Thermal Conductivity of AlN-Ethanol Nanofluids

被引：41
|
作者：
Hu, Peng [1 ]
Shan, Wan-Liang [1 ]
Yu, Fei [2 ]
Chen, Ze-Shao [1 ]
机构：
[1] Univ Sci & Technol China, Dept Thermal Sci & Energy Engn, Hefei 230027, Anhui, Peoples R China
[2] Univ Sci & Technol China, Lab Mech & Mat Sci, Hefei 230027, Anhui, Peoples R China
来源：
INTERNATIONAL JOURNAL OF THERMOPHYSICS | 2008年 / 29卷 / 06期
关键词：
AlN; Ethanol; Nanofluid; Thermal conductivity;
D O I：
10.1007/s10765-008-0529-3
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Aluminum nitride (AlN) particles of 20 nm diameter were dispersed into ethanol by a two-step process, first magnetic striation and then ultrasonic agitation. Castor oil was added as a dispersant to improve the stability of the AlN suspension. The thermal conductivities of AlN-ethanol nanofluids were measured by a hot-disk method from 0.5 vol% to 4.0 vol% at temperatures of 273.15K and 297.15 K. Results show about 20% increase in the thermal conductivity of ethanol with the addition of 4.0 vol% at 273.15 K, and a strong temperature dependence of the thermal conductivity.
引用
收藏
页码：1968 / 1973
页数：6
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