Temperature Fluctuations and Heat Transfer in Liquid Drop Columns
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概要
- 論文の詳細を見る
Heat transfer characteristics in a liquid drop column (0.102 m ID×1.8 m in height) have been investigated by analyzing the temperature difference fluctuations between the immersed heater and the column proper. The temperature difference fluctuations are analyzed by resorting to chaos analysis; the fluctuations have been interpreted by means of phase space portraits as well as the Kolmogorov entropy. The effects of dispersed (kerosene) and continuous (water) liquid phase velocities on the temperature difference fluctuations and heat transfer coefficients are determined. To explain the influence of immiscible liquid flow on the heat transfer coefficient, hydrodynamics and phase holdup have also been discussed. It is found that the increase in the velocities of dispersed and continuous liquid phases results in the increase of turbulence in the column, which makes the system more complicated and irregular. The injection of gas (air) or particles (6.0 mm glass bead) into the column can increase the heat transfer coefficient considerably. However, the flow behavior of the immiscible mixture is more irregular and chaotic owing to the injection of gas, whereas the system has been more uniform and periodic by adding the solid particles into the column. The heat transfer coefficient has been correlated well in terms of operating variables.
- 社団法人 化学工学会の論文
著者
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KIM Sang
Department of Metallic and Materials Engineering, Gyeongsang National University
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Kim Jun
Department of Internal Medicine, Chonnam University Medical School
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KANG Yong
Department of Dermatology, Seoul National University College of Medicine, Laboratory of Cutaneous Ag
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Kim Jun
Department Of Chemical Engineering Chungnam National University
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Kim Sang
Department Of Chemical Engineering Kaist
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Kim Sang
Department Of Chem. Eng. The University Of Seoul
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Kang Yong
Department Of Dermatology Seoul National University College Of Medicine
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WOO Kwang
Department of Chemical Engineering, Chungnam National University
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NAM Chang
Water Chemistry & Materials Analysis Group, KEPRI
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Woo Kwang
Department Of Chemical Engineering Chungnam National University
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Kim Jun
Department Of Ceramic Engineering Yonsei University
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Kang Yong
Department Of Chemical And Biological Engineering Korea University
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Kim Jun
Department Of Bioengineering University Of California Los Angeles
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Nam Chang
Water Chemistry & Materials Analysis Group Kepri
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Kang Yong
Department Of Anatomy
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KIM Sang
Department of Anesthesiology and Pain Medicine, Chosun University Medical School
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KIM Jun
Department of Advanced Material Science and Engineering, Yonsei University
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