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It's been repaired when I received it it didn't work

Van grieken.. from Holland.😂👍👍

I use an old broken solar hot water en electric panal to make hot air en some electricity (20 watt electric max ). This is used to blow the hot air using 2 small fans in series through the barrel of woodchips by direct contact. En this heats en absorbs the moisture in the wood, I measure both the temperature en humidity at the inlet en outlet of the barrel, there is a temperature swich in the panal to swich the fan on en off , this makes a nice en maintenance free fuel dryer that does the job pretty quickly

@oscarverwey ok 👍 v good. Will be in my woodgas set up 1day to.. if you get some old blue crystal...poly crystal solar panels you can power up any DC motor as long as the watts and volts rating are close to the same on each .. The new monocell panels don't do it..💥👌

@oscarverwey it's how I pump well water every day .. 70watt DC pump .. AliExpress. And old telecom panels 60--80w..18v. go ok even in cloudy days.

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I just came across. 😊😯🌋

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Fff🤬 gggoole delete ing my comments. Links .. 😡

I see what you mean its a interesting phenomenon, In a wood gasiffier, this happened by itself . You have hydrocarbons to make the heat you have moisture to make the steam so you can use al the charcoal for reduction. If you do it correctly you use the product gas en exhaust gas heat to do the fuel drying, air en steam superheating, torrefaction en pyrolysis so oxidation en reduction is a easy job to make tar free gas with high moisture wood , , Way more efficient than those charcoal gasiffiers

Yeah sure no problem. Oscarverwey@gmail.com

Yes i have email oscarverwey @gmail.com

I appreciate your comment. Both the producer gas and the exhaust are fully taking care of the fuel drying , torrefaction, steam en air superheating, and pyrolysis of the wood fuel . This makes oxidation en reduction an easy job as the tar, steam en air ar already around 400 to 500c . This saves an awful lot of energy, cold gas efficiency is above 95%, and it uses 20% les wood than any other gasiffier because of the heat recouberation . As this gasiffier doesn't have any filters or radiators, the tar free gas comes out at around 60c when fully warmed up . In working on an easy startup method as we speak using a jet combustor so some of its own gas can be used for preheating the screw feeder.

If you know what you're doing, it's not dangerous 😉

@oscarverwey I know your work safe!!

I appreciate your comment, i agree that an annular combustor is pretty clever throughout . Specially when you can hold the shell like that while it has been burning for 1/2 hour ;) , I used this combustor to drive a tiny turbo jet engine made from a diesel engine turbo last year or so , the thing was terrifying en awesome at the same time. Now I plan yo use it as a starter for the 2 viking stage gasiffier so it doesn't need to rely on a different startup fuel to make exhaust gas to get the pyrolysis going in the screw feeder. I believe, together with steam recirculation in the hopper, it's the ultimate gasiffier for high efficiency while using high moisture fuel (30/40%)

It will be a fancy way to cold start the 2 stage gasiffier without the other engine giving it heat for the 1st stage ( screw feeder pyrolizer)

​@@oscarverwey does it mean 2 stage gasifire?

There is a other gasiffier design I replicated from the university of Denmark (viking gasiffier) it uses the exhaust gas of the engine for fuel drying, torrefaction en pyrolysis in the automatic screw feeder so the reactor core have a easy job making tar free gas at high efficiency . Les oxygen is needed for this process

@@oscarverwey 💣💣

Yes, that's right, raw gas it's only cooled by the radiators , you can see only water fog/mist

Yes its not a Drizzler so it should be filled to the top, after a trail run i always look inside en play a bit with the air valve . Its better to run it empty because then at cool down the pipes don't build tar on them . En we don't like tar are we 😉

I appreciate your comment en find it amazing that you like to replicate it . Make sure the combustor is made of stainless steel otherwise it wil burn en the grade wil block to to ash/steel alloy rocks . I also recommend making the reduction zone 2 to 2.5x the diameter of the tube . Greetings

@oscarverwey i've already made the combustor but not with stainless Steel :/

@shlagueurdetek5197 ow then i hope you have made it of a decent thickness like 4 or 5 mm thick this will last for some time . In my next video I'm showing how the thin tube looks after 20 hours of running.

