[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.