| 脉动热管流型的电容层析成像识别及热管换热特性 |
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| 引用本文： | 李惊涛,李志宏,韩振兴,刘石.脉动热管流型的电容层析成像识别及热管换热特性[J].动力工程,2009,29(1). |
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| 作者姓名： | 李惊涛 李志宏 韩振兴 刘石 |
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| 作者单位： | 华北电力大学,电站设备状态监测与控制教育部重点实验室,北京,102206
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| 基金项目： | 国家自然科学基金，国家自然科学基金 |
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| 摘 要： | 结合高速摄像和电容层析成像技术,对脉动热管进行了可视化测量研究.从流型和流向两方面分析了脉动热管的运行机理和传热特性.根据受力分析对脉动热管的结构进行了改进.结果表明:脉动热管存在3种不同流型,即塞状流、环状流以及两者共存的混合流,其对应的影响因素、运行特性与传热强度也不同;从流动方向来看,脉动热管内工质的流动可分为脉动流和循环流;对脉动热管的改进说明改变脉动热管流道的对称性和均衡性有利于循环流的形成和维持.
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| 关 键 词： | 脉动热管 电容层析成像 流型 流向 换热 |
Flow Pattern Recognition Using Electrical Capacitance Tomography and Heat Transfer Characteristics of Pulsating Heat Pipes |
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| LI Jing-tao,LI Zhi-hong,HAN Zhen-xing,LIU Shi.Flow Pattern Recognition Using Electrical Capacitance Tomography and Heat Transfer Characteristics of Pulsating Heat Pipes[J].Power Engineering,2009,29(1). |
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| Authors: | LI Jing-tao LI Zhi-hong HAN Zhen-xing LIU Shi |
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| Affiliation: | MOE's Key Lab of Condition Monitoring and Control of Power Plant Equipment;North China Electric Power University;Beijing 102206;China |
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| Abstract: | Visualization measurement and study on pulsating heat pipe(PHP) was carried out by use of the high-speed photography and electrical capacitance tomography(ECT).The operation mechanism and heat transfer characteristics of the PHP were analyzed from the view of flow pattern and flow direction.According to the analysis of the forces,the structure of the PHP was improved.Results show that there are three flow patterns,i.e.slug flow,annular flow and mixed flow of slug and annular flow,corresponding to different ... |
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| Keywords: | pulsating heat pipe electrical capacitance tomography flow pattern flow direction heat transfer |
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