On 13/07/2009, at 4:26 AM, Dan M wrote:
-----Original Message-----
From: [email protected] [mailto:brin-l-
[email protected]] On
Behalf Of Charlie Bell
There are several devices to do this, some of them actually on the
market. One is a wind turbine arrangement that produces around 10
litres an hour (plenty for drinking purposes for several people!).
I looked at reports on this, although I didn't even bothering
checking the
website you mentioned because you said it was down.
One think struck me, although they talk about being great because
alternative energy sources can be used, there was no mention of the
amount
of energy needed per liter of water.
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. Even a cold beer at 3C attracts a lot of condensation. This
is definitely a small scale solution for remote locations.
It reminded me of your discussion of
how energy intensive desalination is.
Yeah, but that's a different process. But look at how much water comes
out as a by-product of airconditioning systems...
Charlie.
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