Re: 'Lofty' Air conditioning

["bone_pyro" <andy@xxxxxxxxx>]

I do not think that there would be anything instrinsically wrong with
a unit where both the evaporator and condenser were contained in the
same housing, it is quite a common practice for ducted sytems.

The only thing I would be wary of with a system like this one (and I
have never seen it), would be noise and vibration. With this system
the compressor will be mounted in your attic space, and this presents
the possiblitly that vibration will be transmitted to the building
fabric in your attic, and possibly resonate across the whole attic.

The other thing that needs considering, (and I guess the supplier
manufacturer would be able to give the details), is what size / length
of ductwork is permissable. Generally the more ductwork, the more
static resistance, and possibly less airflow. Get it wrong, and this
will serioulsy affect performance of any unit.

As I said I have never seen this unit, but that is one aspect I would
be keen to see operational before I committed to such a sytem. Do they
have installations which you can go and inspect prior to purchase?

Also, check out the capacity of the unit, and perform a heat load
calculation on your property beforehand. For general home / office use
I would use a reckoning of somewhere between 125 - 150 W / sq. Metre,
although for rooms that do not get any solar radiation (direct
sunlight) you could drop as low as 85 W /sq. m





--- In ukha_d@xxxxxxx, "kw1816" <kw1816@y...> wrote:
> Anyone have any experience of the 'Lofty' air conditioning system ?
>
> http://www.elliotts.co.uk/aircon/lofty_temp.htm
>
> I remember seeing them at the homebuilding and renovating show and
> thought it looked interesting, now I'm seriously thinking about air
> conditioning I'm wondering if it's worth investigating.
>
> I can't help thinking that a combined condenser and evaporator can't
> be that great .....
>
> Ta
> Kevin.