Greetings-Good to be on board with you all!
My friend here Luc got me interested in wood gasification a few months back. Luc is doing the final tweaking on his GEK system. He is part of the wood gas forum.
Since the summer of 2005, I've discovered a new flame process that spins fire inside of a tube creating a type of endothermic reaction. Basically you charge up a tube with air and propane, light the mix, then gradually pull back on the controls until the flame 'pops' into the pipe. Si…
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Posted on February 25, 2009 at 8:43pm — 4 Comments
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Chris
For high efficiency you need to transfer most of the heat from the gas to water or air. Thats the main problem, and not how to efficiently combust the fuel.
If you cared for efficiency, you wouldnt waste so much propane just heating the atmosphere.
Good pulse jets have combustor in which combustion takes place, and not on the end of the pipe. Flame is on the end of the pipe when you dont supply enough air inside.
As the combustion is pulled inside burn is not constant but resonant just as you say. But thing is that its becouse of little explosions. So mixture explodes, making more pressure inside, hot gas rushes out mostly trough the bigger pipe. Becouse of the gas rushing out, vacum is made inside which pulls propane air and some hot gas inside which explodes again...
Surely no one would have a furnace so loud in their garage.
http://www.home.no/andreas.sunnhordvik/English/mechanical/valveless_e.htm
http://en.wikipedia.org/wiki/Valveless_pulse_jet
http://www.pulse-jets.com/valveless/index.htm
I have a few strong naysayer words,
Endothermic reaction would be if the temperature would fall becouse of something, but in your case its getting hotter so its EXOTHERMIC and not endo.
We dont hear the speed of the flame but the frequency of pressure oscilation. So I think this is becouse that spinning mixer starts to rotate faster.
Are you using propane or wood gas? Stochiometric (just enough air to combust all the propane) flame temperature is about 3500F, if the mixture is rich in propane, then its even some more.
Aluminium melts at 1200F, molten aluminium reacts faster with oxigen, which heats things up. Ever heard of thermite? Its reaction with aluminium powder with rust( iron oxide), its extremely exothermic and produces molten iron or steel. Its used to link railway tracks together on site without welding. So I think this is the blame for the bright light.
Melting point of titanium is about 3050F.
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