[TheForge] Traveling Gas

[Dan Brewer]

I forgot to mention that a burner that is working correctly Side arm, Reil
or Porter style are cold to the touch at the inlet side.  The expanding gas
will almost freeze the burner while the other end is doing its best to melt
off.

Dan in Auburn

-----Original Message-----
From: theforge-bounces at mailman.qth.net
[mailto:theforge-bounces at mailman.qth.net] On Behalf Of Jerry Smith
Sent: Thursday, February 15, 2007 7:00 PM
To: Sponsored by ABANA
Subject: RE: [TheForge] Traveling Gas

Dan,

I have noted this information 

Jerry
--- Dan Brewer <danqualman at gmail.com> wrote:

> If your burner is built correctly.  That is the jet
> is pointed generally to
> the center of the burning tube .  You burner length
> is close to the 9:1 rule
> ( the length of the burner tube from the front end
> of the air inlet holes is
> 9 times the inner diameter of the burner tube) your
> jet is close to the
> correct size and you have a flare or a nozzle on the
> burner .  If these
> conditions are met your burner will work and the
> flame will not travel back
> up the burner tube.  But If your jet is fouled or is
> pointed to the side of
> the burner tube, You have insufficient air flow into
> the burner or the
> burner length is too short or too long you might get
> a burn in the burner
> tube.  The flame should sit just inside the
> flare/nozzle.  I like the nozzle
> better because it impinges on the flame just a
> little and provides a
> secondary ignition point when it gets hot.  The
> flare does the same thing
> but the flame doesn't touch it as much.  Both
> provide a place where the
> mixed gas can slow down and burn with out blowing
> out.  The porter burner is
> a bit more work to make but is a lot more
> controllable than the side arm or
> Reil type burners.  All of the burners benefit from
> a choke to help the
> burner start when cold and to do a little fine
> adjustment when u[p to temp.
> 
> Dan in Auburn
> 
> 
> 
> -----Original Message-----
> From: theforge-bounces at mailman.qth.net
> [mailto:theforge-bounces at mailman.qth.net] On Behalf
> Of Steve Smith
> Sent: Thursday, February 15, 2007 6:00 PM
> To: Sponsored by ABANA
> Subject: Re: [TheForge] Traveling Gas
> 
> Jerry,
> 
> Try the existing burners first (Reil, Porter, etc.).
> The work *really* 
> well, and I don't think they will work as well if
> you put screen in 
> them. There is no problem in these burners with the
> flame climbing the 
> tube, the flame is controlled by the flare at the
> business end.
> 
> Steve
> 
> Jerry Smith wrote:
> 
> > What kind of screen was it and if it isn't
> hardware
> > store stuff, we can I buy some?
> > 
> > Jerry
> > 
> > --- Grover Richardson
> > <grover.richardson at gtri.gatech.edu> wrote:
> > 
> > 
> >>The screen performs two purposes.  One is to mix
> the
> >>gas, the other is a
> >>fire block.  A third thing that is generally
> >>unnoticed is that the screen
> >>also keeps infra red from getting back to the
> >>orifice.  I have a plumbing
> >>pipe version of a burner and I ran it a few times
> >>without a twist of shim
> >>stock inside it for a mixer.  There was enough
> infra
> >>red in the forge to
> >>ignite the flame at the orifice.  A fun time was
> had
> >>by all until the burner
> >>was turned off<G>.
> >>
> >>-----Original Message-----
> >>From: theforge-bounces at mailman.qth.net
> >>[mailto:theforge-bounces at mailman.qth.net] On
> Behalf
> >>Of Bruce Freeman
> >>Sent: Thursday, February 15, 2007 2:26 PM
> >>To: theforge at mailman.qth.net
> >>Subject: Re: [TheForge] Traveling Gas
> >>
> >>Lynn,
> >>I don't understand your question.  Who says it
> would
> >>not be a good idea?
> >>Bruce
> >>NJ
> >>
> >>
> >>>>>langfarm at together.net 2/15/2007 2:18 PM >>>
> >>
> >>Hello
> >>
> >>Why would it not be a good idea to add a screen,
> as
> >>metal window screen
> >>, between the mixing chamber and the burn area?
> This
> >>is used in the
> >>boating world to keep flames from going back down
> >>the fill pipe..
> >>
> >> 
> >>
> >>Lynn
> >>
> >> 
> >>
> >> 
> >>
> >> 
> >>
> >> 
> >>
> >>Happens all the time.  The mixture just has to
> move
> >>faster than the
> >>flame front so the fire doesn't travel  back up
> into
> >>the mixing chamber.
> >>
> >> 
> >>
> >>CraigS
> >>
> >>
> >>
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> > 
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