History of OTEC
The history of OTEC development is surprisingly long. In 1881, Frenchman, J. D'Arsonval first conceived the idea of OTEC, and in the same year the world's first thermal power generator was made. A couple of years later, in 1883, the world's first steam turbine was constructed by a Swede, De Laval. Since in the 1880s, power generating techniques were in their infancy, and D'Arsonval's idea could not be realized at that time.

Later another Frenchman, G. Claude, attempted to put OTEC to practical use. From 1926 to 1950, various experiments were carried out but ended in failure. The reason for Claude's failure was that he employed an open cycle. At that time techniques for power generation were somewhat primitive.

In 1964, J.H. Anderson and J.H. Anderson Jr. conceived of a new OTEC plant which overcame the weak points of Claude's system and a patent was obtained. This invention of Anderson's attracted considerable attention and created the opportunity for rekindling research concerning OTEC. Later, the first energy crisis in Japan in 1973 provided the motivation for Japan and America to perform fundamental research.

The principle research outcomes which followed are listed in table1. Recently actual OTEC plants have been constructed in rapid succession thus enabling experiments to be performed.

Chronological table of OTEC
1881
D'Arsonval (France) conceived of OTEC
1926
Claude (France) began research for commercial use
1933
Claude built power generating ship (1200KW)
1964
Anderson's proposal for a power generation in the sea
1970
OTEC research results examined by the board of investigation into new power generation methods (Japan)
1973
Saga University, Japan, commenced research study on OTEC technology-power generation
1974
OTEC research commenced as part of Sunshine project plan (Japan)
1974
ERDA project (USA) commenced
1974
First international OTEC conference (USA)
1977
Saga University succeeded with 1kw of power
1979
Mini-OTEC (USA) succeeded with 50KW of power
1980
Saga University performed experiments on the sea, off Shimane in Japan Sea
1981
Tokyo Electric Power Co., succeeded with 120KW of power on Nauru
1982
Kyushu Electric Power Co. succeeded with 50KW of power at Tokunoshima, off Kagoshima, Japan
1985
Saga University completed 75KW of power plant
1988
Inauguration of Organization of OTEC Study (Japan)
1989
Agency of Science and Technology (Japan) began study of utilization of deep ocean water (DOW) off Toyama in Japan Sea
1990
IOA (international OTEC Association) was organized by Taiwan, USA and Japan)
1993
210KW open cycle system completed in Hawaii
1994
Saga University constructed a new cycle plant
1995
Saga University started on testing new 4.5KW cycle plant (Kalina cycle, Uehara cycle)
1997
Signing of collaboration memorandum with National Institute of Ocean Technology (NIOT), India, on OTEC study
2003
Saga University Completed 30KW multipurpose OTEC Plant in Imari, Saga,Japan
2005
OPOTEC (Organization for the Promotion of the Ocean Thermal Energy Conversion) established in Saga, Japan

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