Application of a combined capacitive flow velocity and density sensor for the measurement of liquid hydrogen mass flow

Author

Holler, Gert ; Hrach, Daniel ; Fuchs, Adi ; Brasseur, Georg

Author_Institution

Inst. of Electr. Meas. & Meas. Signal Process., Graz Univ. of Technol., Graz, Austria

fYear

2009

fDate

5-7 May 2009

Firstpage

1444

Lastpage

1448

Abstract

The paper presents a capacitance-based measurement approach for measuring the flow velocity and the mean density of liquid hydrogen flows. The sensor allows for the measurement of liquid hydrogen flow velocity exploiting a spatial frequency based method for observing gaseous hydrogen bubbles moving through the sensing volume. Additionally, electrodes at both ends of the sensing section are used to determine the mean density of the cryogenic liquid (i.e. the liquid phase fraction inside the pipe). Measurement results for the flow velocity and the mass flow are presented.

Keywords

bubbles; capacitive sensors; cryogenics; density measurement; flow sensors; hydrogen; velocity measurement; H₂; capacitance-based measurement approach; cryogenic liquid; density sensor; flow velocity measurement; gaseous hydrogen bubble; liquid hydrogen mass flow; Capacitance measurement; Capacitive sensors; Density measurement; Fluid flow; Fluid flow measurement; Frequency measurement; Gas detectors; Hydrogen; Velocity measurement; Volume measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2009. I2MTC '09. IEEE

Conference_Location

Singapore

ISSN

1091-5281

Print_ISBN

978-1-4244-3352-0

Type

conf

DOI

10.1109/IMTC.2009.5168682

Filename

5168682