Reflecting Pool

A friend sent this question, can anyone help?

Paul

> > The reflecting pool is a giant water solar collector.
> >
> > 300 feet by 60 feet by 3/4 inch deep.
> > 80,000 gallons of water on the surface of black marble.
> > 480,000 gallons of water below the marble in a sump area.
> > The top surface is open to the air.
> > Water is circulated by VFD controlled pumps to maintain the proper
depth.
> >
> > My guess is on an Africa hot Oklahoma summer day (100 degrees F air
temp),
> > this water will reach 100 degrees early in the day. The sump water will
> > have some cooling effect of being in a concrete pit with 55 degree dirt
> > around and below. There will be some evaporative cooling on the surface
of
> > the water even at high relative humidity. On a sunny day, as soon as
the
> > sump vault and the surrounding earth is warmed there is no cool down for
> > this system. The water will then go into a warmer condition that air
temp.
> > The small pump room where this water circulates will soon warm above the
> > ambient limit of some of the computers that control this feature.
Received on Thu Apr 27 14:23:00 2000