Evaporation characteristics during decompression of liquified CO2 from a conical-shaped vessel

Ibrahim, Osama M.; Hansen, Per Morten; Bjerketvedt, Dag; Vågsæther, Knut

doi:10.1016/j.rineng.2021.100304

Results in Engineering

2021

DOI: 10.1016/j.rineng.2021.100304

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Evaporation characteristics during decompression of liquified CO2 from a conical-shaped vessel

Osama M. Ibrahim

Per Morten Hansen

Dag Bjerketvedt

et al.

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2023

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Cited by 1 publication

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Release of liquid CO2 from the bottom of a duct

Ibrahim,

Gaathaug,

Hansen

et al. 2023

SN Appl. Sci.

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This paper presents experimental results of the rapid phase transition of liquid CO2 released from the bottom of a small rectangular duct (BR). The aim is to consider the factors influencing the phase transitions and the release rate if the rupture area is below the liquid level. The tests are initiated by rupturing the diaphragm separating the test section from an atmospheric chamber. Pressure and temperature measurements are used to analyze the phase transition. Also, a high-speed shadowgraph technique is used to visualize the waves. The results are compared with previous top-release tests (TR), where the rupture area is sited above the liquid level. Test results show that the duct’s outlet flow behavior for the BR differs from the TR tests, wherein the gas/two-phase flow is choking. In the BR tests, the shadowgraph images demonstrate that when the liquid/two-phase flows out, the liquid/vapor interface remains nearly fixed until it breaks up. This behavior indicates that the headspace vapor has little influence on the initial evaporation in the BR tests. The results from the current BR tests indicate a lower degree of superheating than in the TR tests (it decreases by 34% for LVF = 66.0%), and the evaporation rate is 1.2–1.8 times faster. Graphical abstract

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Release of liquid CO2 from the bottom of a duct

Ibrahim,

Gaathaug,

Hansen

et al. 2023

SN Appl. Sci.

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show abstract

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Evaporation characteristics during decompression of liquified CO2 from a conical-shaped vessel

Cited by 1 publication

References 17 publications

Release of liquid CO2 from the bottom of a duct

Release of liquid CO2 from the bottom of a duct

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