exhaust bell from barrel

Is it important where the exhaust bell is located on bottom of barrel in relation to burn tunnel, I see most are about in line with burn tunnel... was thinking if it would be ok to have barrel sitting on top of core and not wrapping around core going to floor? see photo example.

That's fine, it is how I have mine (second drawing) barrel sits on top of burn tunnel

, thanks,
the second photo the core is inside the barrel with exhaust down low, and the 1st photo the barrel just sits on top of the core, (I assume you meant yours is like the 1st photo) does it make any difference in how the rocket stove performs?
thanks

ah, yes. sorry. The first pic is how I have mine, barrel on top of the tunnel. As far as I am aware it will make no difference. As far as the 'structure' (feed/combustion chamber, tunnel and riser) is concerned it matters little what happens after the exit from the riser, it is all one and the same from the structures viewpoint (excluding obvious things like obstructions, restrictions etc etc).

It was simply an easier method for my purposes for this time than building a cob with plenum etc.



It is temporary, just for this season. I added the bell afterwards (works a real treat). The burn tunnel is behind and 'in' the little brick structure supporting the barrel, so the exhaust is quite a few inches above it (as is the barrel which 'rests' on the tunnel)