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Posted by dold on July 28, 2006, 11:24 pm

unique isn't the proper word here.
Innovative in the 70's perhaps, but not unique.

That would be a geothermal heat pump.

Maybe a math error in the conversion from centigrade to those F units.
More likely the annual average of the ambient temperature.  Or maybe there
is an underground heat source, like a hot spring, conveniently far enough
away to give his location a 68f source.  That would be very handy.

For me, the ground temp should be 56f.

Clarence A Dold - Hidden Valley Lake, CA, USA  GPS: 38.8,-122.5

Posted by News on July 29, 2006, 6:46 am

Some have managed cooling by running a very long pipe underground and
pumping water through it.  Simple and cheap to run.  I think he means that.

Posted by Zombie Wolf on August 2, 2006, 2:55 pm
 This is the very same kind of technology that heat pumps use - they take
advantage of the fact that temperature underground is about 50 degrees year
round. They extract some of that heat and use ti to heat and / or cool your
house. the best souce for this is the water in your well, if you have one.
If you have a deep artesian well, then all that is really needed is to tap
into the house cold water supply for the input to the heat pump, and a
return line to your well to dump the water back into it when the heat pump
is done with it., so that it can be re-heated by the ground surrounding the
well. This works very well, and is quite cheap to run. Great alternative if
you cant build solar collectors and mount them on your roof. also makes a
great backup source of hot water for existing solar systems, when the sun
doesnt come out for a week at a time...

Posted by News on August 2, 2006, 9:54 pm

Where I live it is not 50f all year around at 4 foot deep.

You can bury water pipe as deep as possible and use this to heat and cool
running it through a duct battery. It will cool the earth around and then
become ineffective.  It is best to have two loops, say one in the front
garden and one in the back.  Then switch from one to the other.  One at rest
allowing the earth to re-heat.

Posted by News on August 2, 2006, 9:55 pm
 Please do not top post as you ruin the thread.

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