成果報告書詳細
管理番号20160000000208
タイトル*平成27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(4)
公開日2016/8/26
報告書年度2015 - 2015
委託先名岩谷産業株式会社
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 for Low Cost Facilities and Systems for FCV and Hydrogen Infrastructure / Research and development of metrological control techniques at hydrogen supplying station (FY2013-FY2017) FY2015 Annual Report We produced the standard critical nozzle which we could use with high pressure hydrogen and evaluated it. It was confirmed that the coefficient of discharge decreased with the theoretical Reynolds number increase. It was confirmed in the same theoretical Reynolds number that the coefficient of discharge varied according to difference in nozzle diameter. We evaluated the Coriolis type flowmeter using high pressure hydrogen. Relations were provided for a standard flowmeter linearly, and it was confirmed that the influence of the examination pressure was small. We performed the measurement evaluation of the dispenser by the master meter method. In addition, We went about the comparison with the gravity method. (Iwatani Co.) We estimated the influence such as the gas classes which gave it to predictive precision to be the estimate of a highly precise the coefficient of discharged by the CFD analysis and was intended that we reduced the unsureness. We investigate the theoretical Reynolds number and the relations of the critical back pressure ratio, the influence of the pressure change of the lower nozzle exit that gives it to the flow ground of the nozzle throat neighborhood, plural gas class (H2, N2, He), the CFD analysis by the virial equation of state for the low temperature area to flow out, and to give to a coefficient to 90 MPa. (Saga Univ.) The virial equation of state (EOS) for hydrogen used in the CFD analysis of the sonic nozzle flow meter represents the experimental PVT property data accurately, and the other properties such as speed-of-sound and heat capacity are calculated form the EOS using the thermodynamic relations. However, the experimental data of the other properties are currently available at very low temperatures below 100 K, and the reliable data at higher temperatures are highly required for evaluating the reliability of the other properties calculated from the EOS. In this study, an apparatus for the measurement of the speed-of-sound at room temperature and at pressures up to 15 MPa by the spherical resonator method was developed. The speed-of-sound is determined from the measurement of the resonance frequency in the radial mode, and the obtained data are in good agreement with the calculated speed-of-sound from the EOS within 0.2 %. (Kyushu Univ.)
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