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Re: [APD] Canopy Cooling
Yes, they all say they are measured that way -- even
And yet, every now and then you'll see a model from a maker
that has such incredible specs, that is so far beyond all
the others, you'll wonder why the heck they don't make all
their fans the same way and take over the whole darn
I'm inclined to believe Panaflo specs. They never tried to
lie to me -- at least that I know of ;-) . Can't say the
same for some of the others.
Still, I personally would never want to use an ultra-high
speed tubeaxial fan. There is almost always a better
solution than spinning a tubeaxial that fast. Bigger fan,
more fans, better airflow design (in the computer or the
aquarium hood or whatever). . .
Otoh, I might do it just to see how it works ;-) Why not?
--- Jerry Baker <jerry at bakerweb_biz> wrote:
> S. Hieber wrote:
> > A 6.7" (175 mm) fan can surely deal with that much
> > and hum along in the 47 db neighborhood. But I'm
> > to say that, if a 4" fan performs that way, buy all you
> > get your hands and expect to make a fortune -- you
> > have the exception to the laws of physics or at least a
> > serious warp in the fabric of space and time? Otoh,
> > they only measured sound in a particular bandwidth or
> > ten or 15 feet away, or maybe it's not a ground plane
> > measurement, or who knows . . . ?
> The Panaflos are measured at 1m on the intake side
> mounted in an
> antiechoic chamber. You can read more than you ever
> wanted to know about
> them here:
> Jerry Baker
> Aquatic-Plants mailing list
> Aquatic-Plants at actwin_com
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