Many Types Of Ocean Power Rising
Turning tide for ocean power: Is marine energy coming of age?
Jonathan Koch, May 24, 2017 (Cleantech Group)
“Ocean energy still has a long voyage before reaching the relative level of investment and maturity of other renewables, but recent activities in the sector are hinting at promising developments and breakthroughs…There are at least four different technologies to harness the energy of the sea – ocean thermal energy, salinity gradient energy, tidal energy, and wave energy…Ocean thermal conversion exploits the difference in temperature between deep and surface waters, while salinity gradient generation converts the difference in salt concentration between fresh and saltwater, typically found in fjords and deltas…[W]ave energy converters capture energy from the motion of waves through either floating or submerged devices…[T]idal turbines generate electricity from the tides caused by the gravitational force of the moon and can be mounted to the seabed like submarine wind turbines (tidal stream), or integrated within a barrier impounding a lagoon (tidal range)…Similar to offshore wind farms, the deployment of these technologies faces challenges from difficulties in grid connections, as well as the harsh (salty & stormy) and remote (underwater) environment in which they are to be implemented…[N]o single dominant design has yet to emerge…[but there is] a plethora of new start-ups…” click here for more
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