| 微胶囊相变悬浮液传热特性的实验研究 |
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| 引用本文： | 王利,赵兵全,赵镇南.微胶囊相变悬浮液传热特性的实验研究[J].煤气与热力,2006,26(12):66-70. |
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| 作者姓名： | 王利 赵兵全 赵镇南 |
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| 作者单位： | 天津大学,机械工程学院,天津,300072;天津大学,机械工程学院,天津,300072;天津大学,机械工程学院,天津,300072 |
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| 摘 要： | 介绍了微胶囊相变悬浮液的研究进展。建立了微胶囊相变悬浮液层流传热特性的实验系统,对其在定热流密度加热条件下的管内层流强迫对流传热特性进行了测试和分析。影响传热强化的主要因素为雷诺数及微胶囊的体积分数,斯蒂芬数的影响很小,可以忽略不计。微胶囊相变悬浮液的管内层流强迫对流传热的修正努塞尔数是水的2.5~3.0倍,修正努塞尔数随着雷诺数及微胶囊体积分数的增加而增大。
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| 关 键 词： | 相变 微胶囊相变悬浮液 传热强化 |
| 文章编号： | 1000-4416（2006）12-0066-05 |
| 收稿时间： | 2005-12-12 |
| 修稿时间： | 2005-12-122006-01-26 |
Experimental Research on Heat Transfer Characteristics in Microencapsulated Phase Change Material Suspensions |
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| WANG Li,ZHAO Bing-quan,ZHAO Zhen-nan.Experimental Research on Heat Transfer Characteristics in Microencapsulated Phase Change Material Suspensions[J].Gas & Heat,2006,26(12):66-70. |
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| Authors: | WANG Li ZHAO Bing-quan ZHAO Zhen-nan |
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| Affiliation: | School of Mechanical Engineering, Tianjin University, Tianjin 300072, China |
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| Abstract: | The research progress of microencapsulated phase change material suspensions is introduced.The experimental system of laminar heat transfer characteristics in microencapsulated phase change material suspensions is established.The laminar forced convection heat transfer of the suspensions in a circular tube under heating condition with constant heat flux density is tested and analyzed.The key factors affecting the heat transfer enhancement are Reynolds number and volumetric fraction of micro-capsule,and the influence of Stefan number is negligible.The correct Nusselt number for the laminar heat transfer of the suspensions in a circular tube is higher than that for water by a factor of 2.5 to 3.0,and the correct Nusselt number increases with increasing Reynolds number and volumetric fraction of micro-capsule. |
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| Keywords: | phase change microencapsulated phase change material suspension heat transfer enhancement |
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