Here is a small stove with strong smokeless flame which burns wood sticks or wood pellets. Just fill with wood, light a match then throw it in on top. Can boil 5 litre of water on a can of wood pellets. Video of the flame: www.youtube.com Using a chunk of wood for fuel: www.youtube.com My goal is to get the cleanest and most reliable burn from wood pellets with a simple tin can stove that can be made using simple hand tools. Starting with the original Donut Wood Stove as version 1, this would be version 22 for the shape and location of the large secondary air hole. Based on the shape and flow of the flame, the hole shape evolved from a small circle to a larger circle to a horizontal rectangle to 2 rectangles to 2 rectangles with 2 extra holes to eye shaped holes to the large eye shaped design you see in this video. The main characteristics of this design is that the fresh air cut across the rising smoke. . With different sizes of the fuel container, the number/size of primary holes at the bottom and the size of the secondary air hole (the hole in the middle), you get different heat output and burn duration. For low power/short duration cooking, I use just the small middle can with the bottom intact to cook either one serving of rice or pasta. This small can holds only max of 120g of pellets but will boil 1.8 litres of water with only 35ppm of carbon monoxide when I tried it indoors. This is getting closer to the most efficient wood cook stoves which use less than 50g of ...
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