Hi Ray,
I hadn't heard about condensation from infloor cooling but makes
sense that it could happen.
Most of the infloor cooling that you are mentioning is from a
regular AC unit not say using solar thermal panels at night?
thanks,
jay
On Aug 20, 2008, at 3:33 PM, R. Walters wrote:
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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