| 磁性液体强化扬声器音圈散热的实验研究 |
| |
| 引用本文： | 陈善飞,郑敏华,王正良. 磁性液体强化扬声器音圈散热的实验研究[J]. 电子器件, 2011, 34(4): 398-401 |
| |
| 作者姓名： | 陈善飞 郑敏华 王正良 |
| |
| 作者单位： | 浙江万里学院研究物理研究所; |
| |
| 基金项目： | 宁波市自然科学基金(2008A61004,2010A610127); 宁波市科技项目(2009B20059) |
| |
| 摘 要： | 实验将封有聚α-烯烃合成油基磁性液体的两玻璃管放置于磁场中,研制了磁性液体在均匀磁场中瞬态双热线导热 系数的实验测量装置,测试发现磁性液体的导热系数在均匀磁场中随磁场强度的增大而显著增大.研制了恒压法在线实时 检测扬声器音圈温升的测量装置,评价了在同一工况下空气和磁性液体对扬声器音圈温升的影响,测量发现磁性液体能显著 ...
|
| 关 键 词： | 磁性液体 导热系数 音圈 强化散热 |
Investigation on enhancing heat dissipation of loudspeaker voice coil by Ferrofluids |
| |
| CHEN Shanfei,ZHENG Minghua,WANG Zhengliang. Investigation on enhancing heat dissipation of loudspeaker voice coil by Ferrofluids[J]. Journal of Electron Devices, 2011, 34(4): 398-401 |
| |
| Authors: | CHEN Shanfei ZHENG Minghua WANG Zhengliang |
| |
| Affiliation: | CHEN Shanfei~*,ZHENG Minghua,WANG Zhengliang (Institute of Applied Physics Zhejiang Wanli University,Ningbo Zhejiang 315101,China) |
| |
| Abstract: | The polymericα-olefin based ferrofluids sealed in two glass tubes were placed in external magnetic field, the transient hot-wire(THW) instrument was developed for accurate measurements of the thermal conductivity of magnetic fluids in uniform magnetic field,the test found that the thermal conductivity of ferrofluids in the uniform magnetic field increases with the magnetic field strength.The real-time and on-line temperature measuring system based on constant pressure method was developed to evaluate the temperature-rise effect of gas and ferrofluids on loudspeaker voice coil in the same condition,ferrofluids can significantly reduce the temperature rise of loudspeaker voice coil.Therefore,the poly-α-olefin based ferrofluid cools off the loudspeaker voice coil better than gas. |
| |
| Keywords: | ferrofluids thermal conductivity voice coil enhanced heat dissipation |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《电子器件》浏览原始摘要信息 |
|
点击此处可从《电子器件》下载免费的PDF全文 |
|
