easy through experimentation. Every stove is different and your chimney 'draw' will also be different so I recommend a few 'experiments' with good dry wood (damp wood will blacken your glass every time regardless of length of burn). Hope this helps!
Charnwood South Africa thanks very much for taking the time to explain that, very useful information!!
I can't help but question the minimal space from the stove to what appears to be a gyproc wall without any fireproof break. If correct that would not pass in Canada and home insurance would be void.
Hi S M. Thanks for your comment. We are pleased to confirm that this is a solid brick wall with cement plaster and paint. We agree regarding the proximity of flammables although there are regrettably no laws on this yet down here in South Africa. Good news is that Charnwood stoves also come with an optional rear heat shield (also available on the sides) which reduces our recommended 500mm distance to combustibles to 250mm or less dependent on the stove in question. This has been tested in the UK (where the stoves are manufactured). Thanks again for getting in touch and stay warm up their in the North!
Heck yeah! Thanks for the write-up! 🙂🌎✨
And that's how the "all night burn" in a wood stove is done!!! Big bed of coals, large sticks of wood (or one big "night log"), close the heater up & cut the draft down.
was there coal? i just seen wood. maybe mistaken.
How did you light your wood stove
Hi Guy. This was filmed a few years back so not easy to recall. These days, we use "top down" method and Bio-Ethanol reusable firelighters.
You got a Charnwood island 2?
Hi there Y45EEN. This video was shot with the previous version of the Island 1. :)
No need for gloves. Fire is hot, and can burn skin. Wood can give you slivers. I would suggest gloves.
Thanks Steven. Good point. The stove featured does come with gloves and we recommend using them for the reasons you mention. It also means one can take one's time in loading wood into the firebox is good for avoiding damage to the internal firebricks as a result of 'throwing' wood in due to the heat.
What will be the cost of stove India
Hi Mohan. So sorry we did not respond sooner! Your comment was not notified to us. Are you looking for a supplier in India?
Door hinges need oiling 🤣
What is the fan used for..??
Gary Brookstein helps to circulate the warm air around the room.
Gary Brookstein air fan is used to direct heat into areas that normally may take time to become warm quickly enough. For example, you may have a staircase in the room which will take the heat straight upstairs, when you would prefer downstairs to heat up first
Please island II or III thank's
Hi Pascal. Please visit www.charnwood.com to find your local distributor globally. We are in South Africa.
OK thank's
Is this a stove...FOR ANTS?!
XD! Great Zoolander reference!! All we can say is, it was a small room.
PLEASE PLEASE PLEASE CLEAN THE DAMN GLASS. IT CANT BE THAT HARD!!!!! good video.
Erick Wardwell 😂 The glass cleans itself after the next couple of burns Erick but thanks for the tip and well said!!