Welcome to WoodGasifiers.com!

This site is dedicated to all things wood-gas and some things that aren't. It began as a way for me to keep track of things in the wood gas world that I found interesting, but has evolved into my blog about living off-grid part-time. I hope you find it interesting!
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My Inverter Experience

Gasifier Construction (Imbert, Downdraft, etc.):

Gasifier Experimenter's Kit (GEK) - FREE plans from All Power Labs
Even more free docs (plans) from the All Power Labs People
Wayne Keith's site about Wood Gas!
FEMA Wood Gasifier Plans - free plans from Uncle Sam (PDF)

More Woodgas docs collected while Googling:

Handbook of Biomass Downdraft Gasifier Engine Systems (PDF)
A Treatise on Producer Gas and Gas Producers (PDF)
Jesper Ahrenfeldt's Doctoral Thesis on a working woodgas generator (PDF)

Ed Burton's unique approach to biomass processing

Ed Burton Company (04/28/2012 "BIO-MASS to BIO-GAS" link dead, new site not yet found)

Some Mother Earth News Links about gasifier construction:

Special thanks to: Jeff Davis - Puffer Gas
MEN: July/Aug 1981 (Link Dead due to M.E.N. site re-write)
MEN: Mar/Apr 1981
MEN: May/Jun 1981
MEN: Sep/Oct 1981 (Link Dead due to M.E.N. site re-write)

MEN: Jan/Feb 1983 (Link Dead due to M.E.N. site re-write)
MEN: Mar/Apr 1983 (Link Dead due to M.E.N. site re-write)


The GEK making power

OldPlaner's Mother Earth News gasifier

I saw the GEK up close and personal yesterday (05/30/2009) at the Maker Faire 2009:

This was my first time seeing a gasifier in person and a few things about the experience were unexpected. First, the time from initial lighting to a burnable flare was much shorter than I anticipated. Such a short time is probably more attributable to the fine tuning Jim Mason and his team have done over time than it might be to any gasifier's ability to create burnable gas. Still, I thought it would take much longer than the few minutes it actually took.

Conversely, the time from initial flaring to gas suitable for running an engine was much longer than I expected. Though I wasn't looking at my watch, I think it must have taken somewhere between 25 and 40 minutes for the reactor temp to climb from 275 degrees when I first looked to ~600 degrees when Jim finally started the attached Listeroid. Since I don't know which thermocouple was being monitored or where in the reactor it was positioned (not to mention what the units were (Centigrade, I believe), I realize 275 and 600 degrees means very little. I did find a post where Jim explains it here: GEK at Maker's Faire 2009 photos (and gasifier tuning diagnostic idea)


And speaking of Jim Mason, I cracked up when I read this in the Yahoo forum:
...an easy way to "get out of newbie jail for free".

build your first gasifier by removing a cigarette from your pocket. once it is removed from your pocket, you have completed fabrication.

operating instructions.

1. light the end, put the other end in your mouth and suck hard. you now have an updraft gasifier lit and operating. continue until fuel is consumed. inspect your lungs to gauge tar production.

2. get another cigarette and light the end. but this time, put the lit end in your mouth and suck. you are now operating a stratified downdraft. inspect your lungs to gauge tar production. things should be much better, but still not good.

3. get another cigarette and light the end. this time leave it sit there and slowly smolder through the fuel. you are now running a direct combustion pyrolysis reactor.

this completes your first gasifier build.

now rest easy knowing we already have a globally installed base of gasification devices. we're just currently applying them to less than ideal ends . . .

Jim Mason
AllPowerLabs