[TheForge] burners and other addictions

[Mike Porter]

Frosty,
I gots to mull that idea over for a while (somewhere between a week and five 
years, maybe :) I'm not disagreeing, it's just a lot to think about, all at 
once like!

The only thing missing up front, is that recouping heat from incoming air 
also serves to keep an outer wall cooler, and therefore less of a thermal 
stress on outer insulation. Of course that is only a concern with portable 
equipment (another one of my addictions).

Portable equipment is not fundamentally about working on jobsites and doing 
demos for me. It is really all about helping young artists to keep their 
greedy landlords in check, but that is a whole different conversation...one 
that is already written up for book five.
Mikey
----- Original Message ----- 
From: "Jerry Frost" <frosty at customcpu.com>
To: "Sponsored by ABANA" <theforge at mailman.qth.net>
Sent: Wednesday, March 15, 2006 10:08 PM
Subject: Re: [TheForge] burners and other addictions


> 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
>>
>
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