25-08-2017, 09:32 PM
OCEAN THERMAL ENERGY CONVERSION
OCEAN THERMAL ENERGY.pptx (Size: 1.81 MB / Downloads: 124)
HISTORY OF OTEC
1881: Jacques Arsene d'Arsonval.
1930 :Georges Claude – open-cycle OTEC system at Matanzas Bay, Cuba.
The system produced 22 kilowatts (kW) of electricity .
Converts heat energy to Electricity.
It works good when Temperature of at least 20 Degree Celcious.
1979:18-kilowatt (KW) closed-cycle
OTEC in Hawaii.
Known as "Mini-OTEC," the plant was
mounted on a U.S. Navy barge moored approximately 2 kilometers off Keahole Point at Hawaii
The plant used a cold water.
CLOSED LOOP CYCLE
Closed-cycle systems uses working fluid.
Warm surface seawater is pumped through a heat exchanger.
The expanding vapor turns the turbo- generator.
Then cold deep seawater— pumped through a second heat exchanger.
condenses the vapor back into a liquid.
which is then recycled through the system.
OPEN LOOP CYCLE
It uses the warm sea water
Water placed in Low pressure container
Steam is driven in to the Turbine
Production of fresh water
The steam is condensed into liquid
Outs the Desalinated water & waste water
ADVANTAGES OF OTEC
Eco- friendly
Minimum maintenance costs compared to other power production plants
Provide air conditioning to buildings with the OTEC plant
Fresh water - first by-product is fresh water.
A small 1 MW OTEC is capable of producing some 4,500 cubic meters of fresh water per day.
Open cycle OTEC systems can produce desalinated water which is very important in third-world countries.
Chilled soil agriculture- cold seawater flowing through underground pipes, chills the surrounding soil.
CONCLUSION
Continuous production of Electricity & Fresh water has been demonstrated with this experimental plants.
OTEC is the most benign & less risky form of generating large amounts of energy presently available.
These technologies are renewable sources of energy.