Wow, so if I piped a radiator into the system and pumped through it at
night, it would cool? Great, this is just the kind of thing I would
like to try.
Givens: Say it is 100 during the day, and drops to 80 at night. My
pool is about 92 right now and getting warmer daily. If I could get it
down to 85 it would be well worth it.
I have at least two car radiators in the junk pile, rather, I meant to
say, in inventory.
How much radiator surface? Would 4 be twice as effective as 2? Should
I spray them black?
Do I need to run a fan through them; in other words how important is air
flow to the heat transfer?
If I pipe them into the return from the filter system, then I wouldn't
have to even worry about a pump -- is there a cheap and easy
thermostatic control to switch a valve whenever ambient < pool temp?
I envision a simple array of car radiators on a frame with radiator
tubing connecting them in parallel, set up as a separate loop back under
the trees where the filter, pump, and chlorinator are.
If this works, it will be a very popular Instructable. Everyone wants
their pool cooler around here...
Thanks!
P.S. For the OP, yes, a simple pool cover will make your pool warm enuff
for anyone. They are a pain unless you get an automatic as recommended,
or even just a spool that you turn the crank on manually.
> Solar pool heater, run when the sun isn't shining. Radiative cooling
> works as well as radiative heating. (Better, some times. The night
> sky is a lot colder than the day time sky is warm.)
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