On 7/4/2014 11:34 AM, Tim Wescott wrote:
On Fri, 04 Jul 2014 04:06:11 -0400, rickman wrote:

On 7/4/2014 12:57 AM, Tim Wescott wrote:
On Thu, 03 Jul 2014 22:28:23 -0400, krw wrote:

On Thu, 3 Jul 2014 17:00:16 -0700, "Pico Rico"
wrote:


"RobertMacy" wrote in message
newsp.xif3so2o2cx0wh@ajm...
On Thu, 03 Jul 2014 16:29:47 -0700, Pico Rico

wrote:


"RobertMacy" wrote in message
newsp.xif3f3zo2cx0wh@ajm...
...snip...
So my question is WHICH way is this !@#$#@ system designed for? UP
or DOWN air in the summer?

it depends if you have air conditioning.

again which way? for what reason? elaborate?

heat rises. If you have ac, you want to push the warm air down so it
can become ac'd. If you don't have ac, you might as well leave the
warm air up there were it will be less noticed.

But you can cool to a higher temperature if you help the convection
off your skin. Add in evaporative cooling and a breeze is a big win,
at least in small rooms, like a home.

We have air conditioning which keeps the house at 78, and a way
undersized room dehumidifier which we set up in the master shower, turn
on the circulating fan in the furnace, and basically slowly and
inefficiently dry out the whole house.

It makes a huge huge difference how hot it feels -- and we're in
Oregon,
where everyone is a humidity wimp.

Do you realize the dehumidifier is just an AC unit where the heat is
exhausted back into the room? You could do the same thing by running a
small space heater which would make the AC run more often which does a
much better job of taking the humidity out of the air. Actually, I've
never seen a house with AC that still had high humidity, but then I'm
not in the Pacific northwest.

Our AC is a heat pump which does not remove the moisture from the air --
it just cools it. Don't ask me how -- for all I know they have the thing
arranged to do it on purpose.

You are smoking dope on this one. A heat pump *is* an air conditioner.
Run it one way in the summer and use a reversing valve to swap the
coils in the winter to cool the outside and warm the inside.

When running as an AC it condenses water on the inside coils and pumps
that water outside... or it *should*. It is possible (although I've
never heard of doing this) that they are evaporating the water back into
the house like they do in a fridge. But that would be crazy.

BTW, in the winter the outside coils condense moisture too, but as ice.
They need to run in AC mode to melt the ice and must run backup heat
to keep the air warm while doing so.

--

Rick