磁场对热管传热性能的影响机理.pdfVIP

30 11 动 力 工 程 学 报 Vol. 30 No. 11 2010 11 Journal of Chinese Society of Pow er Engineering Nov. 2010 : 16 4 60 (2010) :TK 124 :A :4 0. 10 1, 2 1, 3 1 1 梁 龙 , 张云峰 , 张英才 , 爨璋瑜 ( 1. , 4 100 6; 2. , 266500; 3. , 4 100 6) : 建立了热管传热性能测试装置, 通过实 得到了不同方向不同强度磁场作用下磁流体工 质热管传热性能的变化规律, 并采用场协同原理对磁流体在磁场作用下的自然对流特性进行了分 析与研究. 结果表明: 磁流体工质热管的传热性能不仅与磁场的强度有关, 而且与磁场的方向有关; 磁场对热管蒸发段磁流体自然对流强度的影响是导致热管传热性能变化的主要原因. : 热管; 磁场; 磁流体; 自然对流; 场协同理论; 传热性能; 影响机理 Influence of Magnetic Field on Heat Transfer Performance of Heat Pipe 1, 2 1, 3 1 1 LIAN G L ong , ZH AN G Yunf eng , ZH A NG Yingcai , C UAN Zhangy u ( 1. School of Energy and Pow er Engineering, Changsha University of Science and T echnology , Changsha 4100 6, China; 2. Datang Shandong Huangdao Pow er Plant, Qingdao 266500, China; 3. Key Lab of Efficient and Clean Energy Utilization of Regular Institutions of Higher Education in Hunan Province, Changsha U niversity of Science and Technology, Changsha 4 100 6, China) Abstract : T he test device for heat transfer performance of heat pipe w as built up. T he variation law of heat transfer performance of heat pipe w ith magnetic fluid as the w orking medium w as obtained under the action of the megnetic field from different direction and w ith different intensities. Using field synergy principle, analysis and study w ere made for the natural convection characteristics of the magnetic fluid under the ac tion of the magnetic field. Results show that for the heat pipe w ith magnetic fluid as the w orking medium, the heat tranfer performance not