On Sun, 11 Apr 2004 14:00:02 GMT, Ryan
wrote:

I would consider one my like they use at modern nuclear power plants to
protect their coolant water

heat -------- coolant water ----------- pool water

The Freon in the return line to the compressor must be the hottest
part of the whole system. Perhaps introduce a bypass radiator here
to dump the heat. This radiator can be the automotive oil cooler
radiator that can tolerate high pressure fluids. The Freon return
line heat is transferred into an intercoolant tank of automotive
antifreeze mix; antifreeze because it has anti-rust properties, has a
higher boiling temperature (?) and the tank can be capped to reduce
evaporation. This allows a "cooler" Freon return to the compressor
and therefore decreases the load on the a/c. Even if the intercoolant
tank breaks down the normal heat dump mechanism of the a/c is not
affected.

The pool water is circulated through a car engine radiator and picks
up the heat from the intercooler. If in time the pool's chlorine
wreaks the car radiator just replace it with another one from the pick
a part junkyard.