成果報告書詳細
管理番号20150000000189
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 水素ステーションの高圧水素用ホースとシールシステムに関する研究開発(NOK)
公開日2015/12/19
報告書年度2014 - 2014
委託先名NOK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:“Research and Development of Technology for Hydrogen Utilization/ Research and Development of Low-cost Equipment and System for Fuel Cell Vehicles and Hydrogen Stations/ Research and Development of Low-cost Equipment, System and their Materials for Hydrogen Stations/ Research and Development of High-pressure Hydrogen Hose and Sealing System for Hydrogen Stations/” FY2014 Annual Report from FY2013 to FY2015
The rubber material and design for high-pressure hydrogen sealing system was pointed by systematic material data influenced by high-pressure hydrogen. For some time in the future, it is important research for seal durability, reliability and safety of hydrogen system. In addition, low-cost and long-life technologies are considerable issues due to an extended use of power energy generated by fuel cell system. Therefore gathering technical data and study of rubber material are conducted continuously in order to solve these technical problems.
In FY2014, we have evaluated about research for high-pressure hydrogen sealability in low-temperature environment and permeability of sealing rubber material as O-ring. The main content of execution in FY2014 is as follows:
(1) Research of sealing rubber material for high-pressure hydrogen
(1-1) High-pressure hydrogen sealability of rubber O-ring in low-temperature environment
This study determined a high-pressure hydrogen sealing or leakage behavior under low-temperature environment. The results clarified the sealing limit temperature of various rubber materials. The leakage behavior depends on rubber material due to material properties.
(1-2) High-pressure hydrogen permeability of rubber O-ring by developed permeation tester
This study determined the parameters of property of rubber material of transmitting high-pressure hydrogen by passage through inner surface and out at outer surface by diffusion and sorption processes using some kinds of commodity O-rings for gas seal. A lot of data of hydrogen transport parameters were gathered by the permeation tests. These results indicate that the permeation curve and behavior depends on each rubber material and standardized permeability or hydrogen contents were compared with each rubber materials.
(2) Establishment of technical assessment for measuring high-pressure hydrogen property
The technical assessment for measuring permeability in high-pressure hydrogen was developed with O-ring specimen. A high precision and reproducible permeation curve was obtained with this assessment. These obtained data will be discussed and cross-checked with Kyusyu-university in next phase.
(3) Optimization of design for rubber O-ring.
Optimum O-ring design in high-pressure hydrogen is not known. So, we studied the optimization of groove design for cylindrical-face seal by long-term pressure hydrogen cycle test. At the interim result, O-ring had minor squeeze-out mark, but it could keep seal ability, and groove design range in high-pressure hydrogen may be narrower than standard one.
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