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

Safe transport of pressurized CO2 requires a profound knowledge of the processes' effect during the phase transition on catastrophic failure of a tanker filled with liquid CO2. This study presents experimental results and analyses associated with the characteristics of expansion waves during de...

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Autores principales:	Osama M. Ibrahim, Per Morten Hansen, Dag Bjerketvedt, Knut Vågsæther
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	CO2 depressurization Divergent cross-section Evaporation wave Isentropic expansion Metastable state Technology T
Acceso en línea:	https://doaj.org/article/979dc5ec1b1e4002b54ea2ab9a3420c2
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spelling	oai:doaj.org-article:979dc5ec1b1e4002b54ea2ab9a3420c22021-11-18T04:51:21ZEvaporation characteristics during decompression of liquified CO2 from a conical-shaped vessel2590-123010.1016/j.rineng.2021.100304https://doaj.org/article/979dc5ec1b1e4002b54ea2ab9a3420c22021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2590123021001055https://doaj.org/toc/2590-1230Safe transport of pressurized CO2 requires a profound knowledge of the processes' effect during the phase transition on catastrophic failure of a tanker filled with liquid CO2. This study presents experimental results and analyses associated with the characteristics of expansion waves during depressurization of liquified CO2 in a divergent cross-section vessel. It explores the rarefaction and evaporation waves velocities analyzed in different three vessel's regions based on the pressure records. Results showed that the evaporation wave velocity increased downward with decreasing cross-section and increased liquid volume fraction. Also, the upstream state properties after the isentropic expansion in the metastable region were determined. The results were compared with previously achieved outcomes of CO2 decompression from a constant cross-section rectangular duct.Comparisons indicated significant differences in the wave pattern. So, expansion waves velocities varying in different vessel regions while they were nearly constant for the duct. The evaporation wave velocities were nearly identical for the duct and the upper conical vessel's regions. But their divergence increased as the evaporation wave propagated downwards. Furthermore, the downstream two-phase flow in the conical vessel propagated in an increased cross-section toward the exit. In comparison, there was non-spontaneous two-phase propagation behind the evaporation wave due to the small exit cross-section in the rectangular duct. Additionally, during the isentropic expansion, the degree of superheat was higher for the conical vessel than the duct, resulting in significant discrepancies in the upstream flow properties.Osama M. IbrahimPer Morten HansenDag BjerketvedtKnut VågsætherElsevierarticleCO2 depressurizationDivergent cross-sectionEvaporation waveIsentropic expansionMetastable stateTechnologyTENResults in Engineering, Vol 12, Iss , Pp 100304- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	CO2 depressurization Divergent cross-section Evaporation wave Isentropic expansion Metastable state Technology T
spellingShingle	CO2 depressurization Divergent cross-section Evaporation wave Isentropic expansion Metastable state Technology T Osama M. Ibrahim Per Morten Hansen Dag Bjerketvedt Knut Vågsæther Evaporation characteristics during decompression of liquified CO2 from a conical-shaped vessel
description	Safe transport of pressurized CO2 requires a profound knowledge of the processes' effect during the phase transition on catastrophic failure of a tanker filled with liquid CO2. This study presents experimental results and analyses associated with the characteristics of expansion waves during depressurization of liquified CO2 in a divergent cross-section vessel. It explores the rarefaction and evaporation waves velocities analyzed in different three vessel's regions based on the pressure records. Results showed that the evaporation wave velocity increased downward with decreasing cross-section and increased liquid volume fraction. Also, the upstream state properties after the isentropic expansion in the metastable region were determined. The results were compared with previously achieved outcomes of CO2 decompression from a constant cross-section rectangular duct.Comparisons indicated significant differences in the wave pattern. So, expansion waves velocities varying in different vessel regions while they were nearly constant for the duct. The evaporation wave velocities were nearly identical for the duct and the upper conical vessel's regions. But their divergence increased as the evaporation wave propagated downwards. Furthermore, the downstream two-phase flow in the conical vessel propagated in an increased cross-section toward the exit. In comparison, there was non-spontaneous two-phase propagation behind the evaporation wave due to the small exit cross-section in the rectangular duct. Additionally, during the isentropic expansion, the degree of superheat was higher for the conical vessel than the duct, resulting in significant discrepancies in the upstream flow properties.
format	article
author	Osama M. Ibrahim Per Morten Hansen Dag Bjerketvedt Knut Vågsæther
author_facet	Osama M. Ibrahim Per Morten Hansen Dag Bjerketvedt Knut Vågsæther
author_sort	Osama M. Ibrahim
title	Evaporation characteristics during decompression of liquified CO2 from a conical-shaped vessel
title_short	Evaporation characteristics during decompression of liquified CO2 from a conical-shaped vessel
title_full	Evaporation characteristics during decompression of liquified CO2 from a conical-shaped vessel
title_fullStr	Evaporation characteristics during decompression of liquified CO2 from a conical-shaped vessel
title_full_unstemmed	Evaporation characteristics during decompression of liquified CO2 from a conical-shaped vessel
title_sort	evaporation characteristics during decompression of liquified co2 from a conical-shaped vessel
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/979dc5ec1b1e4002b54ea2ab9a3420c2
work_keys_str_mv	AT osamamibrahim evaporationcharacteristicsduringdecompressionofliquifiedco2fromaconicalshapedvessel AT permortenhansen evaporationcharacteristicsduringdecompressionofliquifiedco2fromaconicalshapedvessel AT dagbjerketvedt evaporationcharacteristicsduringdecompressionofliquifiedco2fromaconicalshapedvessel AT knutvagsæther evaporationcharacteristicsduringdecompressionofliquifiedco2fromaconicalshapedvessel
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Evaporation characteristics during decompression of liquified CO2 from a conical-shaped vessel

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