This is wonderful! I was wondering you had any more information on this one? I was thinking about building something very similar but was wondering if you had any ratios or data for this kind of burner? I was initially thinking that the area of the opening (nozzle, nozzletts, blade?) should be 1 to 1.25 the area of the tube but this one looks like this one has a larger ratio?
I was also wondering what happens if you 'force' air into one of your burners. I was was thinking having a plenum around the top. I am guessing it would blow the flame out? or could it make your already impressive burners burn hotter?
Sorry but one more if you will indulge my exuberance, but the one with the nozzle cast into the refractory, did you reinforce that at all? I would be worried that it would crack in the area around the nozzle?