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From: Bret Cahill on 23 Jul 2010 16:47
This would certainly be the cheapest way to get the pool temperature
down a few degrees.

The "duckweed" must be something like cheap mylar plastic disks that
spread out by themselves with very little clumping. Maybe surface or
magnetic effects + slight wave action will work.

http://en.wikipedia.org/wiki/Lemnaoideae

The disks must either float just below the surface or wick water
through for evaporative cooling. The disks should be large enough to
not pass through the filtration / chemical system.

The disks also need to be non toxic.


Bret Cahill








From: jimp on 23 Jul 2010 17:06
In sci.physics Bret Cahill <BretCahill(a)peoplepc.com> wrote:
> This would certainly be the cheapest way to get the pool temperature
> down a few degrees.

No one anywhere is worried about cooling down their swimming pool.

The problem is heating them up and keeping them warm.

<snip idiocy>


--
Jim Pennino

Remove .spam.sux to reply.
From: Bret Cahill on 23 Jul 2010 17:23
On Jul 23, 2:06 pm, j...(a)specsol.spam.sux.com wrote:
> In sci.physics Bret Cahill <BretCah...(a)peoplepc.com> wrote:


http://groups.google.com/group/alt.philosophy/browse_frm/thread/ca7ec1820a004f55/80a2078492acf3d9?hl=en&lnk=gst&q=first+responders#80a2078492acf3d9
From: jimp on 23 Jul 2010 18:44
Bret Cahill <BretCahill(a)peoplepc.com> wrote:
> On Jul 23, 2:06 pm, j...(a)specsol.spam.sux.com wrote:
>> In sci.physics Bret Cahill <BretCah...(a)peoplepc.com> wrote:
>
>
> http://groups.google.com/group/alt.philosophy/browse_frm/thread/ca7ec1820a004f55/80a2078492acf3d9?hl=en&lnk=gst&q=first+responders#80a2078492acf3d9

It is the initial poster that is ignorant.

Cooling a swimming pool is not an issue other than in a very few, and very
hot places and easily done through evaportation techniques put in line
with the filter system.

You are solving a problem that is for all practical purposes non-existant.

What a surprise.


--
Jim Pennino

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From: Bret Cahill on 23 Jul 2010 19:48
http://groups.google.com/group/alt.philosophy/browse_frm/thread/ca7ec1820a004f55/80a2078492acf3d9?hl=en&lnk=gst&q=first+responders#80a2078492acf3d9
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