Last time, I made a DIY secondary combustion stove and confirmed the combustion. The fuel was pellets, and there was a secondary combustion from the side, and a vertical flame like the Swedish torch. However, as a torch flame, the firepower was weak and it needed improvement. This time, we introduce the improvements.

[Table of contents]

00:00 Opening
00:07 Digest of the previous video
00:59 Improvements
01:56 Combustion confirmation
05:54 Closing
　
[Production of secondary combustion stove]

Please refer to the previous video.

   • 二次燃焼ストーブ DIY　トーチとのコラボ  火力調節付  

[Improved parts of the secondary combustion stove]

① Top lid hole diameter Φ30mm ⇒ Φ50mm

② Addition of a slit to the air intake hole in the outer can

[Confirmation of secondary combustion stove combustion]

Using 900g of pellets, pour alcohol for fuel and ignite. Pour fuel alcohol into the torch, and put a hemp string etc. to promote pellet ignition on the side. A secondary combustion flame appeared about 2 minutes after ignition, and then a torch flame also appeared.
　
①The diameter of the hole in the upper lid Φ30mm ⇒ Φ50mmThe opening of the flame has been expanded by expanding the hole, and the flame of the torch and the secondary combustion flame have been combined to increase the thermal power.
　
② With the slits leading to the air intake holes in the outer can, closing the air holes cuts off the air and reduces the flame, while opening the air holes increases the flame. The torch lever adjustment can also adjust the strength of the torch flame when the slit is open, but it was not very effective when the slit was closed.