Alternative Energy from the Ocean
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| Alternative Energy from the Ocean |
Ocean Thermal Energy Conversion ("OTEC") was
conceived of - by the French engineer Jacques D'Arsonval in 1881. However, at the
time of - this writing the Natural Energy Laboratory of - Hawaii is home to the
only operating experimental "OTEC" plant on the face of - the earth.
"OTEC" is a
potential alternative energy source that needs to be funded and explored much
more than it presently is. The great hurdle to get over with "OTEC" implementation on a wide and practically useful level is cost. It is difficult
to get the costs down to a reasonable level because of - the processes presently
utilized to drive "OTEC".
Ocean thermal energy would be very clean burning and
not add pollutants into the air. However, as it presently would need to be set
up with our current technologies, "OTEC" plants would have the capacity for
disrupting and perhaps damaging the local environment.
There
are three kinds of "OTEC". “Closed Cycle OTEC”
uses a low-boiling point liquid such as, for example, propane to act as an
intermediate fluid. The OTEC plant pumps the warm sea water into the reaction
chamber and boils the intermediate fluid. This results in the intermediate
fluid's vapor pushing the turbine of - the engine, which thus generates
electricity.
The vapor is then cooled
down by putting in cold sea water. “Open Cycle "OTEC” is not that different from closed cycling, except in the Open
Cycle there is no intermediate fluid. The sea water itself is the driver of - the
turbine engine in this OTEC format. Warm sea water found on the surface of the
ocean is turned into a low-pressure vapor under the constraint of - a vacuum.
The
low-pressure vapor is released in a focused area and it has the power to drive
the turbine. To cool down the vapor and create desalinated water for - human
consumption, the deeper ocean's cold waters are added to the vapor after it has
generated sufficient electricity. “Hybrid Cycle
OTEC” is really just a theory for - the time being.
It seeks to describe
the way that we could make maximum usage of - the thermal energy of the ocean's
waters. There are actually two sub-theories to the theory of - Hybrid Cycling.
The first involves using a closed cycling to generate electricity. This
electricity is in turn used to create the vacuum environment needed for open
cycling.
The second component is the integration of - two open cyclings such that
twice the amount of - desalinated, potable water is created that with just one
open cycle. In addition to being used for - producing electricity, a closed cycle "OTEC" plant can be utilized for treating chemicals. "OTEC" plants, both open
cycling and close cycling kinds, are also able to be utilized for - pumping up
cold deep sea water which can then be used for refrigeration and air
conditioning.
Furthermore, during the moderation period when the sea water is
surrounding the plant, the enclosed are can be used for - mariculture and
aquaculture projects such as fish farming. There is clearly quite an array of -products and services that we could derive from - this alternative energy source.

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