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Talk:Directory:S.D.E. Energy Ltd.
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Discussion page for Directory:S.D.E. Energy Ltd.
The 80 degrees F surface water in the tropical oceans serves as the heat source and typically 3,000 feet below the surface is the heat sink or the cold bottom water, which is 40 degrees F. This temperature difference or delta T is sufficient to operate vapor turbines, which drive generators and produces electricity and fresh water as a byproduct.
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Beat to Pieces / Environmental Considerations
On November 03, 2006, Robert Davis wrote (at The Energy Blog:
"There is a lot of mechanical stress on these systems in general, although I can't speak to SDE's design in particular. Ocean Power Technologies did a prototype installation off Kaneohe a while back that literally pounded itself to pieces in a storm. (I know an engineer that worked on the project.)"
"SDE's design actually requires an existing breakwater or other structure, so you'd have to factor those into your construction costs and EROEI calculations, not to mention the environmental impact. There is a growing body of research demonstrating that seawalls are very bad things for coastlines. Installing these on existing breakwaters would probably be a good idea, but that would hugely limit their use to minor niche status."
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Categories: Ocean | Thermal | Solar
