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- เผยแพร่เมื่อ 22 มี.ค. 2016
- The video “More heat with less wood” was launched during the 38th joint ECE/FAO Working Party on Forest Statistics, Economics and Management to promote energy efficiency and wood energy.
Making a fire is easy, but making efficient use of wood energy at home is everything else but easy! The affected sectors of development work for the use of wood for heating and cooking are diverse- thermal insulation of housing, heating technology, consumer health and behavioural aspects of wood use along with ensuring a minimum quality of the natural resource wood, to name just a few. In fact, to foster sustainable development in this field is a complex task that can best be achieved by cross-sectorial efforts.
Click here for the Albanian version of the video:
bit.ly/29GsdrC
Click here for the Georgian version of the video:
bit.ly/2c34inF
Click here for the Turkish version of the video:
bit.ly/29e7ppl
Click here for the Polish version of the video:
• Więcej ciepła za mniej...
Read more about wood energy: www.unece.org/forests/wood-ene...
UNECE Forestry and Timber section: www.unece.org/forests/welcome....
I'm old. I remember Qucume (gramma) giving me shit playing around the wood fired enormous cast iron cook stove. The wood was stored in a cubby behind the stove and out of the way. A perfect place to explore and chill. I was raised English but I can still remember remember her screaming at me in Cree and my mother. If I dared touch the side of the stove would mean 3rd degee burns but as a smart 3 year old, I knew better.
Great vid, thanks for sharing!!!
excelente,practico y muy eficiente.Thanks.
excellent. Many pieces on wood stoves and this one fills in valuable gaps.
Anyone know where to buy an efficient stove like the one they mentioned for a cabin? 90% efficiency sounds cool
Great video love solid fuel heating
Preach it, brother!
it would be helpful to say something about what options there are for efficient fireplaces or go into a little more depth on the Russian (?) fireplace in your vid. How bout something on chimney heat extractors?
Is someone building wood stoves of this design? Or are the designs open source by chance?
Rocket Stove > modern wood burners
well built rocket stove system with large heatsink uses 10x less wood then modern wood burner to heat the same house.
So a rocket stove is 10x more efficient than a wood gasifier stove with an efficiency off 95% xD that makes sense
You need to understand how the industries calculate the traditional wood stove efficiency, its basically not honest, I cant remember exactly how they do it but if you google vs rocket stove it you should be able to find out easily, Think about for a moment, for it to be 100% in science which just means 100% energy transfer, the traditional wood stove chimney output exhaust temp should be the same as input temp which is about room temperature, that is not the case, the exhaust temp is im guessing about 150-400 degree C. From memory Rocket Stove some people got less then 100c for the supper efficient type, that is less the boiling water. the Riser chamber burns around 1500c which is enough to melt mild steel, there is no smoke and leaves extremely little soot, the higher temp that its able to achieve and long burn chamber burns all the gas and soot its part of the efficiency design, there is water vapor coming out of the chimney tho, and you cant really smell smoke, before he heat leaves the chimney its ducted through a very long distance where the heat can be transferred out, they can even duct it downwards on the floor below the burner (that is not possible in traditional stove). just watch a few youtube rockets stove vids and u will understand more
Leon Cryp Rocket mass heater even better in my honest opinion. 2 days of heat on a 2 hour burn.
My stove get the wood gas temperature down to 80 c° could go lower but that would make condensed water and ruined the stove.
But yes at rocket stove is great. But not better than a modern stove. Don't know how it is in you country. But here ind Denmark the are strict rules. You can't put a rocket stove Ind your house. It has to be certified and tested. If it's a main heat source it has to be over 90% efficiency. My stove is rated at 96. Something
3 words.... Rocket Mass Heaters.
A masonry heater works as well. Re-burner is necessary to get higher efficiency. Re-burner in combination with catalytic combustor will lower emissions even further with additional expense.
If one wants to save space. Heat storage in water takes up less space.
Micro CHP systems are even better in cold climates since you end up using the same energy twice by using electricity inside. Just like waste heat can be recovered from wastewater :)
Solar thermal heating and heat pump systems ain't bad either.
Okay, "BTUs per lb" goes up as you dry the wood; almost doubles. But the wood gets LIGHTER as it dries. (So fewer total pounds of wood.) What about "BTU per volume?" If you have a cord of green wood, how much does BTU go up as it dries? (It won't be double.)