@@oscarverwey unfortunately i made it with50mmx180mmx2mm tube. You think the tube will melt at the first run ?

@shlagueurdetek5197 For sure, you need to make a new one eventually, but you will get the hang of it . You need to use different diameters en lengths for your particular fuel en diameter vs. power output

Primerly olive wood en sometimes some pine en oak. Everything is from prunings, so low quality chips (lots of small peaces, bark en twigs ) it performs well 😄

@oscarverwey I thought in your chip drying video you said olive and pine. Do you think the pine is hurting your gas quality? It has a lot of resins, I wondered how it would do for gas. Good job brother.

@brosby yeah thats right, I use al different kind of wood that is available at the time, but primerly olive 🫒 wood have high oil and more energy to , so with the right gasiffier. There is no tar at all

@oscarverwey Good deal. I appreciate you taking the time to let us see your experiments. Good work and good luck.

@brosby I highly appreciate your questions en comments , greetings 🙏

I highly appreciate your comment, Yes that the plan more frequent automatic shaking primarily of the hopper. for the grade shaking like with the 2 stage gasiffier its gonna be triggered by a water level switch . i don't need to shake is very often because the pressure drop is not high most of the time its only a few cm water coloum. i just need something to crush the ash rocks, This test proves to me that i need to go back to higher reduction zone (200/300mm) including the restriction like in the previous test then i got perfect gas though the sand filter No matter what ;) 120mm en is just not enough

Excellent point, i always wondered why some make them the other way around . I believe lost of stuff accumulates there en never falls out . We will see what it does . In my experience the grade steel never gets hot enough to get damaged as i always use big reduction zones

Sound like one to 😉

Thats a interesting thought I appreciate your input. The conversation efficiency is really high en the gas is clean . I use primarily olive pruning wood chips . I testen different quantities en sizes but in this particular gasiffier it always makes ash stones. I also don't shake the grade very often sometimes not at all . I believe the ash melting is around 900c for bark en twigs en wood dust . En this venturi gasiffier melted the 1300c k-type thermocouple in a few hours so i believe i should deal with the grade en make it moving en crushing

The high temperature in the core can be lowered with steam. The pipe at the beginning of the roller is also thin, make the diameter according to the large diameter of the umbrella, then there will be fewer hangs and remove the studs, also make it straight and insert it through the cover.

@vladimirmelnik6289 That's good info. I will try that soon , some of that I already thought, but it's nice to hear it from another experimentor ;)

@vladimirmelnik6289 i believe i also need 30% Moisture or more , this is on 25% Moisture

​@@oscarverweyThe supply of steam to the core, superheated steam, lowers the temperature of the core, increases the gas output.

The condensate is clean enough so it doesn't need treatment like most gasiffiers. Ore do you mean if it's possible to get no excess water in the gas at all ?

@oscarverwey yes. I mean no excess any condensate at all... it is difficult utilize it, very agressive water

@agordi I don't believe that's possible without getting very weak gas . It's not difficult to utilise at all. What I do is preheating the fuel en air with the gas en then into a radiator en its at room temperature, if you use a mist eliminator or sand bed filter your done if you have a zerotar en low moisture gasiffier like this one 😉. If you want it to be perfect, you can also use an electrostatic presipitator at the end to filter the remaining 3% of the fog out . This is what I found is the best way

@@oscarverwey thank you for infomation. I am with big interest watching for you.

@agordi I appreciate your comments it helps the channel to grow 😀

Absolutely up to 12m3/h it wil produce super clean gas I've run 200cc honda clone engine with car alternator that generates 1 kw en it works pretty good

@@oscarverwey its super!

Separate canister with sand as a final water mist filter. Makes al the difference the efficiency is really high (around 90 to 95% )

@oscarverwey Thank you sir. Sand makes one heck of a thermal storage medium. Hot water at night in the winter without electricity or fire. Be careful and good luck.

@brosby that's right, it's nice stuff , I just use it as a cold vapour seperator for dry en clean gas for the engine

For this small scale its important to use small chips i run 3mm up to 20mm in this 110mm gasiffier with 32mm venturi combustor , 3mm up to 15mm works best for me . Pellets can work but they don't give zero tar gas like the chips (10mg/m3) just low tar gas like (60 /100mg/m3