[TheForge] burners and other addictions

[Jerry Frost]

Recouping heat is right. There are different ways to recoup it though; to 
the intake air is just one of them.

The recuperative Wall furnace keeps the fire in the box longer so there is 
less fuel requirement. It also consumes more oxy while it's doing it. WALL 
is the operative word in the design.

The basic unit is a double wall furnace, chamber within a chamber separated 
by a gap. The burner nozzle protrudes into the outer furnace wall and fires 
across the gap through a larger port in the inner wall. Exhaust ports in the 
main furnace chamber only go through the inner wall.

As the burner blast fires across the gap and through the ports in the inner 
wall it creates a low pressure zone in the gap. The low pressure draws 
burning gas from the main chamber through the exhaust ports into the gap.

The hot exhaust gasses heat the inner wall from the outside as the main 
chamber is heated by the burner blast. As the exhaust gasses pass back 
through the inner wall with the burner blast it consumes any free oxy in the 
burner blast.

The outer furnace wall is insulated and I plan on coating it's inner face 
with ITC-100 to further increase efficiency.

For a small scale version like a personal forge I intend to make a gap 
between the furnace walls around the doors. I don't know where else to put 
them in a small unit where the exhaust ports wouldn't draw fire from the 
chamber before it was done.

To further recoup heat I plan on using the infloor exhaust system in my shop 
to evacuate the hood and heat my floor.

Frosty
-------------------------------
If it ain't forged
it ain't real.
Wrought iron is.
The FrostWorks

Meadow Lakes, AK.

http://www.artmetalradio.com/

From: "Mike Porter" <michael.a.porter at comcast.net>


> Now, you've left me behind Frosty,
> What kind of recuperation do you mean if not recuperating heat? How do you 
> recuperate heat if not by transferring it to incoming combustion air?
>
> Mikey
>