Yep, again, physics is physics.
Wilton
----- Original Message -----
From: "Joel Cairo via Mercedes" <[email protected]>
To: <[email protected]>
Cc: "Joel Cairo" <[email protected]>
Sent: Tuesday, June 28, 2016 10:45 AM
Subject: Re: [MBZ] Swamp cooler
Physics, Bunky, is the key to understanding life.
The hot dry air evaporates water, which absorbs heat (the heat of
vaporization) as it makes the transition from liquid to vapor, thus
cooling the air from which that heat is extracted. You can get
considerable temperature drop in the air, it is no different from what
happens inside the AC system in a car where the refrigerant evaporates (in
the evaporator!) and thus cools the air flowing over the heat exchanger.
In an AC system the refrigerant is contained in the system; whereas, in a
swamp cooler the water evaporates from the screen.
--JC
On 6/28/16 10:41 AM, Andrew Strasfogel via Mercedes wrote:
OK, so the NM AZ people say "you don't feel the 100 degrees because it's
a
DRY heat". So by humidifying the 100 degrees it somehow feels cooler -
just like Washington DC in a heat wave?
On Mon, Jun 27, 2016 at 6:24 PM, Scott Ritchey via Mercedes <
[email protected]> wrote:
Swamp coolers were the only cooling we had in the high desert of NM and
CA,
where I lived for 2 years and 5 years, respectively. They actually do a
good job with low energy consumption providing (1) the ambient relative
humidity is very low (like desert), (2) you start daily cooling long
before
you need it, and (3) the "pads" are fully wet before you start the big
fan.
Don't forget that nighttime temps get quite low in deserts, even in
summer.
But for most parts of the US, a swamp cooler is useless. The big fan is
the
best answer: instant relief.
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--
--BB
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