日本財団 図書館

共通ヘッダを読みとばす


Top > 社会科学 > 社会 > 成果物情報

アジア・西太平洋研究ネットワーク 研修テキスト

 事業名 アジア・西太平洋海洋研究ネットワークの構築
 団体名 海洋研究開発機構 注目度注目度5


第7週

 

・波力発電、高圧実験水槽

 

328-1.gif

 

The Offshore Floating Type Wave Power Device "Mighty Whale" and Its Multi-Purpose Utilization

Yukihisa Washio*

 

ABSTRACT

"Mighty Whale" is an offshore floating type wave power device based on the oscillating water column (OWC) principle. It converts wave energy into electric energy, and produces a relatively calm sea area behind the device. These electric energy and calm sea area will be able to utilize for varied applications such as to improve a deteriorated ocean environment and fish farming.

JAMSTEC constructed the prototype of Mighty Whale on May 1998 for open sea tests in order to investigate practical application. The open sea tests have carried out since September 1998 at Gokasho Bay in Mie Prefecture and are still continuing.

This paper presents an outline of the prototype and study of multi-purpose utilization of Mighty Whale.

 

Key Words: wave energy, wave power generation, oscillating water column, renewable energy

 

1. INTRODUCTION

Ocean energy typically taking the forms of wave energy, ocean thermal energy, ocean currents and tidal currents energy is the renewable and inexhaustible energy that exists on the earth in a huge quantity, though its energy density is low. It also draws attention from an environment conservation point of view as an energy source causing less environmental loads with little emission of greenhouse effect gases or hazardous wastes. Particularly, development of technology to utilize wave energy is considered important, as it is the form of energy that can be easily recovered in the coastal zone and would make an economical distributed type energy source readily available at isolated islands, remote areas and developing countries.

In the meantime, water and bottom eutrophication is serious in the coastal zone of Japan due to its heavily populated and industrialized coastlines and utilization of wave energy is also expected to provide a remedy to these problems. Japans coastal zone provide bases of mariculture and marine sports as well and needs for a calm sea area located near the coastline are expected to intensify increasingly in the future. However, it is difficult to secure calm sea areas newly for these purposes and development of technology to expand calm sea areas offshore is desired.

The Japan Marine Science and Technology Center (JAMSTEC) has been conducting research and development of an offshore floating type wave power device, the "Mighty Whale" that use an ocean energy source, wave energy. The Mighty Whale has a wave power generation function for converting wave energy into electrical energy and a wave height dissipation function for producing a relatively calm sea area behind it.

Construction of The prototype was completed by May 1998. Following construction, the prototype was towed to the test location near the mouth of Gokasho Bay in Mie Prefecture. The open sea tests were begun in September 1998, after final positioning and mooring operations were completed as shown in Figure 1. The tests are still continuing and results are expected to provide a realistic understanding of the performance, safety, and economic features of the device.

This paper presents an outline of the prototype and study of multi-purpose utilization of Mighty Whale considering from the standpoint of technology in ocean utilities.

 

328-2.gif

Figure 1 The prototype of Mighty Whale

 

2. Outline of the prototype of Mighty Whale(1),(2)

2.1 Environmental conditions for the system design

The environmental conditions associate with environmental loading depend on the assumed return period for the system design. The assumed return period determines the severity of the wind/wave conditions (caused for instance by an extreme tyhoon) to which the structure may be subjected at least once.

 

* Japan Marine Science and Technology Center

2-15 Natsushima-cho, Yokosuka 237-0061 JAPAN

Fax: +81-468-67-0970, E-mail: washioy@jamstec.go.jp

 

 

 

前ページ   目次へ   次ページ

 






サイトに関するご意見・ご質問・お問合せ   サイトマップ   個人情報保護

日本財団会長笹川陽平ブログはこちら



ランキング
注目度とは?
成果物アクセスランキング
1,390位
(28,998成果物中)

成果物アクセス数
6,018

集計期間:成果物公開〜現在
更新日: 2017年8月19日

関連する他の成果物

1.神戸港を起点とする海上観光航路の開発に関する研究
  [ 同じカテゴリの成果物 ]


アンケートにご協力
御願いします

この成果物は
お役に立ちましたか?


とても役に立った
まあまあ
普通
いまいち
全く役に立たなかった


この成果物をどのような
目的でご覧になりましたか?


レポート等の作成の
参考資料として
研究の一助として
関係者として参照した
興味があったので
間違って辿り着いただけ


ご意見・ご感想

ここで入力されたご質問・資料請求には、ご回答できません。






その他・お問い合わせ
ご質問は こちら から