成果報告書詳細
管理番号20120000000538
タイトル*平成23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 直接充填方式水素ステーション用圧縮機の研究開発
公開日2013/3/20
報告書年度2011 - 2011
委託先名株式会社神戸製鋼所
プロジェクト番号P08003
部署名新エネルギー部
和文要約和文要約等以下本編抜粋:
l 共同研究の内容及び成果等
(1)耐水素脆化材料の調査および選定
・高圧の接ガス部の材料については、水素脆化の影響が懸念され材料の使用が制限されている。現在高圧ガス保安法上一般的に認められているSUS316L材では、強度が十分でなく肉厚が過大となり大型化する(シリンダ等)、市販性のあるもので成立しない(吐出の配管等)等の問題があり、耐水素脆化材料を調査した結果、実用的な材料として、シリンダ材にSUH660相当材、パイプ等にSUS31612%NICW (冷問加工材)を候補として選定し、設計に必要な材料強度を決定した。
-さらに、水素環境での試験デー夕、関連文献等の技術データを入手、また社内で蓄積された知見を集約し耐水素脆化に対する見解をまとめ、高圧ガス保安協会と材料の特認申請の対応について協議を重ねた。3月末の審査結果ではSUS316 12%Ni CW材は合格となったが、SUH660相当材は、条件付きとなり、対応を継続することとした。
英文要約Title:Development of Technologies for Hydrogen Production, Delivery and Storage Systems. Research and Development of Elemental Technologies for Hydrogen Station Components. Research and Development of Direct Filling Type Compressor for Hydrogen Station (FY2011-FY2012) FY2011 Annual Report

(1) The material which comes into contact with high-pressure hydrogen is limited because of the influence of hydrogen embrittlement. We have investigated the material resistance to hydrogen embrittlement. As a result, we selected a candidate material.
We have collected test data and technical data in hydrogen environment from relevant documents, and consolidated the accumulated knowledge in-house. We have summarized the views on hydrogen embrittlement resistance, and have consulted with KHK (The High Pressure Gas Safety Institute of Japan).

(2) We made the basic design for both a low-pressure hydrogen compressor and a high-pressure hydrogen compressor. We determined the basic structure and materials required for the verification and validation of equipment performance. We have investigated the challenges and constraints required for the commercialization of the high-pressure hydrogen compressor in the High Pressure Gas Safety Law.
We have made a more detailed design of both the low-pressure and the high-pressure hydrogen compressors. Especially, we adopted a water-cooled structure for the cylinder in order to improve the reliability of the piston rings to seal the gas.

(3) We have developed a simulation program which calculates the optimum hydrogen flow rate in accordance with the time variation of pressure and temperature of the automotive tank.
Based on the program, we have discussed the flow rate of the hydrogen compressors with HySUT (The Research Association of Hydrogen Supply/Utilization Technology).

(4) We have made a study of test methods and equipment in order to verify the performance of the high-pressure hydrogen compressor.
We had meetings with users (such as HySUT) who use the high-pressure hydrogen compressor and conducted hearings about the compressor required specifications and how to operate the compressor in the suitably-equipped fuel stations in the future.

(5) We hold committees with users twice in order to obtain their demands. As a result, we knew their strong needs for compact compressors.
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