I want to cool my pool in the summer. The water heats up to 91 degrees.
I am thinking of burying 900 ft. of 4in. thin waled pvc pipe 6ft down where the ground temp is 76 degrees.
Any idea of the rate of flow I would need to run through the system to cool my pool down to 80-84 ?
I will use my pool pump that runs 12hrs at night plus 4hrs during the day.
The pool heats up about 4-4.5 degrees a day so I wont have to run the system all the time but I could.  And in the winter I could warm it from the low 50s.

The system holds 585 gallons and the pool is 23,000 gallons

Just a home owner with an idea I think will work .
ANY help or advise would be great,

Thanks
Dan

Dear Dan, Just ran across your question and your pool could be cooled in different ways -- one by running a solar heating system at night to cool the water or another would be to install a water chiller. This is quite common in places like Las Vegas, Phoenix and Western Australia (which is where the technology came from for "Insulated Pool Kits"). In Australia, the water is put in an insulated structure to maintain the cooler water temperatures by running their solar at night. These suggestions are probably less expensive than the method you metioned. Hope this helps. Kind Regards, Jeffrie -- Insulated Pool Kits