[TheForge] coal forge exhaust system

[David E. Smucker]

Paul is right on with the quickdraft hardware as an example.  Way back in
the late 70's we use QuickDraft supplied equipment to transport thin strips
of foil scrap from edge trim on foil mills at Alcoa's Davenport Foil Mill.
All gone today, but it really worked well.  

Dave Smucker
Brasstown, NC

-----Original Message-----
From: theforge-bounces at mailman.qth.net
[mailto:theforge-bounces at mailman.qth.net] On Behalf Of Paul Sperbeck
Sent: Monday, November 18, 2013 1:49 PM
To: Blacksmithing List Sponsored by ABANA
Subject: Re: [TheForge] coal forge exhaust system

We in the blacksmith community tend to throw the term venturi around quite a
bit, when more often then not we are referring to things approximate
venturis.

Many gas burners for forges reference venturis, but to very few of them look
like this:

http://www.duncanshearer.co.nz/kilnplans/burners/venturi/venturi%20burner-01
.jpg

So when I referred to a venturi vent system I had in mind something more
like this:

http://www.quickdraft.com/products/venturi-exhauster

Which is more than a small pipe stuffed into a bigger one...

In our northern climate, we need to extract the noxious stuff with out
freezing ourselves to death. By using the quickdraft as a model, and drawing
outside air to supply the fan the heat loss in the shop can be held to a
minimum.

paul
--
"This is only temporary, unless it works."
--Red Green

No trees were killed in the generation of this message, but a tremendous
number of electrons were terribly inconvenienced

Try to notice the thing that happened just before the thing you didn't want
to have happen happened!

If you are using violence and it does not work, You are not using enough.

Life's tough, pilgrim, and it's even tougher if you're stupid. - John Wayne

Resistance Is Not Futile!  It's voltage divided by current.

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