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It seems to me that my pool is always too cold and my house it
too hot. Why not use a heat exchanger to help fix both
Take a simple auto radiator, pump, and fan and blow warm
household air over a radiator that is filled with the cool pool
Half-baked already, sorry... [RayfordSteele, Jul 08 2002]
||The opposite of this was baked in the 60s. The 'swimming pool solar collector' worked by having graded salinity layers, denser at the bottom, so that solar radiation passed through to the bottom & heated it up, but the salinity grade stopped convection. And because of the pressure of the water layer, the bottom could heat above boiling (the salinity helped here too).