Dan M  wrote:

>
> > None, once it's out there. IIRC, it's a small wind turbine that cools
> > collectors in it, and desert air is often humid even if it doesn't
> > rain much.
>
> If the collectors are cooled, there _has to be_ a source of energy that is
> being used.  If not, then we've just found an exception to the 2nd law of
> thermodynamics.
>

Why doesn't the wind turbine count as a source of energy?  It's pretty
obvious that when he said "none" he meant no _external_ source of energy.

Doug
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