Well the energy needed to dry the wood has happened before burning it so you can use the sun and wind to do that or you can burn more wood to do it. I heat with wood and I would say that volume is the better measurement then mass because some woods will weigh far less when they are dry but the amount of heat that you can get is far far greater then.
It is volume of wood not weight, also wood schrinks when drying but not that much as weight of it.
@@tomkelly8827 Good response. Plus, you won't have a chimney 🔥 because you have massive creosote buildup. If your wood is not properly dry, at least make certain to never damper down, but give it full air supply until the moisture is cooked out of the wood. At that point, when you open the stove door, you will no longer hear the hissing sound of water vapor escaping from the ends of the wood😊
btu/l
Volume doesn't matter. Its just water. New cut wood has like 40 50 percent of water. So that you refer is water. Yeah water. Why would you want to burn water?
6KG of dried seasoned oak will heat a an average room burned in an iron wood stove from 4C to 20C in 2 hours. While wet wood will need around 10KG to do so and longer than 2 hours. Also more creosote build up in chimney. Your fire efficiency will be lower, zero secondary burns too.. Dry wood burns clean gives more heat. 700KG dried wood is better than 1000KG wet wood. Way better. Never burn wet it's just stupid.
but pump hot steam into burning charcoal, it would burn in better effect.
Hardwoods like oak take more than a year to dry. At least 2, ideally 3.
rocket mass heaters
Pretty sure a simple rocket mass heater isn't as efficient as a high tech wood gasifier stove is. Plus it can control the combustion so you don't make more heat than you need to fast
Let's start making stoves with more stainless steel in them because they last longer
I love wood for heating! I heat the while house with it by central heating wood boiler!
Hier kann man ungefähr abschätzen auf welchem Wissensstand der Filmemacher seine Zuschauer einschätzt.
Meiner 4 Jährigen Tochter hat das Video gefallen und sie hat alles verstanden 🙂
Ganz schön überhebliche Aussage.
@@wischmopps293 Die Wahrheit ist selten angenehm und muss in einer Demokratie dennoch dringend ausgesprochen werden dürfen.
I most watch wood stove with bricks plzz make pellet stove bricks stove for indoor kitchen where we use bio pellet instead of wood for saving trees plzzz--z
Pellets rock
lucky bastards, "both for heating and cooking", when the rest of europe sits in the cold dark in ww3, Some will still be cooking in a heated home, i´d buy one of those stoves if i had a house of my own
None single word of CO... But it's a huge questions and it's an issue
Rewatch the video and see Anna laying on the floor from CO poisoning.
carbon monoxide is only produced at high combustion temps, and is an inherently unstable molecule. In the presence of oxygen, it will inevitably decay to carbon dioxide. Wood stoves are rarely capable of creating carbon monoxide. Natural gas, propane, fuel oil and coal all have much higher flame temps, and are thus a far greater risk to create this gas. Luckily, minimal ventilation will clear a room in minutes and the detectors are very effective.
This is honestly a boogie man issue, made to seem far bigger by news companies looking to sell their airtime with fear.
@@ChristnThms It's not fully a boogie man issue looking on efficiency))
@@yevhenrekhtin6591 I didn't say anything about efficiency. I said that the threat of carbon monoxide was a boogie man, fed to people via news agencies selling fear.
Didn’t Benjamin Franklin figure either this or another way out?
Anna talks funny.
Well you cant measure it by weight because 1kg of dry wood is significantly more wood than 1kg of moist wood. This is why you measure the kwh per volume not by weight, this is a really cardinal mistake and the credibility to the rest of the video really suffers
LOL
This is sooooo stuuupppiiiddd !!!!!!
I'm not sure that the trees 'need' the CO2 from your fire to grow....there is an overabundance of carbon dioxide already there that is a problem for climate change. In a balanced ecosystem that statement might be true, but this is 2021 -' the times they are a changin'
Global man bear pig is very serial
@@barbarosasmth2104 Want to try that in english?
Poor English sentence structure produces inappropriate science reference. Biomass combustion cannot exceed 99+/-% because of variability. Thermal energy cannot be increased beyond primary chemical basis of original biomass. When you break the rules of thermal energy you violate everything else thereafter. See: en.m.wikipedia.org/wiki/Conservation_of_energy#First_law_of_thermodynamics. Re-title suggestion: Better heat management produces more thermal heat for your living space. Like the video content - Good info!
