Powerful DIY vortex gasifier cookstove

This is a larger version of my coffee can vortex gasifier stove and uses two larger coffee cans to hold the pellets. It cooks for 90 minutes even using high output for much of the time, and produces almost one coffee can of biochar at the end of the burn. It's a top-lit other-draft forced-convection - TLOD-FC. I found that a small 4" computer fan created more than enough draft to really crank out the heat - on oak pellets at full speed it brought 4 liters of cold water to a rolling boil in just 6 minutes!

This is the first of my gasifier stoves that I can add fuel to without worry of putting out the flame. It just produces more gas and thus a larger flame, but with the adjustable fan speed I can compensate for that by turning it down a bit.

I scrounged pretty much all of the parts for this stove, even had previously bought the pizza pan from Walmart for $3 for use in another experiment (a circle of sheet metal would have worked, too). The 400 ohm potentiometer/rheostat that I had seems to work very well for controlling the speed of the fan, and allows 0-12 volt output from the 12-volt battery to the fan. A 200 ohm pot would likely work even better.

This was a very satisfying project, lots of fun to build it and then cook with it for such a small outlay of money. I buy the oak pellets at Lowe's Hardware for $4 per 40 lb. bag The twigs and leaves burned up very fast and left no biochar, so not as good as pellets.. I'll be trying wood chips soon to see how it does with them.

Видео Powerful DIY vortex gasifier cookstove канала Approtechie