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Improved absorption in gas−liquid systems by the addition of a low surface tension component in the gas and/or liquid phase / Nai-Hsuan Yang ; Yi-Jen Chen ; Chien-Chih Liao ; Tsair-Wang Chung in Industrial & engineering chemistry research, Vol. 47 n°22 (Novembre 2008) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 47 n°22 (Novembre 2008) . - p. 8823–8827 Titre : Improved absorption in gas−liquid systems by the addition of a low surface tension component in the gas and/or liquid phase Type de document : texte imprimé Auteurs : Nai-Hsuan Yang, Auteur ; Yi-Jen Chen, Auteur ; Chien-Chih Liao, Auteur ; Tsair-Wang Chung, Auteur Année de publication : 2008 Article en page(s) : p. 8823–8827 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Gas−Liquid Résumé : If a system uses the phenomenon of Marangoni convection, there will be more interfacial turbulence and this may dominate the mass transfer performance between the gas and liquid phases. Marangoni convection was applied in a gas−liquid contact device (dehumidifier) in this study to measure the effect of interfacial turbulence on the water vapor removal efficiency caused by adding a low surface tension component (99.5% ethanol) into the gas or liquid phase at room temperature. The differences in water vapor removal efficiency under different conditions with and without the addition of ethanol into the moist air or working solution (38−42 wt % aqueous lithium chloride solution) were observed. Since the Marangoni effect was more pronounced when the concentration of working solution was greater than a specific value, the trend line for water vapor removal efficiency in different solution concentrations was presented as a broken line in this study. The break in the trend line is the critical concentration of the working solution, and the value is about 40 wt % of aqueous lithium chloride solution. The experimental results show that addition of low surface tension ethanol into the gas phase was better than adding it into the liquid phase for the interfacial mass transfer performance in this gas−liquid contact device. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800316n [article] Improved absorption in gas−liquid systems by the addition of a low surface tension component in the gas and/or liquid phase [texte imprimé] / Nai-Hsuan Yang, Auteur ; Yi-Jen Chen, Auteur ; Chien-Chih Liao, Auteur ; Tsair-Wang Chung, Auteur . - 2008 . - p. 8823–8827. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 47 n°22 (Novembre 2008) . - p. 8823–8827 Mots-clés : Gas−Liquid Résumé : If a system uses the phenomenon of Marangoni convection, there will be more interfacial turbulence and this may dominate the mass transfer performance between the gas and liquid phases. Marangoni convection was applied in a gas−liquid contact device (dehumidifier) in this study to measure the effect of interfacial turbulence on the water vapor removal efficiency caused by adding a low surface tension component (99.5% ethanol) into the gas or liquid phase at room temperature. The differences in water vapor removal efficiency under different conditions with and without the addition of ethanol into the moist air or working solution (38−42 wt % aqueous lithium chloride solution) were observed. Since the Marangoni effect was more pronounced when the concentration of working solution was greater than a specific value, the trend line for water vapor removal efficiency in different solution concentrations was presented as a broken line in this study. The break in the trend line is the critical concentration of the working solution, and the value is about 40 wt % of aqueous lithium chloride solution. The experimental results show that addition of low surface tension ethanol into the gas phase was better than adding it into the liquid phase for the interfacial mass transfer performance in this gas−liquid contact device. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800316n