[CQ-Contest] Shack Air Flow

[David Fuller]

I have a large skylight that runs from the 8ft ceiling to the pitched roof
through the attic.   I put in a vent up there in the side of the skylight
tube into the attic and ran small flex duct  over near the attic vent which
is about 25 feet from the shack.   There I installed a box enclosed exhaust
fan and wired it with a simple cooler thermostat in the shack.   It comes on
automatically and pulls the hot air out of the room.  This works well
because I barely hear the fan noise in the shack.

For more volume you could use something like a swamp cooler fan box and
exhaust the air outside.  Grainger is a good source for various industrial
fan systems.   That is where I got mine.

They also make cooler updraft vents that vent from the room to the attic
space.   You could put large fan exhaust on the attic space and it would
quietly draw air out of the room though the automatic updraft vents.  The
vents will self close when the fan is off.

-Dave NN5K

On Sun, Nov 23, 2008 at 10:48 AM, K5RC <tom at k5rc.cc> wrote:

> I went to single-band amps earlier this year and mounted them in a closet
> next to the shack with the front panels mounted in the wall. I put a
> bathroom exhaust fan in the room venting up into the ceiling. The fan is
> noisy, but, compared to the noise of 6 amps, it is not a problem. I had to
> put a small window air conditioner in the window in the closet for contests
> during the summer. Otherwise, leaving the door open works for keeping the
> room at an acceptable temp. Since my shack is built inside the garage, the
> open closet door gets cool mountain air most of the time and cold air in
> the
> winter. Elegant but simple solution for me, mostly to get rid of the noise
> and heat inside the shack and hiding hundreds of feet of cabling.
>
> Tom Taormina, K5RC
> Virginia City NV
> -----Original Message-----
> Message: 6
> Date: Sat, 22 Nov 2008 16:40:02 +0000
> From: "K1TTT" <K1TTT at ARRL.NET>
> Subject: [CQ-Contest] shack air flow?
> To: "YCCC" <yccc at yccc.org>, "reflector cq-contest"
>        <CQ-Contest at Contesting.COM>
> Message-ID: <C2B7926912E8418393EBA3AEFEA16B7B at k1tttibm>
> Content-Type: text/plain; charset=US-ASCII
>
> Normally in m/m contests we end up with windows open and a big box fan
> running to keep the temperature down in the shack.  I am looking for
> something maybe a bit more elegant.  Has anyone used those small high
> velocity ducts to either blow in air or as exhaust ducts?  I am thinking
> that one in each corner sucking out the hot air may be best, then I could
> blow it down into the crawl space or upstairs to reducing heating need
> during cold weather contests.  This would have to go above a drop ceiling
> and preferably not be very noisy.
>
>
> David Robbins K1TTT
> e-mail: mailto:k1ttt at arrl.net
> web: http://www.k1ttt.net
> AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net
>
>
>
> ******************************************
>
> _______________________________________________
> CQ-Contest mailing list
> CQ-Contest at contesting.com
> http://lists.contesting.com/mailman/listinfo/cq-contest
>