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This is a video of a home-built wood-gas stove that was built by a project committee of a Sustain Jefferson, a Natural Step community. It demonstrates a downdraft-stratified gasifier.
Wow this looks like a red green show,,,
You guys, have you consider before playing with flamable gases:
to wear safety glasses,
put you dog down
get gloves,
and , hire a chemical engineer,,,,
ray
Very nice work! I am working on a gasifier of my own and I am having trouble with the gas quality. How many CFM is your fan? I am using a 12 inch steel pipe and a 50cfm fan.
By sabbadess [Affiliate User] 1208403635 Reply Spam [+0] Moderate Up Moderate Down Removeyea i have seen this on tv thay use 2 big tubs 1 bigger than the outher fill the big one with water and the smaller on upsaide down into the big one and drill 2 holes on the top so the air can come out and the tub ill sink and then start filling with the gas and the tub will rise and it will be stared and when it runns out it will sink back down so u can have a guess on how mutch u have left if you need drawings tell me and i will email you ASH
By pitbike2006 [Affiliate User] 1207641168 Reply Spam [+0] Moderate Up Moderate Down RemoveThanks. Our filter caught fire too, after a very minor explosion inside the filter. It was caused by a small amount of air leaking into the filter, oxygenating the combustible gasses, and back-firing from the flame head into the filter. Quite exciting really! Once we sealed the head of the filter can, it eliminated the problem.
Our fan was used to inflate our double plastic skin greenhouse. They are available for around $50.
Our joints are all brazed, except the burn chamber to top plate.
nice gasifier. We also used the FEMA plans and the first attempt at lighting looked identical to yours. Our filter eventually caught on fire, so we abandoned the fema filter. Where did you get that great blower? And are all your joints brazed?
Cheers.
Due to the large amount of incombustible gases in the wood gas, compressing and storing would cost way too much (electrical) energy for using it in a CNG vehicle for example. I thought of this myself but I let go of the idea as soon as I realised how much energy and storage space is needed .... :-(
By Hardy404 [Affiliate User] 1205953328 Reply Spam [+0] Moderate Up Moderate Down RemoveNice build on the plans from FEMA! Just wondering based on the size of the hopper in the plans and a flame size shown in your video how long will a hopper full of fuel last based on your experience? What type of blower and size are you using?
By rugs0807 [Affiliate User] 1205651803 Reply Spam [+0] Moderate Up Moderate Down RemoveCan you compress and store the gas produced? Please let me know. This is amazing. Could you please send me your design?
By Astrejim [Affiliate User] 1205546994 Reply Spam [+0] Moderate Up Moderate Down Removecool,, thanks
By mrhjoker21 [Affiliate User] 1204041835 Reply Spam [+0] Moderate Up Moderate Down RemoveWe have thought to change filters, but it all takes time and energy. If we do a liquid filter, we'd probably use oil as the liquid, as it has an affinity for tar, which is the major contaminant in our wood-gas.
Most of the water seems to accumulate in the water traps and base of the wood chip filter.
Cheers,
Greg
Hi,
We get ours at the local farm supply store, Farm and Fleet. They're also available at our local feed mill. They are becoming more and more available.
hey this is really cool...i made a gassifier out of an old paint can, soup can and a small fan. it works great. but would most likely work better if i could find some wood pellets....could you suggest such a place......thanks
By mrhjoker21 [Affiliate User] 1203716407 Reply Spam [+0] Moderate Up Moderate Down RemoveAwesome!
By angelodommy [Affiliate User] 1203594934 Reply Spam [+0] Moderate Up Moderate Down Removewhy not use the WATER bubbler after that filter to avoid corrosion in the engine.
By TiczonFamily [Affiliate User] 1203370296 Reply Spam [+0] Moderate Up Moderate Down RemoveHello...
I have a very strange question: could you tell me what is the music in the background as this vid not only looks but sounds very nice ;-)
Keep up good work!
Cheers
The old WW2 filters used crumbled up cork pieces to trap water in the filter. Maybe an inch deep along the bottom to start? Place a small screen over that, and add the wood.
By 0cujo0 [Affiliate User] 1201338426 Reply Spam [+0] Moderate Up Moderate Down RemoveHi Glen,
Thanks!
Any wood will work; some contain more caloric content and will burn longer and produce more gas. Most any biomass can be made to flow and fed into the stove. Grains work well too. Proper moisture content (20% or less) is necessary to not retard desired mass/energy conversions.
Interesting idea to preheat and turbo-charge with the exhaust from an ICE.
We turbo charged our stove with a shop-vac. The cozy 12 inch flame turned into a roaring four foot torch. Really amazing!
Greg
Great work guys. Question. How important is wood type ??poplar, cedar, walnut?? I have a design in the works that uses the ICE's exhuast heat to keep the wood smoldering but not combusting for more gases at a high temp. The exhaust also provides pressure. The second chamber (filter) has a valve at the bottom to release the unwanted heavy gases. The lighter gases will exit the top to the carb. Thnx
By glen196969 [Affiliate User] 1201270623 Reply Spam [+0] Moderate Up Moderate Down RemoveThanks!
We did use chipped wood for the filter medium. It is working reasonably well, though I don't have much to compare it against.
We do seem to need liquid traps to catch excess moisture. This could be due to using not quite dry enough fuel.
Great Job! Awesome gasifer stove!
I've seen the old Pre-WW2 stoves and have lots of questions about this advanced model.
The filter medium used(dried wood?), do you still have to drain the filter unit often? Like the old gasifiers?
Tesla wanted to run cars, trains, and airplanes with his turbine. Most of his turbines ran on steam, but he had gas-powered designs that didn't need a carburetor, just a valvular conduit with no moving parts. Try googling "frank germano tesla turbine" for detailed info.
By MrfixitRick [Affiliate User] 1200074639 Reply Spam [+0] Moderate Up Moderate Down RemoveThanks!
We're working on finding an old pickup now. We're going to hook it up to am old lawnmower soon and work out the kinks. I'll try and film this and put it up in the future.
Our group had thought to use the wood-gas powered pickup in parades and county fairs to draw attention to local, sustainable energy systems. Maybe power a small bus at fairs or at local downtowns.
We sure thought it was. And lots of fun too. And Practical.
Using a Tesla Turbine is a very interesting thought. I'm not extremely well educated about about them, but have considered building one in the past. They don't look all that complex or difficult to build.
Any thoughts?
Search for: fema wood gas generator gengas
It's the first link.
Kind regards and happy welding,
Hardy
Any chance you could post links to the PDFs, etc. that you got your information from? I'm incredibly interested in this idea. Thanks
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