[RE-wrenches] More Summer cooling

[R. Walters]

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 - dana at solarwork.com
>
> V - 970.626.5253
>
> F - 970.626.4140
>
> C - 970.209.4076
>
>
>
> From: re-wrenches-bounces at lists.re-wrenches.org [mailto:re-wrenches- 
> bounces at lists.re-wrenches.org] 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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