WVO (waste vegetable oil) burner

Experimenting with the same principles as used in the truck (getting the oil hot so it vaporizes, combusts, and flows easily). There are biodiesel stoves out there, notably the kuma stove that is being sold across the State border in Hayden, Idaho. But again, I don't like the idea of putting more effort/resources into making bio diesel, when surely something can be done with just straight veggie.



It works very simple, get a fire going hot, then turn on the valve, and let it drip on something that is hot as well, and it will sustain itself, well not consistently with a 1/4 inch copper tube. This is where others start adding compression and fans etc to make it consistent.... For me it is just experimenting, not getting too technical. The oil gets stuck sometimes in the needle valve, presumably because at that point the oil is only room temperature, I'm using a lot of hydrogenated stuff that I don't really want to put into the truck. Continue to experiment. The nice thing is that I can use the really bottom of the barrel oil for this purpose.

Couple of observations:

- When it is a good fire, it is really hot, I have never seen our stove get this hot with wood, there are several metal layers in the top of the stove to get a clean burn, and the top can still get red-hot, even with a fan blowing air over it, to get the hot air out of the insert. One has to be cautious with this stuff, if there is anything flamable near that stove. There is about 2 feet of copper tubing in the stove, so when it is hot, and the drip is not very fast, it will come out vaporized, like a torch. It also helps to have the oil warmed coming in. (which you pretty much have to do when it is hydrogenated anyway)

- The black light fluffy stuff is I assume soot, or unburned fuel. If not very hot, you get a coat on the metal in the stove, so I crank it up periodically and put some more wood in as well, this burns it off in the stove. Will have to examine the chimney at some point to see how that looks. Probably bigger issue with smaller flue. When looking at what comes out of the chimney, during a good hot burn, there is just heat, hardly any smoke, so clean burn. When just a small burn, you see the fluffy stuff fly out, as well as a little black smoke, not more than a wood fire though.

- Putting some grease in a metal bucket and letting it boil in the fire, will also create a really fast hot burning fire, once it starts boiling, but the dripping allows much more control.

Both our stove dealer and a fire fighter didn't think this is a good idea, (this is to be expected, since this is an unpredictable fuel) so I'm not advocating it, nor doing it at this point, as our dogs ran off with a grease rag and leaked it on the nice couch...