[TheForge] Blower possibilities

[Ben Barrett]

That first one, the 4" centrifugal, is about 106 CFM, check
http://google.com/products?q=centrifugal+fan&btnG=Search+Products&show=dd
for state-side suppliers and price comparisons... I see you are UK
though ;)  so maybe
http://google.co.uk/products?q=centrifugal+fan&btnG=Search+Products&show=dd
Sorry, I don't know much else, aside from that the forge will have
some back-pressure, enough to make many simple fans run hard under the
load.  If you don't put a variac or pwm controller on your fan
(depending on motor type & reqts), you can use an in-line physical air
gate which is common -- although venting the excess might be a good
idea with certain fans.  In-line is a nice idea, and if you have it
far enough from your heat then many simple plastic fans may suffice,
although I think you'll want something with some oomph.  My guess is
that if the fan uses 30-50+ watts it is enough to run a small forge,
above that scales up.  10W might even be enough if it is efficient, I
dunno.

~ben


On Jan 17, 2008 2:19 PM, Rich Maynard <rich at maynard.org.uk> wrote:
> What do you think about this sort of thing as a forge blower fan?
>
> http://www.screwfix.com/prods/98482/Heating-Cooling/Ducting/Manrose-In-Line-
> Centrifugal-Fan-4
> http://www.screwfix.com/prods/41379/Heating-Cooling/Extractor-Fans/Centrifug
> al-Inline-Shower-Fan-Kit-240V-100mm
>
> or even
>
> http://www.screwfix.com/prods/11097/Heating-Cooling/Extractor-Fans/Manrose-S
> tandard-Bathroom-Extractor-Fan-4
>
> That last one is about $20...
>
> Rich
>
> Richard Maynard - Artist Blacksmith
> The Forge, Much Hadham, Hertfordshire SG10 6BS
>
> rich at muchhadhamforge.co.uk
> www.muchhadhamforge.co.uk
>
>
> Richard Maynard - Artist Blacksmith
> The Forge, Much Hadham, Hertfordshire SG10 6BS
>
> rich at muchhadhamforge.co.uk
> www.muchhadhamforge.co.uk
>
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