Original file (1,100 × 450 pixels, file size: 157 KB, MIME type: image/png)
Schematic of a Bushbuddy stove based on http://www.backpackinglight.com/cgi-bin/backpackinglight/forums/thread_display.html?forum_thread_id=18867. Permission pending There are 2 versions of a wood gas stove shown:
- The first one is a simpler version where
- the air enters trough the hole & air inlet and wood gas/air outlet have seperate piping. The air enters unobstructed under the grating and is transformed to smoke. The firebox has only a partial top, but smoke remains in the stove and is driven downwards and trough the charcoal as the wood gas flowing out (& and igniting) forms a barrier to the smoke. There are inlet/outlets under the grating, yet the smoke will choose the outlet (which lies under additional charcoal; the inlet is unobstructed), as the inlet already has outflowing air (and thus provides a greater obstruction). Wood gas and inflowing air exchange heat variations with each other and so the wood gas cools and condenses, making it more potent. The wood gas flows up and then comes up above the fire, where it ignites.
- The second version is almost identical in operation but differs in that (first part of) inlet/outlet pipes are not side by side, but instead at 90° opposing to each other. The top of the firebox is also closed and the outlet pipe starts up higher, improving the circulation of the smoke downwards. Also, no extra charcoal is needed to be only on the outgoing pipes.
Note that the Bushbuddy stove is sometimes called a "wood gas stove", but it really isn't (doesn't have a regular downdraft gasifier setup). Rather, it's more like a Bunsen burner, as it is capable at drawing in more air from the outside (as it has lower/upper air inlets), herby improving the efficiency of the incineration. Since its isn't a wood gas stove, changes were undertaken by KVDP to make it a true wood gas stove.
This image are 2 modifications/variations of the Bushbuddy stove proposed by User:KVDP based on an image found here. That image was an image made by Denis Hazlewood who describes it as his "the best guess of the internal design of the Bushbuddy stove. See also this site for additional schematics of the Bushbuddy stove manufactured by Fritz Handel of F.H. Enterprizes, Box 36 Iskut, B. C. V0J 1K0 Canada. Permission from Denis to use and modify the image under GFDL has been forwarded from BackpackingLight.com, on Jul 7, 2011. User:KVDP & I each have a copy in our email accounts. --Chriswaterguy 20:06, 9 July 2011 (PDT)
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 09:26, 10 January 2013 | | 1,100 × 450 (157 KB) | KVDP (talk | contribs) | improved pan attachment design; with the new method the air flow can't be obstructed anymore if the pan becomes overfilled with ash (significant problem) |
| 09:18, 10 January 2013 |  | 1,100 × 450 (158 KB) | KVDP (talk | contribs) | changed top of other design aswell, simplified the whole thing with both designs | |
| 08:54, 10 January 2013 |  | 1,100 × 450 (171 KB) | KVDP (talk | contribs) | changed top a bit of second design | |
| 17:39, 6 July 2011 |  | 1,100 × 450 (171 KB) | KVDP (talk | contribs) | Added flange at bottom of wire grate; this will conduct the smoke better downwards, allows the other part below the grate to have a unobstructed inlet | |
| 11:50, 26 May 2011 |  | 1,100 × 450 (170 KB) | KVDP (talk | contribs) | Various changes | |
| 09:52, 26 May 2011 |  | 538 × 450 (112 KB) | KVDP (talk | contribs) | Implemented seperation air and wood gas inlet/outlet, closed firebox | |
| 09:51, 26 May 2011 |  | 538 × 450 (107 KB) | KVDP (talk | contribs) | Schematic of a wood gas stove based on http://www.backpackinglight.com/cgi-bin/backpackinglight/forums/thread_display.html?forum_thread_id=18867 . Permission pending |
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