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Pressure recovery during pressure reduction experiment with large-scale liquid hydrogen tank
- Source :
- International Journal of Hydrogen Energy. 46:29583-29596
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- The world's first Liquefied Hydrogen (LH2) Carrier which will transport LH2 from Australia to Japan has been built. At Japanese port, reducing the tank pressure will be required for the safe tank operation. However, pressure reduction will cause flashing, leading to an excess of the venting capacity or liquid leakage. Hence, the purpose of this research is to clarify the pressure reduction rate and liquid behavior through experimental and numerical approaches respectively. Pressure reduction experiment under high liquid level condition was conducted by using 30 m3 tank filled with saturated LH2. The experiment showed that the pressure recovery occurred at the beginning of depressurization, and then the pressure decreased based on the equilibrium state. From numerical analysis by VOF based in-house CFD code, it was found that the pressure recovery was caused by the boiling delay, and the tank pressure followed the saturation pressure after the liquid fully stirred.
- Subjects :
- Hydrogen
Renewable Energy, Sustainability and the Environment
Vapor pressure
Thermodynamic equilibrium
Energy Engineering and Power Technology
chemistry.chemical_element
02 engineering and technology
Mechanics
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Flashing
01 natural sciences
0104 chemical sciences
Superheating
Fuel Technology
chemistry
Cabin pressurization
Volume of fluid method
Environmental science
0210 nano-technology
Liquid hydrogen
Subjects
Details
- ISSN :
- 03603199
- Volume :
- 46
- Database :
- OpenAIRE
- Journal :
- International Journal of Hydrogen Energy
- Accession number :
- edsair.doi...........88d383ceb99386c423fd7aa517daaf0f