Wood Gas Stove

[dizzaeble]

hi, im just really wondering what are those tins or drums u used, and were did u get them from? thanks mate

[jaybee66]

@dizzaeble - The large drum is a 25 litre vegetable oil can. You can get them from the back of any pub kitchen or takeaway. The smaller can is any bulk vegetable or coffee can.

[Klojerk]

can i light it with out fuel ?

[jaybee66]

@Klojerk - you certainly can

[ohvnaq]

nice. did you make this yourself? if so how did you weld the pieces of metal together? what's that white material around the rim at 2:35?

thanks! i'm a noob.

[jaybee66]

@ohvnaq - I put it together myself without any welding. The white stuff is fire cement and is used to fill holes and gaps between the two pieces of metal. For more, read the woodgas.org.uk website and search for posts on the MIDGE stove.

[future2501]

This is the best demonstration of a wood gas stove I have ever seen. Thank you so much.

[jaybee66]

@future2501 - All without the aid of an electric fan - Thank you

[jaybee66]

Yes, the twigs are all enmeshed so when you tip the bucket it all falls out. The cup measures out a specific amount for the job.

[Mr1deerslayer]

?? why put the chips in the cup AND then the oven, and not from the bucket to the oven? any reason?

[catalinux007leiro]

wow, so simple and efficient design

[xagog]

How long it takes to boil a 1 liter of water?

[TogieTung]

wow the design is so simple I could scale it up to a size of a steel shipping oil drum. By the way, I'm planning to make bio char using this design. Thanks for the tip & great video.

[jaybee66]

I'm glad you found the video useful.

Good luck with your project.

[ahoyhoy79]

if your to make biochar using an oil drum would it not be better to place wood inside it, put the lid back on (cap off) and then put the drum over a heat source?

[caboflyguy]

@TogieTung Uh......yeah, it's so simple because it's a stove, not a wood gas or gasifier. It's a long way from that. Will not power the world. Maybe a cup of hot water. The gas used from this in a real gasifier would boil 10 cups for the same amount of energy used. Change the title of you video before you give wood gasification a bad name.

[TogieTung]

@caboflyguy

Sorry for the mistake, I should have said Victory Gas Works. This guy is amazing, not only he knows the basics of gasifier but also made a living building gasifiers for Universities, corporations & private individuals. If you're interested call this guy, he's the one stop shop on gasifier tech.

[cdltpx]

I found mine on line google it you will have plenty of examples of people that have build their own. I fashioned mine from coffee cans neat experiment but I probably will let it rest for a while need to heal first bum leg. Google wood gas stove look then click on photos on google page and you pick one that looks home made.

[cdltpx]

Last night I built a premitive stove but didnt use a fan when I tried to cook and the bottom of the pan was filthy. Tonight with the fan type the eggs cooked faster and the bottom of the pan was clean only had to clean the inside of the pot no scrubbing on the bottom as last night. Build you one you will not be dissapointed.

[rogeliomarigomen]

hi, can you send me plans to build one

[cdltpx]

used a 12 v computer processor fan and a 12v 800 ma transformer to power it. I first placed a variable transistor but burnt that up and decided just to go without that thing.Toward the bottom the device stays mildly warm after finding this out I decided to use some sticky foam type insulation the kind you run in the gap of a door and cranked it up again and it not only held but ran a good 20% better. I was worried the heat would cook anything but metal but it is hot mostly at the very top.

[cdltpx]

Ok just built my first wood gas stove and that thing is incredible. I used a big can and a little can got them to stay together by crafting the metals together then used screws and bailing wire to get the two to stay together then cut out a spot for the fan and fired it up. Worked like a charm cooked some eggs as efficient as the stove in the house. Spent the night sitting out staying warm need mild mods but will do when I get rested. Make your own not even 3 hour project the first time.

[cdltpx]

The reason I thought nitrogen was in the process because it can slow down the chemical reaction being an inert gas. And that would explain why the wood doesn't combust as it does in a camp fire. The oxygen from air is being consumed prior to arrival to the wood the heat causes the wood to make its gases and gets its oxygen from the wood.

[cdltpx]

Wikipedia, gives a process description if what really happens in the wood gas stove. Just found out that during WW2 there were over 1million Biomass automobiles in use due to the shortage of petro. There are many applictions of this ancient tech. It is sad to because where I live we have so muh construction they just bulldose the land into a pile and burn the entire pile that wood could be put to good use making electricity or powering cars. There is a pix of a truck in use today.

[cdltpx]

Try this web site it shows more detail. Also you can look into Wikipedia search wood gas it goes into the science behind the making of woodgas. It seems to require less oxygen and more nitrogen it is supose to separate gasses in the fuel unlocking a secondary fuel form. I like this one because it is home made uses no batteries and cost only a few hundred homemade cups of coffee.

[jaybee66]

Nitrogen plays no part in the gasification process. It is present in air and will just come out the other end of the gasifier intact. If you then burn your gas in an engine then the nitrogen with turn into NOX, an unfortunate greenhouse gas.

I don't drink any caffeine but thankfully I found my coffee can at a recycling dump.

The 20-litre oil can came from a restaurant.

[rogeliomarigomen]

the MIDGE is not the same as shown on the video. can you give the instructions for building the stove shown in the video? thanks

[jaybee66]

No two MIDGE stoves are alike. They are all made from scrap. It is not how they look that matters. What matters is that the same combustion process is operating for all stoves, regardless of how they were put together.

I used the instructions on the website and built the stove you see in the video. It doesn't look the same but it does operate exactly the same.

Different form. Same function.

Look at other videos. All different forms. All carrying out the same function.

[rogeliomarigomen]

why are there no holes in the bottom of the combustion chamber (the one-gallon can)? the video shows punched holes in the bottom of the combustion chamber

[jaybee66]

Are you talking about the plans? There should be holes at the bottom and lower side of the combustion (inner) can.

The plans and video both show holes at the bottom of the inner can.

Of course, you can experiment without and see what happens. Other experimenters have stoves with components that can be swapped in and out for different configurations.

Wood gasification is not an exact science.

[jaybee66]

For plans have a read of my blog - Link above right - I am struggling to post a link here.

[rogeliomarigomen]

i want to make the stove as seen. can you send me a detailed plans with dimensions. thanks.

[tuizentfloot]

this stove works great!

[jaybee66]

I like yours too. They are easy to build and do a great job!

[burwick182]

can you send me a detailed plan with dimensions ?

[ormus55]

journeytoforever dot org.

see this website for all you need to know about cheap effecient stoves. and all things green etc...

[OleTC]

This is very interesting. Thank You for posting. Does the fire have to be on top of the wood being gassified?

This obviously gives a challenge, adding new wood to the gassifier. Will it simply burn, if new wood is just added on top?

[jaybee66]

There is another type of gasifier called the "downdraught gasifier". It is used in automotive applications. The fire is at the bottom, wood chips can be added to the top of the stack and suction from the engine pulls air through to the combustion area.

[dawnrun911]

How long does it burn for?

[jaybee66]

Depending on draught it can be 20 mins or twice as long. If I am heating a kettle as in the video then the kettle will slow the throughput of air and you get a longer burn. As a space heater with a flue on top of the stove the burn is much quicker due to the draught generated. The maximum amount of fuel this gasifier can handle is 600 grammes. A larger one would liberate more heat. Something I will get round to during the year ahead. Thanks for watching.