Glenn Herbert wrote:What you are describing doesn't sound like any kind of rocket combustion unit. To get the combustion efficiency and heat output of a rocket stove, you need specific geometry (there are several proven styles) and an insulated combustion zone. Even if you are just mainly wanting a burner to get rid of waste biomass, you would want to burn it completely and not generate pollution. (There is another important point of why you would burn biomass instead of composting or otherwise turning it directly into improving your soil.)
A regular exhaust pipe or muffler would not allow enough flow for a fire similar to your picture to burn well - one principle of rocket stoves is that the cross sectional area is relatively constant throughout the stream. You need fast enough flow after the initial combustion point that the gases experience turbulent mixing, and all the fuel gases can meet oxygen and burn.
https://permies.com/t/41635/Top-Questions-Rocket-Mass-Heaters
http://donkey32.proboards.com/thread/1170/tube-dimensions
cool i see, and i understand, i dont have somuch $$ at my hands and just want to burn my allotment waste, reason it was overgrown with horrid seed grass so every seed grows i wana burn em off this time, and keep burning them we also have meres tail that breeds liek hell
i was hoping of making my burner safe as to not burn all the bushes and dry grass around like a normal burning bin will..
any ideaS? im a welder
