成果報告書詳細
管理番号20150000000173
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 水素ステーションにおける水素計量管理方法に関する研究開発(産業技術総合研究所)
公開日2015/5/29
報告書年度2014 - 2014
委託先名独立行政法人産業技術総合研究所
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 for Low Cost Facilities and Systems for FCV and Hydrogen Infrastructure / Research and development of metrological control techniques at hydrogen supplying station (FY2013-FY2015) FY2014 Annual Report

We performed the researches on the development of calibration facility with master-meter method and the optimization of the critical nozzle.
The characteristic test of the critical nozzles with different throat diameter was carried out at the high-pressure hydrogen. The critical back-pressure ratio was between 0.93 and 0.95 at the stagnation pressure between 15 MPa and 35 MPa in the case of all critical nozzles. The discharge coefficient decreased with increasing the stagnation pressure qualitatively, though the there were quantitative discrepancy among them.
We also carried out the EFD/CFD study for optimizing of critical nozzle flow meter. The test conditions are from 1.6 ×104 to 1.2×105 at Reynolds number. The evaluated characteristics are the discharge coefficient of the critical nozzles. The significant differences were not able to confirm between EFD and CFD. These results show that CFD can reproduce the EFD results well.

We published the guideline, whose title is "Operative Guideline on Hydrogen Metering Management", prior to the start of the commercial hydrogen station and submitted it to the trade group. The guideline was established on December 16 and was taken effect.

We performed twice business trip to the USA for the purposes of the progress situation and an argument on hydrogen infrastructures. We think that the results by these business trips will become very significant in the future revision of the above-mentioned "Operative Guideline on Hydrogen Metering Management".

The present project will perform more detail studies for optimizing the characteristics of the critical nozzles, as future investigation.
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