It's all Plain to Sea

[recdoctor]

looking for ways to cool a swimming pool in the summer. Would it be possible to send the water underground adn come back 10 to 15 degrees cooler? Water presently is 92-95 degrees and the air temperature is usally 90-100 going down to 70-75 at night.
any help?
recdoctor@earthlink.net

[mrhobbithhnet]

The best way to cool your pool is by evaporative loss systems. Basically you pump the water out of the pool and splash it through a series of baffles that expose it to the night air and breezes. It then returns to the pool at the temperature at or below the night air temperature. This is a standard approach for "chillers" used in modern AC refrigeration systems on large commercial operations. The equipment would be the same.

Downside is the cost of the system new, so building your own would be the way to go. There will a high cost for chlorine too, as this will dissipate it all too. To save chlorine costs, you'd have to use a closed loop for the pool water with another heat exchange loop with the chiller designed into it.

I can envision such a system put together with simple plumbing parts to test a proof of concept in a small experiment system setup. From a little expense, you could expand the results to get an idea of the total cost of the system.

If you use salt water chlorination, the chemistry costs go down considerably.
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