| Cooling Augmentation with Microchanneled Structures |
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| 作者姓名： | X.F. Peng B.X. Wang Thermal Engineering |
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| 作者单位： | X.F. Peng B.X. Wang Thermal Engineering Department，Tsinghua University，Beijing 100084，China |
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| 基金项目： | This project is finmanced by the National Natural Science Foundation of China. |
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| 摘 要： | Experiments were conducted to investigate the heat transfer characteristics and cooling performance of subcooled liquid, water, flowing through rectangular cross-section microchanneled structures machined on a stainless steel plate. Heat transfer or flow mode transition was observed when the heating rate or wall temperature was increased. This transition was found to be suggestively induced by the variation in liquid thermophysical properties due to the significant rise of liquid temperature in the microstructures. The influence of such parameters as liquid velocity, subcooling, property variation, and microchannel geometric configuration on the heat transfer behavior, cooling performance and the heat transfer and liquid flow mode transition were also investigated. The experiments indicated that both slngle-phase forced convection and flow boiling characteristics were quite different from those in normal-sized tubes and the heat transfer was obviously intensified.
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| 关 键 词： | 热交换器 对流 沸腾流 微型管结构 |
Cooling augmentation with microchanneled structures |
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| X.F. Peng B.X. Wang Thermal Engineering.Cooling Augmentation with Microchanneled Structures[J].Journal of Thermal Science,1993,2(2):98-110. |
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| Authors: | X F Peng B X Wang |
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| Affiliation: | [1]ThermalEngineeringDepartment,TsinghuaUniversity,Beijing100084,China [2]ThermalEngineeringDepartment,Tsin |
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| Abstract: | Experiments were conducted to investigate the heat transfer characteristics and cooling performance of subcooled liquid, water, flowing through rectangular cross-section microchanneled structures machined on a stainless steel plate. Heat transfer or flow mode transition was observed when the heating rate or wall temperature was increased. This transition was found to be suggestively induced by the variation in liquid thermophysical properties due to the significant rise of liquid temperature in the microstructures. The influence of such parameters as liquid velocity, subcooling, property variation, and microchannel geometric configuration on the heat transfer behavior, cooling performance and the heat transfer and liquid flow mode transition were also investigated. The experiments indicated that both slngle-phase forced convection and flow boiling characteristics were quite different from those in normal-sized tubes and the heat transfer was obviously intensified. |
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| Keywords: | heat transfer convection flow boiling microchanneled structure cooling |
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