The effect of chemical surfactants on the absorption performance during NH3/H2O bubble absorption process |
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| Authors: | Jin-Kyeong Kim Jun Young Jung Jung Hwan Kim Moo-Geun Kim T Kashiwagi Yong Tae Kang |
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| Affiliation: | aSchool of Mechanical and Industrial System Engineering, Kyung Hee University, Yong In, Gyeong-gi 449-701, South Korea;bSchool of Mechanical and Automotive Engineering, Inje University, Kyongnam 621-749, South Korea;cGraduate School of BASE, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-0012, Japan |
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| Abstract: | The objectives of this paper are to visualize the bubble behavior by shadow graphic method, to examine the effect of surfactants on the bubble type absorption, and to find the optimal conditions to design highly effective compact absorber for NH3/H2O absorption system. The initial concentrations of NH3/H2O solution and the kinds and the concentrations of surfactants are considered as key parameters. By measuring the absorption rate for each condition, two effects of the addition of surfactants, the Marangoni and the barrier effect, are compared with each other. The results show that the addition of surfactant enhances the absorption performance up to 4.81 times. The experimental correlations of the effective absorption ratio for each surfactant, 2-ethyl-1-hexanol, n-octanol, and 2-octanol, are suggested within ±15, ±10, and ±10%, respectively. |
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| Keywords: | Absorption system Ammonia-water Experiment Additive Surface tension Imaging Bubble Measurement AbsorptionMots clé s: Systè me à absorption Ammoniac-eau Expé rimentation Additif Tension superficielle Imagerie Bulle Mesure Absorption |
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