For that matter, if you dig down a few feet (ok more than a few, but
not much more) there's tons of steady-temp material
(dirt,rock,water,etc) waiting to take on your extra heat in the summer
or provide you with heat in the winter. So while you're at it, throw a
well or two down and run a pump. And viola you have geothermal HVAC
for which your only continuing expense is running and maintenance of
your water pump.
Ok so maybe air ducts are easier and cheaper for your application.
Don in CT
On Fri, Jan 23, 2009 at 12:21 PM, Jason Bleazard <dml@bleazard.net> wrote:
>
> jon@dakota-truck.net wrote:
> >
> > I'm in the process of designing an office for myself down in the
> > shop, and part of the office will be an air conditioned server closet.
> > I haven't worked out all the details yet, but I definitely plan to run
> > ductwork through the wall of the building so that I can shut off the
> > A/C unit during the winter; once the outside temp drops below 50-60 F
> > or so, the only cooling energy required would be a fan to move the air.
>
> This sounds like a potential PIC project. You'll need a couple of temp
> sensors to monitor the inside air, outside air and computer temps.
> Check against a desired setpoint, and decide whether to use outside air,
> how much to blend it with the inside air, or to switch on the A/C with a
> relay. That way, you won't have to constantly worry about it, and if we
> get a cool night during the summer it can automatically switch over to
> outside air.
>
> --
> Jason Bleazard http://drazaelb.blogspot.com Burlington, Ontario
> his: '95 Dakota Sport 4x4, 3.9 V6, 5spd, Reg. Cab, white
> hers: '01 Dakota Sport 4x4, 4.7 V8, Auto, Quad Cab, black
>
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