| 强化传热管内的自然对流沸腾换热 |
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| 引用本文： | 张亚君,欧阳荣,邓先和,李志武.强化传热管内的自然对流沸腾换热[J].华南理工大学学报(自然科学版),2004,32(1):41-43,48. |
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| 作者姓名： | 张亚君 欧阳荣 邓先和 李志武 |
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| 作者单位： | 华南理工大学,传热强化与过程节能教育部重点实验室,广东,广州,510640;华南理工大学,传热强化与过程节能教育部重点实验室,广东,广州,510640;华南理工大学,传热强化与过程节能教育部重点实验室,广东,广州,510640;华南理工大学,传热强化与过程节能教育部重点实验室,广东,广州,510640 |
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| 基金项目： | 教育部重点项目 (0 0 10 3 ) |
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| 摘 要： | 对普通缩放管、改型缩放管和光滑管进行了自然对流沸腾换热的实验研究，得到了这三种传热管的沸腾换热系数与热流密度的关系、实验结果表明，普通缩放管和改型缩放管的自然对流沸腾换热系数分别是光滑管的1．06倍和1．25倍，改型缩放管的自然对流沸腾换热系数比普通缩放管提高18％，并分析了改型缩放管比普通缩放管沸腾换热性能好的原因。该改型缩放管特别适用于自然对流沸腾换热的场合。
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| 关 键 词： | 缩放管 改型缩放管 沸腾 换热 |
| 文章编号： | 1000-565X(2004)01-0041-03 |
Natural Convection Boiling Heat Transfer in Enhanced Heat Transfer Tubes |
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| Zhang Ya-junOuyang RongDeng Xian-heLi Zhi-wu.Natural Convection Boiling Heat Transfer in Enhanced Heat Transfer Tubes[J].Journal of South China University of Technology(Natural Science Edition),2004,32(1):41-43,48. |
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| Authors: | Zhang Ya-junOuyang RongDeng Xian-heLi Zhi-wu |
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| Abstract: | A series of experiments had been carried out to explore the n at ural convection boiling heat transfer performance of common convergent-divergen t tube, developed convergent-divergent tube as well as smooth tube. The variati on of boiling heat transfer coefficient with heat flux density had been shown. T he experimental results reveal that, compared with a smooth tube, boiling heat t ransfer coefficients of convergent-divergent tube and developed convergent-div ergent tube are respectively improved by 6% and 25%, while this coefficient of t he deve- loped one is 18% higher than that of the common one. These results have been analyzed briefly. The developed convergent-divergent tube can be part icularly applied to the field of natural convection boiling heat transfer. |
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| Keywords: | convergent-divergent tube developed convergent-diver gent tube boiling heat transfer |
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