WAVE ENERGY CONVERTERS ARE IN USE NOW, AND MORE ARE BEING BUILT. HERE IS THE LATEST:
Image from renewable energy focus .com article by George Marsh dated 14 Feb.2014
Please go to the linked article for a more detailed explanation of how Wave energy converts work.
Anyone who has ever stood on a beach and listened to the waves lapping the shore is intuitively aware that ocean waves carry considerable kinetic energy. We've long known that about falling water; and the water wheel driven grist mill has been in operation for centuries. More recent is the water driven turbine. However, a mechanism to harness the in and out varying tempo of the moving water of an ocean wave just wasn't as intuitive as the water wheel and the turbine. By the time we seriously turned our attention to the challenge, the piston driven internal combustion engine, converting an up and down motion via a crank shaft to a rotary motion generating drive to wheels, had been around for more than a century. None the less despite the less than cutting edge image of the piston the idea of harnessing the kinetic energy of the ocean's waves seems pretty Buck Rogers to a lot of us who haven't been following developments in this field regularly. Our purpose in this post however is not to explain the how of the technology but simply to report on the latest application that we recently came across in the pages of WORKBOAT Magazine. We found an explanation of the how it's done part in an article by George Marsh in Renewable Energy Focus .com
WORKBOAT which we always link you to in our news section reported in their March 2018 issue that the Portland Oregon ship yard VIGOR is building a 125' by 59' wave energy converter buoy for Ocean Energy Group and its subsidiary Ocean Energy USA. This latest wave energy converter will be sent to the U.S. Navy's Wave Energy Test Site ("WETS" in "NAVSPEAK") on the windward, and hence wavy side of Oahu. This is a first of its kind for the Navy WETS and is partly funded by the DOE to the total tune (for the whole experiment not just the energy converter buoy) of about $12 million. A little more than half that figure went into just the wave energy converter buoy. Also participating in the project is Sustainable Energy Authority of Ireland ("SEAI" in "NAVSPEAK").
Our research reveals that while this is the latest application of the Wave Energy Converter, it is far from the first. We now know how to build these things . It probably happened while we were napping.
Map Image By Arkyn licensed under the Creative Commons license. |
Under water archaeologists recently discovered a 7,000 year old burial
ground under the surface of the Gulf of Mexico near Manasota Key in
Charlotte / Sarasota Counties, Florida. Human remains were found
and the site is believed to date back approximately 7,000 years. The site
appears to be a submerged former surface feature, a fresh water peat bog.
Peat is a much better preserver of organic remains than the silica sand
common to the sea floor in the Gulf of Mexico especially off of most of
Florida.
MANASOTA BEACH |
is now being patrolled. Divers and snorkelers are reminded that it is
unlawful to disturb submarine archaeological sites. The discovery happened
as a follow on investigation of the discovery of a human bone by a
recreational diver. The bone was nearly 7,000 years old. Carbon dating of
the site indicates that it is about 7250 years old. The submerged burial
ground which includes some protruding still preserved wooden stakes
helps establish the outline of the Florida coast of some 7,000 years ago
when the climate was colder and the sea shallower. There was nothing
new to learn from the site in terms of how long Florida has had human
inhabitants. Other graves in the state have already dated as far back as
14,500 years. However, careful, scientific investigation may yield
information on the lives of the inhabitants of Florida about 3,000 years
after the ice sheets of the last ice age began to melt. Moreover
there is information to be gained from this site concerning the actions
of peat in the preservation of organics, and the dynamics of former peat
bogs submerged for thousands of years under a salty sea.
Timothy Parsons is the director of Florida's Division of Historic Resources.
He has noted to the media that the site is important archaeologically,
but also is a burial site for human beings related to Florida's indigenous
peoples and as such is to be treated with utmost respect and dignity just as
you would respect a colonial era church grave yard. At only 300 yards off
shore and in shallow water, this is going to be a technically easy submarine
archaeological investigation. However, the present level of police protection
can't continue forever. A site like this will be dependent on public education
and public vigilance to avoid ruin.