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-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
John Rodgers
Sent: Saturday, May 14, 2011 12:23 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Rooftop A/C Experiences

  Swamp Coolers really only work in very dry climates. I had one in my house
in New Mexico and it really did a job cooling the place down. But it did so
by evaporative cooling - which adds moisture to the air. In a dry climate it
works really great, and is cheaper to run than an air conditioner. The
principle of the thing is that a mist of water is sprayed between a fan and
a mesh of some type (in my case wood fiber sandwiched between two plastic
screens) The fan blows the mist into the fiber, and once wet, as the air
from the fan passes over the moist fiber the moisture evaporates, thus
cooling the air as it passes through. This process both cools the air inside
and raises the moisture level as well.
In a very dry climate, this is very desirable. However, in a warmer climate
it's horrible. Makes the air so wet and muggy you cannot possibly get cool.
For all around use in a vehicle have a working AC unit is the solution. But
for homes - Swamp coolers in dry climates, AC units for wet muggy climates
like the Deep South.

John

John Rodgers
Clayartist and Moldmaker
88'GL VW Bus Driver
Chelsea, AL
Http://www.moldhaus.com

On 5/13/2011 2:53 PM, Cunegonde wrote:
> I have a small generator, and I also have built an A/C carrier bracket for
the passenger window. This is all fine when parked (and I try not to spend
much time in places where A/C is a daily use item). However, my cooling
(burning?) need is while driving.
>
> I just contacted the Vintage Air people about Vanagon installation. As for
evaporative cooling, any listmembers familiar with swampy.net units, or
recommendation for better?
>
> Cut hole in roof vs. tear apart dash. Hmmm.
>
>