成果報告書詳細
管理番号20150000000158
タイトル*平成26年度中間年報 水素利用技術研究開発事業 燃料電池自動車及び水素ステーション用低コスト機器・システム等に関する研究開発 樹脂製ライナー低コスト複合容器蓄圧器の開発(八千代工業、東邦テナックス)
公開日2015/6/23
報告書年度2013 - 2015
委託先名八千代工業株式会社 東邦テナックス株式会社
プロジェクト番号P13002
部署名新エネルギー部
和文要約
英文要約Title: Hydrogen Utilization Technology Development / Research and Development of Low-cost Equipment and System for Fuel Cell Vehicles and Hydrogen Stations / Development of low cost composite vessel for plastic liner. (FY2013-FY2015)FY2014 Annual Report

In order to cut down the cost for hydrogen gas vessel at hydrogen gas station with regard to this project, the technology development for the large size type 4 composite cylinder will be implemented for practical use. For the fiscal year 2014, the feasibility of the type 4 container was verified by a continuation of the fundamental experiment since 2013 and a small prototype container. 1) Feasibility study of the enlargement of Type 4 container: Based on the issue identified in 2013, the verification items of production and performance were planned by a small container prototype. 2) Evaluation of plastic liner material: Subsequent to 2013, we conducted the exposure experiment by using the technique of a simplified simulation of the hydrogen filling and release processes to the container. For this year, exposure condition was determined based on the calculation of the liner wall temperatures varying in conditions close to the actual use of the accumulator by a heat analysis simulation. Based on the simulation, the wall temperature of a plastic liner was 64℃ with the summertime of 10min filling, and -35℃with the wintertime of 43s release by 1 bank of the storage cylinders. 3) Correlation of CAE: By lowering the priority for the optimization Study of FW regarding the correlation of FW CAE, it was decided to proceed with priority issues related to manufacturing and performance derived from the large plastic liner. Currently the problem that is assumed for the large size of a plastic liner has been verified by CAE. 4)5) Liner structure / process study and the production of the prototype: It was determined that a seamless liner by rotational molding was difficult for eliminating the trouble of manufacturing with the limited time. Then it was switched to the process of welding injection/extrusion made parts. The pressure resistance was satisfied with the design pressure of the weld (@ room temperature). It is currently being evaluated with respect to durability performance. The seal performance of nozzle-boss under high temperature and low temperature environment was evaluated in a test tube-shaped test piece. The seal structure could be ensured -35℃ sealing performance even if it is set at a compression rate with the lower generic EPDM O-RING. High-temperature region of 85℃ was confirmed that the permanent set was within the design assumptions due to creep of the sealing surface at nominal compression rate. 6) Development of optimized CF: To examine the effect on pressure vessel by CF property, burst pressure of CFRP vessel has being evaluated with existing CF which strength and modulus are different. 7) Development of sizing agent: To improve the inner quality in pressure vessel, reduction of fuzz level and variation of resin content (RC) has been examined. By the uniformity of impregnation of sizing agent, fuzz level and variation of CF width on kiss-touch roll have been improved. Also, burst pressure of CFRP vessel has been better than before.
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