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Posted by Larry Jaques on April 21, 2006, 4:23 pm
Please log in for more thread options On 21 Apr 2006 09:27:53 -0700, with neither quill nor qualm,
stans4@prolynx.com quickly quoth:
>You need R.H. of at most 15% to get an evaporative cooler to work well.
> I can get a drop of about 20 degrees with a portable unit I've got at
>that R.H., at 20% and above all I get is hot, wet air. Really good
>only for the Southwest where the humidity is low for most of the hot
>season. It evaporates water into the incoming air, so it increases the
>R.H. inside, so, yes, there's a good chance it'll start equipment
>rusting. Insulation, paint, partitioning and/or an exhaust fan(s)
>located high up will work better.
I worked installing a/c units on new pickups in Phoenix, AZ in '74.
The shop had 4 large swamp coolers. One hot and very dry day, it was
118F outside. The swampers held it down to a nice 108F inside. Ugh!
.-.
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> moisture into the air which would then have to be removed by the A/C