[TheForge] burner question

Andy Vida [email protected]
Mon Dec 1 13:20:12 2003


Dave Brown wrote:
> 
> At 11:38 12/01/03, you wrote:
> > > But I've always
> > > been under the impression that the bell reducer improved the flow of the
> > > entrainment air so that it actually dragged in more air that way.
> >
> >         Well, this is an interesting thing.  When NJBA built their
> >         gas forges, we built no flare into the burner.
> 
> Andy, are we talking about the same thing?  Your use of the word "flare"
> makes me think you are talking about the outlet of the mixing tube as
> opposed to the bell reducer used at the input end of the tube.

	My mistake, I was thinking of the exit flare.  Ours definitely
	have reducers.
> 
> >         Tapering down as the gas travels, or opening up?
> 
> First the jet end has a bell opening which tapers rapidly down to the pipe
> size.  Then the mixing pipe is usually lightly tapered all the way to the
> outlet.  I have several of these in different sizes laying around the shop
> and they are all like this.

	Never mind.  Brain gas.  Sheesh.