Abstract
The void fraction and vapor quality are important parameters for characterizing the gas–liquid two-phase flow. However, neither an established void fraction measurement method nor a verified void fraction – vapor quality interconversion model is available for the two-phase hydrogen flow. The object of this study is the development of a void fraction measurement technique and the investigation of the void fraction–quality correlations. A capacitive void fraction sensor was developed using the electric field analysis (EFA) and design of experiment (DOE), and it was applied in a boiling hydrogen experimental facility. The experimental conditions were as follows: the inner diameter of the heating pipe was 15 mm, the mass flux was ranged from 50 to 110 kg/m2s, and the static pressure was ranged from 250 to 300 kPaA. Further, the correlation between the thermal equilibrium quality (χac=− 0.03–0.14) and void fraction (α = 0–70%) was compared with that obtained in previously proposed models, and the void fraction – actual quality – thermal equilibrium quality interconversion models applicable to the boiling hydrogen flow were investigated. It was observed that the combination of the Sekoguchi model for thermal equilibrium quality – actual quality conversion and the Steiner drift-flux model for actual quality – void fraction conversion agreed well with the experimental results.
Original language | English |
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Pages (from-to) | 18483-18495 |
Number of pages | 13 |
Journal | International Journal of Hydrogen Energy |
Volume | 44 |
Issue number | 33 |
DOIs | |
Publication status | Published - 2019 Jul 5 |
Keywords
- Boiling
- Capacitive sensor
- Hydrogen
- Two-phase flow
- Vapor quality
- Void fraction
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment
- Fuel Technology
- Condensed Matter Physics
- Energy Engineering and Power Technology