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Phase Distribution of the Surfactant 2-Ethyl-Hexanol in Aqueous Lithium Bromide
The work reported in this paper was conducted to improve understanding of absorption enhancement in absorption chillers based on aqueous lithium bromide due to the presence of 2-ethyl-hexanol. This alcohol is a surfactant with limited solubility in aqueous lithium bromide liquid, vapor pressure approximately 1% that of pure water, and a strong affinity for surfaces including solid and liquid. Knowledge of the phase distribution of the surfactant in the vapor and liquid and on the surfaces is necessary for a clear understanding of enhancement physics. It is found that the concentration of alcohol in the vapor is a key variable in characterizing many processes in this system (e.g., absorption and surface tension measurements). This observation about the importance of the surfactant vapor led to the recent development of the vapor surfactant theory of absorption enhancement. This theory is further supported by the results presented here, which include estimates of liquid solubility, surfactant surface concentration and the corresponding surface tension, and vapor concentration.
Phase Distribution of the Surfactant 2-Ethyl-Hexanol in Aqueous Lithium Bromide
The work reported in this paper was conducted to improve understanding of absorption enhancement in absorption chillers based on aqueous lithium bromide due to the presence of 2-ethyl-hexanol. This alcohol is a surfactant with limited solubility in aqueous lithium bromide liquid, vapor pressure approximately 1% that of pure water, and a strong affinity for surfaces including solid and liquid. Knowledge of the phase distribution of the surfactant in the vapor and liquid and on the surfaces is necessary for a clear understanding of enhancement physics. It is found that the concentration of alcohol in the vapor is a key variable in characterizing many processes in this system (e.g., absorption and surface tension measurements). This observation about the importance of the surfactant vapor led to the recent development of the vapor surfactant theory of absorption enhancement. This theory is further supported by the results presented here, which include estimates of liquid solubility, surfactant surface concentration and the corresponding surface tension, and vapor concentration.
Phase Distribution of the Surfactant 2-Ethyl-Hexanol in Aqueous Lithium Bromide
Zhou, X. (author) / Yuan, Z. (author) / Herold, K. E. (author)
HVAC&R Research ; 8 ; 371-381
2002-10-01
11 pages
Article (Journal)
Electronic Resource
Unknown
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