woodgas stove link

[slabfoot]

check out this site for work being done on the design of a backpacking down-draft wood gasifier cookstove.

http://www.imrisk.com/woodgas/ddstove.htm

regards,

bill

[PKH]

Thanks for this interesting post. I'll be making one of these things.

Cheers,

PKH

[Jim Henderson]

Sounds interesting althoug they have a limited bandwidth daily alotment, ie only so many views per day. Also you have to copy the document and the pictures separately then paste them back in if you want a printed version. At least I was unable to do a full document print without having to do this. I got a message about "remoteimage linking disabled etc".

Could be a fun scout project.

Jim Henderson

[brian]

I built one with great success. I tried it 3 times today., and it worked almost as other reports have posted it would.

Brian MacMillin
Future Thru Hiker 2013

[RayGarlington]

Brian,

Glad to hear of your success. You said that it worked almost as expected. What problems did you have? I'd like to use your comments to improve the description on my page.

Here is an updated link (50mb.org has disappeared):
http://www.garlington.biz/Ray/WoodGasStove/


Thanks,
Ray

[PKH]

Ray,

I have been reading of the developing Wood Gas Stove with great interest for the past week and am about to build one. It seems from your website (and Risk's) that each new version lasts only as long as the time it takes to build a new one! The separate burning chamber is a case in point. At this time, which do you believe is your most efficient, easy and fun to use model?

Cheers,

PKH

[RayGarlington]

I would go with the initial model described on WoodGas.htm The others are under development and unless you need to boil more than a quart of water, there is no need to go larger (or more complicated).

You should be able to build it very quickly and easily. And it is fun to use. However, it is not the most efficient.

[Zero Day]

I built a prototype out of two coffee cans. A two pounder serves as the outer heat jacket and pot support and a 1 pounder serves as the combustion chamber. It works well.

If you Google “Inverted Downdraft Gasifier stove” you will get more theory of operation than you want. One point is the ratio of primary air to secondary air. This ratio seems to be important if you are to get blue flame.

I notice that the outer shell gets too hot to touch but has not burned the paint (except at the top). I have installed three small feet and have used the prototype on a plywood table without scorching. Prototype number two will stand the combustion chamber off from the jacket at the bottom and should eliminate the need for feet and allow use directly on the forest floor (after testing, of course).

One other feature is that the burn cycle takes you through a quick gasifier phase and then into the charcoal phase which corresponds rather nicely to the “bring to a boil and then simmer” instructions on some noodle and rice dinners. I have yet to try it with real food. I have been lighting using charcoal lighter fluid and have not had much luck with other means.

[Zero Day]

Check this out.

http://www.pacifier.com/~stikstov/