[TheForge] propane forge

Sat Aug 31 20:57:00 2002

I dont think a blown forge uses less gas than an atmospheric one, you can
only get so many BTU's out of a certain amount of gas and at the correct
stoichiometric ratio thats all you can get, propane is quite hard to mix
properly with air and that has a bearing on the heat output so a blower may
help some there but some of the new mongo burners are very good at mixing
also.

 (sometimes people compare gas pressure used on their burners but they
hardly ever list the jet size, atmospheric forges use very small jets and
higher pressure, blown forges use larger orifices and low pressure, so some
say they use less gas because the pressure is lower, but the flow is the
same or higher.)

----- Original Message -----
From: "Lynn Emrich" <[email protected]>
To: <[email protected]>
Sent: 01 September, 2002 8:31 AM
Subject: Re: [TheForge] propane forge

> I'm not sure why someone would choose a naturally
> aspirated over a blown forge. The blower reduces the
> gas usage quite a bit.
> Also, I don't see a good reason to make a small intake
> for the gas. I use a 1/4" pipe supply. I suppose that
> the high pressure would jet the gas more into the
> forge but the larger opening would seem to mix the gas
> before it enters the forge body.
> Jay has been on this mail list for several years and
> his pressure regular costs less than I paid at the gas
> company.
> BTW, my guage broke over a year ago and I haven't
> gotten around to replaceing it so I guess it's not
> really necessary for me.
> Lynn
> http://www.geocities.com/theatre_weapons/index.html
>
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