| 微通道内超临界二氧化碳的压降与传热特性 |
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| 引用本文： | 淮秀兰,SHIGERU Koyama.微通道内超临界二氧化碳的压降与传热特性[J].工程热物理学报,2004,25(5):843-845. |
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| 作者姓名： | 淮秀兰 SHIGERU Koyama |
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| 作者单位： | 1. 中国科学院工程热物理研究所,北京,100080
2. Institute for Materials Chemistry and Engineering, Kyushu University, Fukuoka 816-8580,Japan |
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| 基金项目： | 国家重点基础研究发展规划项目资助(No.G2000026306)，国家自然科学基金项目资助(No.50376063) |
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| 摘 要： | 进行了微通道内超临界CO2的局部和平均传热与压降特性实验研究。结果表明,临界点附近物性参数的剧烈变 化使压降增大,但传热被大大强化。同时也发现,系统压力、质量流速及CO2温度对流动与传热特性有重要影响。在大 量实验数据的基础上,得出了冷却条件下水平微通道内超临界CO2强制对流换热关联式。
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| 关 键 词： | 超临界CO2 传热 压降 微通道 |
| 文章编号： | 0253-231X(2004)05-0843-03 |
| 修稿时间： | 2004年1月13日 |
HEAT TRANSFER AND PRESSURE DROP OF SUPERCRITICAL CARBON DIOXIDE IN MULTI-PORT CHANNELS |
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| HUAI Xiu-Lan Shigeru Koyama.HEAT TRANSFER AND PRESSURE DROP OF SUPERCRITICAL CARBON DIOXIDE IN MULTI-PORT CHANNELS[J].Journal of Engineering Thermophysics,2004,25(5):843-845. |
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| Authors: | HUAI Xiu-Lan Shigeru Koyama |
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| Abstract: | This paper reports an experimental study of the local and average heat transfer and the pressure drop of supercritical CO2 in multi-port channels. The results indicate that high rates of heat transfer coefficient are achieved in the near-critical region, and that the system pressure, the mass velocity and the temperature of CO2 all have important effects on the heat transfer characteristics. Based on large amounts of experimental data, a new empirical correlation was developed for forced convection of supercritical CO2 in horizontal mini/micro channels in cooling case. |
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| Keywords: | supercritical carbon dioxide heat transfer pressure drop mini/micro channels |
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