[TheForge] coal forge exhaust system

[Paul Sperbeck]

I think that you would have a real problem with the temperatures and the 
soot in the coal flue messing up the fan.

If you need to exhaust  without a stack I think that you might be better 
off with a venturi extractor.

Use a fan drawing outside air to feed a nozzle injecting a high velocity 
air stream into a lager stack and use the vaccum produced to create a 
stack draft.

Perhaps you could build something like Jim Ribordys forge hood, but 
allow the pipe through the roof to move up as well. This would give you 
the stack you need when you are forging and allow the stack to lower 
down below the roof line when you aren't working.

paul

On 11/18/2013 07:43 AM, Paul N wrote:
> Has anyone on the list tried using one of these (or similar) ducted exhaust systems for a coal forge?
> http://www.pexsupply.com/Fantech-FG8-FG-Series-Round-Inline-Exhaust-Fan-8-Duct-461-CFM
>
> I'm finally setting up a permanent shop, and was hoping not to have to run a stack high up above my roof ridge line. If I can run a forced exhaust system out my gable wall, I can save some money, as well as avoid having a tall stack on the roof.
>
> These things are all for sale all over the place, with some pretty significant CFM numbers. I'm concerned about the temperature as well as the volume of air moved. I don't think I need a whole lot of static pressure, but I do want to be able to exhaust coal fumes without starting the place on fire.
>
> Thanks,
> **Paul
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paul
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