成果報告書詳細
管理番号20090000000683
タイトル*平成20年度中間年報 水素製造・輸送・貯蔵システム等技術開発 水素ステーション機器要素技術に関する研究開発 都市型コンパクト水素ステーションの研究開発
公開日2010/3/2
報告書年度2008 - 2008
委託先名清水建設株式会社 岩谷産業株式会社
プロジェクト番号P08003
部署名燃料電池・水素技術開発部 水素グループ
和文要約以下本編抜粋:1. 研究開発の内容及び成果等 (1)コンパクト水素ステーションの試設計 a. 本研究開発における安全の定義とコンパクト化検討フロー 単なるダウンサイジングではないコンパクト化を達成するために、コンパクト化検討フローを策定した。まず、現行の法規制に則り、ベースとなる水素ステーションの機器配置を確定した。1)コンパクト化を検討する際、このベースとなる水素ステーションで保証された安全性はそのままに、コンパクト化を図り、2)機器配置、土木建築、社会便益等を踏まえ安全性の検証を実施し、3)コンパクト化した水素ステーションが最適であるか否かの判断を行っていくこととした。そして、最適であると判断されるまで、これら1)-3)のループを繰返し検証することとした。さらに、このコンパクト化された水素ステーションに、安全要素技術の適用検討を行い、コストを鑑みつつ多重防護による安全性を確保することとした。
英文要約Title: Research and Development of Compact Hydrogen Station for Urban Areas Use (FY2008-FY2010) FY2008 Annual Report
In trial design of compact hydrogen stations, we established a design procedure of compact hydrogen stations, which are not only downsized from previous stations. We first reviewed related laws and regulations to clarify the design prerequisites, and created fundamental design concepts particularly for an accumulation of released gas, safety distance, countermeasures for preventing, and the like. We also determined specifications, sizes, and other parameters of the component units of the hydrogen stations for all generations from the early stage of introduction to the full-scale proliferation stage. We completed a basic layout (off-site type, a site area of 1200 square meters) of a hydrogen station on the basis of the prerequisites, and performed modeling and analysis of compacted hydrogen stations. As results of the modeling, the hydrogen stations with 390 square meters and 560 square meters were designed, and their safety performances and efficiencies were evaluated. In development of Safety Technology for Compact Hydrogen Station, a survey of previous research was carried out on blast impact energy absorption structures. Numbers of research on blast loading due to bomb explosion with different impact characteristics from hydrogen explosion were found, however, there was no past research on blast energy absorption structures due to hydrogen explosion. On the other hand, several numerical studies on the interaction between fluid and structures have been performed, and the research results could be exploited in the present project. We conducted diffusion simulation for leaked hydrogen gas based on accident scenario and we confirmed the high concentration region and dispersion characteristics. We developed a numerical code for blast wave propagation in a confined space and we conducted the numerical simulation for simple model. Hydrogen blast energy absorption walls were investigated for the purpose that the damage outside the hydrogen station could be minimized. The following effects were anticipated for the energy absorption walls: 1) reduction of peak blast pressure; 2) suppression of multiple wave reflection on the interior surfaces. Mechanism of blast energy absorption was classified into three, i.e., 1) elasto-plastic; 2) fracture; 3) fluid damaging. A simple lumped mass vibration model was adopted to explore simplified structural mechanics model for an optimal energy absorption wall. To verify the load carrying characteristics and plastic response of the blast energy absorption wall, more detailed numerical continuum analysis was performed for the wall by utilizing general purpose finite element code DIANA.
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