[APD] Re: Heat exchanger - was aluminum in the aquarium

["Tom Wood" <tomwood2 at flash_net>]

"Just a thought, but if you need further temperature reduction 
there is another possibility you might try. Depending on where 
you are located geographically you may be able to get very good 
cooling performance from some pipe buried outdoors maybe 6-12" 
down. I tried this once here (outside Detroit, in Michigan) with 
maybe 20 feet buried about 4-6" (one shovel depth :-) and was 
able to get a few hundred watts of dissipation very nearly 
continuously.  ::snip:: It's very effective cooling in the 
northern latitudes, probably wouldn't work so well if you were in 
southern Texas :-) "

Hi Bill,

I'm in Austin and we used that very method to cool a 30,000 
square foot branch bank building. We drilled -lots- of holes very 
deep to get to the cool parts of the ground. It was a big lot, so 
we had plenty of room to srpead out. In Texas we pay a premium on 
electrical peak demand, so not having a chiller switch on makes a 
big difference. Dunno how it would affect the core temp of the 
earth if everyone did it. (Lame reference to the movie The Core.)

TW 


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