The film only mentions CO2 emissions at the end. It should mention this much earlier to be truthful that burning wood is not good for the environment. We are essentially using our atmosphere as a garbage space. Trees do take up CO2 and produce oxygen but at a much much slower rate than is emitted by the wood burning devices. Lets be truthful about the science and not minimize the impact wood burning has on our environment. Burning wood was ok when the earth only had 1/10th of the people it has on it now.
So your alternative is to freeze? Burning ANYTHING produces CO2. Hats off to you if you're freezing right now and riding a bicycle to generate electricity to use the internet. Otherwise, you're a hypocrite like the rest of us.
Whatever
I think you're confusing "pop science" with "real science" John and your flawed logic highlights that - back when the earth only had 1/10th of the people it also had huge tracts of uncleared land, and mother nature often set large chunks of that alight on a fairly regular basis with no great ill effect. If we're being truthful, as opposed to just spouting slanted facts and media memes, the increase in CO2 has more to do with the sickeningly efficient clearing of vegetation on our planet and poisoning of our oceans than it does with evil wood-burners.
Hi Nicholas. If your comment was directed to me I wasn't meaning to imply CO2 was poison; that part of my comment related to the screwing up of the C02 re-uptake process due to us using our waterways as garbage dumps, which does a better job of explaining claims of elevated CO2 levels in the atmosphere (for those who feel they need to of course). John and his ilk can't seem to fathom that a single "Fukushima" (one of _many_ more to come unfortunately) ultimately produces far more of their "evil CO2" than what our burning of wood does or could - even if all 7+ billion of us started doing it today. They're no doubt too busy trying to claim the sun doesn't warm our globe and inventing "compelling" economic rationales for why our increasingly seismically active planet needs yet more nuclear steam engines...
Becuase burning fossil fuels are so much better for the eviroment. Wood regenerates in 100 years. dino juice , millions of years. guess which one the pencil pushers are trying to ban? Allowing a quickly regenerated fuel to remain would make too much sense.
Глупая конструкция, посмотрите как сделано в печь Кузнецова.
All wood that decomposes emits co2, so burning it just releases that amount. The problem with fossil fuels, the co2 they admit, has been stored for many ages already. Therefore, you're not releasing co2 stored recently, but adding additional co2 from long ago.
You neglected the use of thermal mass in your house that seams to be a better solution and that has been used for thousands of years. You could construct out of a natural stabilized thermal mass material and absorb the heat instead of losing it. Instead of insulating inside the walls, you could wrap them in insulation, thereby collecting the heat and minimizing the loss.
Additionally, if you added ground thermal air intake with a solar chimney exhaust, you could raise the air infiltration temperature with little to no electrical use. Again, this is a method that has been proven over many hundreds of years. Even if a much less technological method is possible today.
That's why CO2 is good for the environment because the trees need CO2 to survive...
To much Co2 means to little trees, so we nee to plant them massively, she create also Co2 to oxigen for us.
Good for plants, NOT people / animals. Increasing droughts and wildfires destroys all of the above.
What shit!
These propaganda films are awesome. They will rate a wood stove at 97% efficiency and, because they are engineers doing it, people will actually believe it's true. Follow the money people. Who is paying these engineers? The ones that build the stoves. That is why the regulations are so stringent on heating with wood. They want you to spend 2K plus to install a wood stove and pay all the bureaucrats, when they know perfectly well that a rocket mass heater is 5-10X more efficient, safer and can be done by a average person for a couple hundred dollars. Do you really think that their prime concern is for the environment? If you do, well then, I just feel sorry for you.
They are not propaganda. First you have to watch the stupid video before you spout number that make no sense. Down draft wood burners are 90% efficient and a hell of a lot more then 2k. Mass heaters are more efficient, but once you're dealing with that 90% they are not 5x more efficient. They are a hell of a lot cheaper to build but a bit more work to keep going. As for the bureaucrats you're on your own depending where you live. I feel sorry for you and me for watching this boring video. However it was technically correct just dumb.
Not so easy to do without appropriate knowledge of welding
This video isn't politically correct, according to the politicians and their sponsors co2 is terrible..
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