Metrology infrastructure for high-pressure gas and liquified hydrogen flows : a brief outline of the MetHyInfra project, measurement challenges, and first results

Böckler, H.-B. (author), de Huu, M. (author), Maury, Rémy (author), Schmelter, S. (author), Schakel, M. D. (author), Büker, O. (author), Kutin, Jože (author), Bobovnik, Gregor (author), Wedler, C. (author), Trusler, J. P. M. (author), Thol, M. (author), Weiss, S. (author), Günz, C. (author), Schumann, D. (author), Gugole, F. (author)

This paper gives an overview of the ongoing Joint Research Project (JRP) 20IND11 “Metrology infrastructure for high pressure gas and liquefied hydrogen flows” (MetHyInfra), which will ensure traceability in the hydrogen distribution chain. For this purpose, very precise nozzles with well-defined geometries have been produced. In this project, Critical Flow Venturi Nozzles (CFVNs) will be traceably calibrated for the first time with hydrogen and pressures up to 100 MPa using a Coriolis Flow Meter (CFM) as a secondary standard. A CFM has been successfully calibrated with hydrogen against a gravimetric primary standard. Equations of State (EoS) are important for the high-pressure calibration of the nozzles, but also for Computational Fluid Dynamics (CFD) simulations. With regard to CFD, a numerical model has been developed to simulate high pressure hydrogen flow in the CFVN. In a parameter study, non-ideal nozzle shapes are investigated using a shape variation parameter. New Speed of Sound (SoS) measurements were conducted at temperatures from 273 to 323 K and pressures from 1 to 100 MPa. These new data were then used to develop a new EoS for normal hydrogen, optimized for gas phase calculations. In addition to gaseous hydrogen, the project has a strong focus on liquefied hydrogen. Here a three-pronged approach allows traceable measurements. Each of the approaches presented is based on a unique flow calibration principle and relies on independent traceability schemes. The results of the project will ensure traceable measurements and thus a higher level of confidence among end users.

• Language: English
• Keywords: hydrogen, critical flow Venturi nozzles, CFD, equation of state, traceability
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FS - Faculty of Mechanical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2024
• Number of pages: 12 str.
• Numbering: Vol. 232, art. 114675
• PID: 20.500.12556/RUL-155720
• UDC: 532
• ISSN on article: 1873-412X
• DOI: 10.1016/j.measurement.2024.114675
• COBISS.SI-ID: 192327939
• Publication date in RUL: 12.04.2024

Record is a part of a journal

• Title: Measurement
• Publisher: Elsevier
• ISSN: 1873-412X
• COBISS.SI-ID: 23272709

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: vodik, kritične Venturijeve šobe, računalniška dinamika tekočin, enačba stanja, sledljivost