I've just heard bad things about any active slab cooling. If the
humidity is high enough and your slab is cool enough, you will hit
the dew point and have condensation.
If you have even throw rugs, you will start growing mold.
Air Conditioning is not just cooling, its dehumidification too.
Maybe the solar chillers could be used to supplement a heat pump
system on a residential system?
www.osti.gov/bridge/servlets/purl/840264-Jp30yy/native/840264.pdf
I just thought of something to add to the previous list of ways to
help cool a home:
Share walls & cooling systems (like apartments, duplexs, etc)
Ray
On Aug 20, 2008, at 4:53 PM, Dana wrote:
I moved away from the humidity [ to SW Colorado] and yes we open up
at night and close down during the day.
OK how about a small chiller that cools the slab during the day.
There are solar absorption chillers in the UL stage that I have
heard about [not seen or used] recently.
Thanks -
Dana Orzel
Great Solar Works, Inc
www.solarwork.com
E - [EMAIL PROTECTED]
V - 970.626.5253
F - 970.626.4140
C - 970.209.4076
From: [EMAIL PROTECTED] [mailto:re-wrenches-
[EMAIL PROTECTED] On Behalf Of R. Walters
Sent: Wednesday, August 20, 2008 4:33 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Summer cooling
Hi Dana;
In-floor heating of a super insulated building is a great idea. In-
floor cooling however, has some serious condensation problems and
is not a good idea.
In earth Air duct systems can harbor mold and Legionaries' disease.
Here in Northern New Mexico we use adobes (lots of thermal mass)
and open up to the cool night air. When I lived through Texas
summers, you either ponied up for AC, went to your mountain home,
or suffered.
You stated the first 2 steps:
super insulate & increase thermal mass.
Next ?? :
Reduce your cubic footage of air conditioned space.
Reduce east & west glazing
Grow overhanging deciduous trees on the East & West
Use Fans
Use some evaporative cooling if possible
Use small High efficiency AC units (Sanjo?)
Raise thermostat
Use geothermal heat pumps
Migrate?
?........
Ray Walters
On Aug 20, 2008, at 4:03 PM, Dana wrote:
I have always wanted to do a super insulated house design that had
a large central masonry mass or floor slab with heat tubing that
you could cool in the summer during the nighttime and solar heat in
the winter with solar. Or an earth tube air duct system that you
could pull cool night air through that would cool the slab. I built
a Passive Annual Heat Storage home 16 years ago that kept the house
at 68 F during the summer in western Washington. I was very
comfortable. Any thoughts ?
Thanks -
Dana Orzel
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R. Walters
Solarray.com
NABCEP # 04170442
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