Re: Trying to keep cool

["John S. Denker" <jsd@MONMOUTH.COM>]

Daniel Schroeder2 wrote:
> Has anyone ever designed
> a system to pump water in and out of the house, to
> exchange heat rapidly at night and then slow the
> warm-up during the day?

Yes.

http://www.google.com/search?q=heat-exchange-well

You can use the same idea during the winter, if
you have a thermodynamic heat pump, to give the
cold ("exhaust") side of the heat pump something
relatively warm to work against.