I have been thinking about the same thing. You might find this URL
interesting.
http://www.builditsolar.com/Projects/PoolHeating/pool_heating.htm
I took some sump pump hose and have created a coil from each of two 24 foot
lengths.
I have two of them connected in series and plan to put them between the pump
discharge and the pool.
Our pool is currently 92 degrees, so my solar heater must be working great!!
I wonder how much better it will work when I hook them up. %^)
Looking forward to cooler weather so I can check my design.
Rich White St. Joseph, IL USA
'63 TR3B TCF587L
That ain't a scrap pile, that is my car!
See it moves!
> From: dirtbeard@pacbell.net
> To: shop-talk@autox.team.net
> Date: Sat, 27 Jun 2009 16:17:52 -0700
> Subject: [Shop-talk] solar pool heater
>
> Hi guys,
>
> This is off-topic and I apologize, but I trust the wisdom of this group.
>
> I have a ~20K gallon swimming pool here in the Los Angeles area and would
like
> to build a solar pool heater.
>
> My pool pump and filter are at a lower elevation than the pool, and I have
> plenty of space adjacent to the pump with a good southern exposure. Given
that
> the array would be lower than the pool, this seems like a natural for solar
> heating (should not take much pump with the inherent gravity flow)
>
> I am looking at the commercial solutions that use flat black rubber panels
> that are intended for roof mount, but I was wondering if I could fabricate
a
> "solar collector" out of PVC pipe painted black or use ABS pipe either in a
> parallel or "serpentine" array with a small, efficient, separate pump (I
have
> two inlets to the pool and could just create one "loop" for the solar
heater).
>
> I know there are a lot of sizing issues, will the pipe stand up to the
> heat/pressure, etc., but since I have the space and don't need to do a roof
> mount (the array would be on a down-side hill and would not need be
> visible/nee to be attractive), I am wondering what you think about using
> conventional plastic plumbing materials to create a solar array?
>
> I could just frame it at the optimal solar angle and lay the pipes adjacent
> side-by-side, or could put a black back-plate made of most any material, or
> could get fancy and put the pipe in a "box" with a glass top to trap the
heat,
> etc.
>
> But I am thinking that with a surface area of the same size or even twice
the
> size of the pool, a sizable array of black plastic pipe just sitting in the
> SoCal sun could pump a great deal of heat into the pool without any fancy
> efforts.
>
> It seems to me that it should work. If I am missing something here, PLEASE
let
> me know. Thanks in advance guys.
>
> best,
>
> doug
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