Re: O/T - AirCon (yes, even at this time of the year)

[geraint@xxxxxxx]

Is this the same deal though with the split air-con units.

I thought that they pull the air from the outside and then the
ducting would feed straight into the bedroom with no inlet or outlet
occuring in the loft as such ?

What do you think ?

--- In ukha_d@y..., "Keith Doxey" <ukha@d...> wrote:
> Just given this some more thought and can see a MAJOR problem.
>
> Consider a car heater in the middle of winter.
>
> If you set it to recirculate the air rather than drawing air into
the car
> from outside, the car will heat up quicker. Initially everything
will be at
> freezing but after the first bit of air has warmed and raised the
the car to
> say 5C the air going back into the heater will be 5C so the air
coming out
> will be warmer than if it was still entering at 0C.
>
> The converse is true with Aircon. When you first start it running
in a
> normal room their is cool air coming out of it because hot air is
going into
> the chiller. As the room cools you get cool air entering the
chiller and
> COLD air coming out.
>
> If the unit is in the loft ( a location that gets unbearably hot
during the
> summer ) you will do well to get cool air from the outlets and the
unit will
> be working VERy hard to achieve this. You need to arrange for the
air intake
> to be taken from the room being cooled so that the chiller will
have less
> work to do as the room temperature drops. Eventually it will get
down to
> temperature and shut off.
>
> The duct with inline fans will be ideal. I was considering the
same thing so
> that I would pull the cold air down the tube rather than just
relying on the
> aircon fan to push it down the tube.
>
> Keith
>
> -----Original Message-----
> From: geraint@a... [mailto:geraint@xxxxxxx...]
> Sent: 08 November 2001 22:01
> To: ukha_d@y...
> Subject: [ukha_d] Re: O/T - AirCon (yes, even at this time of the
year)
>
>
> Well what I was wondering was if I could use like a inline bathroom
> extractor fan in the pipework which would sort of "push" or
"pull"
> the cold air from the ducting, hopefully creating a bit of a
> circulation issue. Do you think that would be a go-er ?
>
> See what you mean about the temperature sensor though, again mine
> would be similar. i.e sensor in the loft, actual cooling in the
> bedroom.
>
> Going to have to get creative with this. Maybe find one thats more
> mechanical on the controls, and then just x10 it with an AD10 or
one
> that I could "hack" the main control board and install into
a box
> locally in the bedroom.
>
> Cheers
> Geraint.


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