[TheForge] Gas forge burners

Thu Apr 8 20:07:01 2004

I've seen various types of mixing devices on forced air burners, but I
thought that venturi burners were supposed to have a smooth air flow (Does
laminar air flow sound right?).  The best way I can think of to find out is
to try it.  I'd love to have the computing power to run an accurate
simulation of something like that, but getting my hands dirty (and sometimes
singeing my beard) is the only sure way.  So far, though, I really don't see
any reason to mess with it.  I'm getting very satisfactory performance with
my current setup, and I'm reluctant to change.  Remember Murphy's Law: Any
new solution causes new problems.

Mike Murphy

-----Original Message-----
From: [email protected] [mailto:[email protected]]
On Behalf Of GHS
Sent: Thursday, April 08, 2004 6:07 PM
To: [email protected]
Subject: Re: [TheForge] Gas forge burners

A little spoiler as the HVAC guy suggested is a common thing on heating 
units to adjust the air mixture by messing with the venturi effects 
ability to entrain air.

I never considered it as a mixer.

Mike Graf

Bob Ehrenberger wrote:

> I recentlly hosted a BAM training class.  For this we used gas forges
> instead of coal because we wanted to concentrate on the forging process
and
> not on fire management.  The gas forge used is one built in a BAM workshop
3
> or 4 years ago.  It has venturi style burners and is a little on the
whimpy
> side and only somes up to temp properly if I put a fire brick inside to
> raise the stock and reduce the volumn to be heated. One of our students is
> in heating and air conditioning.  He suggested adding a pin to the tube
> between the oriface and the forge to add to the mixing process of air and
> gas.
> 
> There has been a lot of talk on this list about burners.  Lately the use
of
> flares on the end has been discussed.  I don't remember any talk on things
> to aid in the mixing.  Have any of you tried this and has it made a
> difference?
> 
> Robert Ehrenberger
> Shelbyville, Mo.
> 
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