Oceanographic investigation for designing of an Ocean thermal energy conversion in the vicinity of the Tsushima Island
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- ICHINOSE Junya
- 独立行政法人水産大学校海洋機械工学科
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- NAKAOKA Tsutomu
- 独立行政法人水産大学校海洋機械工学科
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- NISHIDA Tetsuya
- 独立行政法人水産大学校海洋機械工学科
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- UEDA Takahiro
- 独立行政法人水産大学校練習船
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- NAKASHIMA Daisuke
- 独立行政法人水産大学校練習船
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- HATA Kazuhiro
- 独立行政法人水産大学校練習船
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- MIZUTANI Sortaro
- 独立行政法人水産大学校練習船
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- SHIMAZAKI Wataru
- 独立行政法人水産大学校練習船
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- WAJIMA Takaaki
- 佐賀大学海洋エネルギー研究センター
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- URATA Kazuya
- 佐賀大学海洋エネルギー研究センター
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- IKEGAMI Yasuyuki
- 佐賀大学海洋エネルギー研究センター
Bibliographic Information
- Other Title
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- 対馬海域における海洋温度差発電設計のための海洋調査
- ツシマ カイイキ ニ オケル カイヨウ オンドサ ハツデン セッケイ ノ タメノ カイヨウ チョウサ
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Abstract
On the Tsushima Island, a practical application of an ocean thermal energy conversion (OTEC) and desalination plant is expected due to the short of electric power and drinking water. In the present study, we made oceanographic observation in the area northwest of Tsushima Island on August, October and November in 2005 and July, August and October in 2006 to obtain physical and chemical data (water temperature, salinity, dissolved oxygen, nutrients and velocity of currents) and topographic data, which is necessary for designing the hybrid OTEC system.<BR>Approximate temperatures in the surface and deep seawaters (SSW and DSW, respectively) at about 170 m in depth were 28°C and 5 °C in August 2005, and 21°C and 8 °C in November. From the thermal data, OTEC was supposed to be active from August to October. The salinity in SSW and DSW were 31.0-31.8 31.8 PSU and below 34.2 PSU, respectively in August 2005; between depths of 30 and 50 m a drastic halocline was detected. The low salinity of SSW in summer suggests the influence of continental river waters. Dissolved oxygen in SSW and DSW in August 2005 were comparatively high (> 5.0 ml/1). Water quality showed drastic seasonal changes in SSW shallower than a depth of ca. 150 m, which may be the influence of continental river waters. On the contrary, DSW characterized by high salinity and low temperature was thought to be the cold water endemic to Sea of Japan. On an expected cold water pipe (CWP) (180-200 m in length, 1.7 m in diameter) designed for a seabased 1, 000 kW OTEC plant, the maximum bending moment was estimated to be larger than 3, 922 Nm. In the case of employing a land based OTEC plant at Cape Sao on the north of Tsushima Island, length of the CWP should be longer than ca. 9.5 km.
Journal
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- DEEP OCEAN WATER RESEARCH
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DEEP OCEAN WATER RESEARCH 8 (1), 7-21, 2007
DEEP OCEAN WATER APPLICATION SOCIETY
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Keywords
Details 詳細情報について
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- CRID
- 1390282680252273664
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- NII Article ID
- 130005450546
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- NII Book ID
- AA11858274
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- ISSN
- 1884958X
- 13458477
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- NDL BIB ID
- 9601434
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed