Re: [Phys-l] cooling hints

[Bernard Cleyet <bernardcleyet@redshift.com>]

On 2011, Aug 24, , at 13:27, John Clement wrote:

> Now this makes a bit of sense!
>
> But what if the air entering the AC is 90F.  I would assume the air coming
> out of the vents would be much lower that 15F below 90, but probably not
> 55F.  So here is a case where the actual fact has been translated to a
> different context where it is not appropriate.  In other words under normal
> operation the air is only chilled about 15F.  Normal operation would be
> input at slightly above comfortable room temperature.  As I remember one AC
> man claimed the air coming out of the vents should be around 60F anytime the
> system is on.  They often use a thermometer or an educated hand to check
> this.


  I have a refrigeration type dehumidifier.  If the incoming air temp is too low it ices up.  Depending on the wind speed, I'd expect the exit temp. close to zero (C).  There are models (IIRC) that include an ice detector and therefore cycle.  

Tho it's not mounted** I'll cheque my window one.

** sits on the spare bed except for the two or three weeks of heat wave (indoor > 25C

bc found great for electrostatic demos, and a hot air wuss.


p.s. Stuck it in the window -- 5=>7 C out and 17 in this evening.