著者

渡辺 健次 森下 輝夫 内藤 正一 菅 進

出版者

運輸省船舶技術研究所

雑誌

船舶技術研究所報告 (ISSN:0495775X)

巻号頁・発行日

vol.20, no.2, pp.93-128, 1983

被引用文献数

2

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This project is for hydrogen production with solar energy on a huge raft floating on the South Pacific Ocean and for transport of liquified hydrogen. In previous papers, authors proposed a new raft system and showed that the system is efficient for collecting solar energy and able to follow solar motion in the range of allowable error. In this paper, the feasibility on the total plan is studied from technical view point and other ploblems are investigated ; the polution and efficiency reduction of reflecting mirrors by sea-salt particles, transport of liquified hydrogen by tankers and meteorogical and ecological influence by the existence of huge raft floating on ocean are discussed. Energy conversion ratio is about 20 per cent and total liquified hydrogen income of the system is about 5,000 ton per year. Consequently the project is feasible from technical view point.

著者

遠藤 久芳 菅 信 大松 重雄 山川 賢次 菅 進 渡辺 健次

出版者

運輸省船舶技術研究所

雑誌

船舶技術研究所報告 (ISSN:0495775X)

巻号頁・発行日

vol.19, no.4, pp.257-283, 1982

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The study had been started from the review^<19)> of "Plan of Ocean Raft System for Hydrogen Economy"^<1)> which was proposed by Ohta^<1)> and Veziroglu in 1977. The project was for hydrogen production with solar energy on a huge raft floating on the South Pacific Ocean and for transport of liquefied hydrogen.Since their raft system was found to have some fatal defects in hydrodynamical and structural characteristics, an alternative plan of new raft system was proposed in which those defects are improved.In these papers (three reports will continue after this), authors carried out the feasibility study on the total plan only from technical view point. Economical view point was excluded here.In the first report, a new raft system is proposed as an alternative one. After natural condition such as wave, current and wind of the concerned area (8°S, 138°W) was surveyed, environmental force was estimated and the behavior of the raft was investigated both analytically and experimentally. Detail design of each structural members was conducted under consideration of the structural response for the load mentioned.The new raft system proved to be efficient for collecting solar energy and to be superior in hydrodynamical and structural characteristics.