Correlation of the Growth Rate of the Hydrate Layer at a Guest/Liquid-Water Interface to Mass Transfer Resistance

Growth rate of a hydrate layer at the guest/liquid-water interface is analyzed considering the conjugate process of the mass-transfer and hydrate crystal growth. Hydrate-layer growth rate data in the literature are often compiled according to the system subcooling (∆T ≡ Teq − Tex, where Teq is the e...

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Main Authors: Ryo Ohmura, Masatoshi Kishimoto
Format: Article
Language:English
Published: MDPI AG 2012-01-01
Series:Energies
Subjects:
Online Access:http://www.mdpi.com/1996-1073/5/1/92/
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author Ryo Ohmura
Masatoshi Kishimoto
author_facet Ryo Ohmura
Masatoshi Kishimoto
author_sort Ryo Ohmura
collection DOAJ
description Growth rate of a hydrate layer at the guest/liquid-water interface is analyzed considering the conjugate process of the mass-transfer and hydrate crystal growth. Hydrate-layer growth rate data in the literature are often compiled according to the system subcooling (∆T ≡ Teq − Tex, where Teq is the equilibrium dissociation temperature of the hydrate and Tex is the system temperature), suggesting predominant heat transfer limitations. In this paper, we investigate how the existing data on hydrate-layer growth is better correlated to mass transfer of the guest species in liquid water in three-phase equilibrium with bulk guest fluid and hydrate. We have analyzed the conjugate processes of mass-transfer/hydrate-layer-growth following our previous study on the hydrate crystal growth into liquid water saturated with a guest substance. A dimensionless parameter representing the hydrate-layer growth rate is derived from the analysis. This analysis is based on the idea that the growth rate is controlled by the mass transfer of the hydrate-guest substance, dissolved in the bulk of liquid water, to the front of the growing hydrate-layer along the guest/water interface. The variations in the hydrate-layer growth rate observed in the previous studies are related to the dimensionless parameter.
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spelling doaj.art-e2f959c3a278440b88d063c5b3b011b62022-12-22T04:27:28ZengMDPI AGEnergies1996-10732012-01-01519210010.3390/en5010092Correlation of the Growth Rate of the Hydrate Layer at a Guest/Liquid-Water Interface to Mass Transfer ResistanceRyo OhmuraMasatoshi KishimotoGrowth rate of a hydrate layer at the guest/liquid-water interface is analyzed considering the conjugate process of the mass-transfer and hydrate crystal growth. Hydrate-layer growth rate data in the literature are often compiled according to the system subcooling (∆T ≡ Teq − Tex, where Teq is the equilibrium dissociation temperature of the hydrate and Tex is the system temperature), suggesting predominant heat transfer limitations. In this paper, we investigate how the existing data on hydrate-layer growth is better correlated to mass transfer of the guest species in liquid water in three-phase equilibrium with bulk guest fluid and hydrate. We have analyzed the conjugate processes of mass-transfer/hydrate-layer-growth following our previous study on the hydrate crystal growth into liquid water saturated with a guest substance. A dimensionless parameter representing the hydrate-layer growth rate is derived from the analysis. This analysis is based on the idea that the growth rate is controlled by the mass transfer of the hydrate-guest substance, dissolved in the bulk of liquid water, to the front of the growing hydrate-layer along the guest/water interface. The variations in the hydrate-layer growth rate observed in the previous studies are related to the dimensionless parameter.http://www.mdpi.com/1996-1073/5/1/92/clathrate hydratecrystal growth ratemass transfer
spellingShingle Ryo Ohmura
Masatoshi Kishimoto
Correlation of the Growth Rate of the Hydrate Layer at a Guest/Liquid-Water Interface to Mass Transfer Resistance
Energies
clathrate hydrate
crystal growth rate
mass transfer
title Correlation of the Growth Rate of the Hydrate Layer at a Guest/Liquid-Water Interface to Mass Transfer Resistance
title_full Correlation of the Growth Rate of the Hydrate Layer at a Guest/Liquid-Water Interface to Mass Transfer Resistance
title_fullStr Correlation of the Growth Rate of the Hydrate Layer at a Guest/Liquid-Water Interface to Mass Transfer Resistance
title_full_unstemmed Correlation of the Growth Rate of the Hydrate Layer at a Guest/Liquid-Water Interface to Mass Transfer Resistance
title_short Correlation of the Growth Rate of the Hydrate Layer at a Guest/Liquid-Water Interface to Mass Transfer Resistance
title_sort correlation of the growth rate of the hydrate layer at a guest liquid water interface to mass transfer resistance
topic clathrate hydrate
crystal growth rate
mass transfer
url http://www.mdpi.com/1996-1073/5/1/92/
work_keys_str_mv AT ryoohmura correlationofthegrowthrateofthehydratelayerataguestliquidwaterinterfacetomasstransferresistance
AT masatoshikishimoto correlationofthegrowthrateofthehydratelayerataguestliquidwaterinterfacetomasstransferresistance