[TheForge] re:burner question

Thu Dec 4 11:23:00 2003

John Emmerling asks
How many burners on a 12"l  x
> 10" dia pipe forge using 2" kaowool?

     Assuming that the 10" diameter is the shell size and not the finished 
ID: With any gas burner capable of achieving a neutral flame, that would be one 
burner at 3/4" size or two at 1/2" size; Size being figured from the mixing 
tube ID, rather than the nozzle. Nozzle sizes can vary a lot, but mixing tube ID 
will become the cental factor in burner equations. Also, this is the pipe 
callout or nominal size--not the actual ID. I would recommend two smaller 
burners, because the interior diameter is going to be too small for a happy result 
with the larger burner.
    The next logical question would be how to space them; they should be not 
quite equally spaced:
Exhaust edge--3 1/2"--burner--5"--burner--3 1/2"-- exhaust edge.
Aiming is a matter of personal preference and the subject of endless debate. 
Let's not go there just yet :o)
Mikey 
  
    
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