Salinity Gradient Solar Ponds

Salinity-gradient solar ponds are of interest as a means for collecting solar energy and storing it as heat for such low-temperature applications as space heating, industrial water heating, and crop drying. Used in such applications, solar ponds may be significantly lower in cost than other solar collectors; and they combine at the same time the capability of long term storage. In favorable sites where conventional fuel costs are unusually high, it is possible to use solar ponds for solar thermal power generation. By far the largest solar ponds operated to date are those at the 5MW peaking power station at the north end of the Dead Sea in Israel. Their intrinsic storage capability distinguishes solar pond power stations from other solar-electric systems.

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