cooling technologies [RE-wrenches]

[Peter Duchon]

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Hi Todd,
Now that's the ticket!  Do you feel this technology would work more or less
everywhere?  Would results be even better with 3' dia. pipe deeper in Earth?
(what's a "culvert" refer to?)

I have always been amazed at what can be counted on just 4' below grade
(besides absolutely stuck ground rods...) with T stability.  I mean if
you're not in a permafrost zone, ground temp. seems to very stable...

Is your below basically the definition of "adiabatic geothermal energy?"
But without the water/other mixture and heat exchanger/pressure
vessel/turbine systems?  Or is there a special term when we're discussing
air space heating/cooling?

Thanks,
Peter

Link to India website which seemed complete on the subject but older info:
http://www.geos.iitb.ac.in/geothermalindia/pubs/geoweb.htm


-----Original Message-----
From: Todd Cory, Mt. Shasta Energy Services
[mailto:toddcory at finestplanet.com]
Sent: Thursday, June 15, 2006 9:05 AM
To: RE-wrenches at topica.com
Subject: Re: cooling technologies [RE-wrenches]

In a previous live, when I was a engineer for a (so called) "public"
radio station, one of the remote broadcast mountain tops was cooled with
the earth. There was about 100' of ~3'diameter cement culverts stacked
end to end, buried about 4 feet below the ground. On the intake end was
hardware cloth screening. In the transmitter building a large squirrel
cage fan sucked cool air through this tube. It worked very well and
successfully mitigated the inefficient tube transmitter's heat production.

Another example is at the hydro plant I work part time which is mostly
underground. The highest summer temperature runs about 60 degrees (when
it is 90 out) and the coldest winter temperature runs about 50 degrees
(when it is 25 out). This is with considerable air flowing through the
dam adits (out in the winter and in, in the summer). Harvesting the
moderating temperatures of the earth seems to be a reasonable solution
to space conditioning.

Todd

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