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TeachMeFinance.com - explain Salt gradient solar ponds Salt gradient solar ponds The term 'Salt gradient solar ponds' as it applies to the area of energy can be defined as ' These consist of three main layers. The top layer is near ambient and has low salt content. Thebottom layer is hot, typically 160° F to 212° F (71° C to 100° C), and is very salty. The important gradient zone separates these zones. The gradient zone acts as a transparent insulator, permitting the sunlight to be trapped in the hot bottom layer (from which useful heat is withdrawn). This is because the salt gradient, which increases the brine density with depth, counteracts the buoyancy effect of the warmer water below (which would otherwise rise to the surface and lose its heat to the air). An organic Rankine cycle engine is used to convert the thermal energy to electricity'. Previous 5 Terms: salinometer Salmonella Salmonids salpiform Salt dome Next 5 Terms: salt water intrusion Saltation salt-wedge estuary salutiferous salvage cut About the author Mark McCracken Author: Mark McCracken is a corporate trainer and author living in Higashi Osaka, Japan. He is the author of thousands of online articles as well as the Business English textbook, "25 Business Skills in English". Copyright © 2005-2011 by Mark McCracken, All Rights Reserved. TeachMeFinance.com is an informational website, and should not be used as a substitute for professional medical, legal or financial advice. Information presented at TeachMeFinance.com is provided on an "AS-IS" basis. Please read the disclaimer for details.