Solar pond could produce fresh water
Jan 06, 2010
Salty lakes worldwide could produce valuable freshwater
using a low-cost solar process developed at the University of Nevada, researchers
The process traps heat at the bottom of a specially built solar pond
and uses the collected energy to power a desalination system recently patented
by the university, researcher Francisco Suarez said in a release Tuesday.
every surface acre of solar pond we can make three acre-feet of freshwater in
about one year," Suarez said.
In experiments using an outdoor tank, hot
brine in the lower zone of the tank reached temperatures greater than 195 degrees
Fahrenheit, which then was used to power a thermal desalination system.
and his team want to build a pilot-project at Nevada's salty Walker Lake. The
cost to run the system would be negligible because it would use the renewable
energy of the sun, trapped as heat in the bottom of a pond, to power most of the
system, he said.