Electricity from ocean water

Generating energy from ocean waters.  According to  Hawaiian researchers  the Leeward side of Hawaii  may be ideal for future ocean-based renewable  energy plants,  that would use seawater from the oceans’ depths to drive massive heat engines and produce  steady  amounts of renewable energy.

The technology involves placing a heat engine between warm water collected at the ocean’s surface and cold water pumped from the deep ocean. Like a ball rolling downhill heat flows from the warm reservoir to the cool. The greater the temperature difference, the stronger the flow of heat that can be used to do useful work such as spinning a  turbine and generating electricity.

The technology of Ocean Thermal Energy Conversion (OTEC) dates back more than a half century.  However, it has never taken off, largely because of the relatively low cost of oil and other fossil fuels.  But if there are any places on Earth where large OTEC  facilities would be cost competitive,  it  is where the ocean temperature differentials are the greatest.

http://www.sciencedaily.com/releases/2010/08/100803175019.htm

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s