Boron nitride nanosheet nanofluids for enhanced thermal conductivity
Boron nitride nanosheet nanofluids for enhanced thermal conductivity
复制标题
氮化硼纳米片纳米流体增强导热性
DOI：
10.1039/c8nr00651b
复制
发表时间：
2018-07-21
期刊：
影响因子：
6.7
通讯作者：
Yu, Jinhong
中科院分区：
文献类型：
--
作者：
Hou, Xiao;Wang, Mengjie;Yu, Jinhong
传统的冷却液由于其要求的高功率和高集成度而难以满足设备要求。纳米流体是具有高热导率的纳米颗粒分散体，因此它们已被提出用于传热应用。氮化硼纳米片（BNNSs）具有高导热性和优异的绝缘性能。在这里，我们制造BNNS纳米流体，并研究它们对热导率增强的影响。我们发现，BNNSs可以有效地提高水的导热系数。BNNS纳米流体的热导率在24体积%负载下达到2.39 W mK-1。利用红外摄像机观察了纳米流体和水在加热过程中的表面温度变化。结果表明，纳米流体的传热速度比水快得多，表明所制备的BNNS纳米流体具有优异的传热性能。
It is difficult for traditional cooling liquids to meet equipment requirements due to the high power and high integration they demand. Nanofluids are nanoparticle dispersions with high thermal conductivities, thus they have been proposed for heat transfer applications. Boron nitride nanosheets ( BNNSs) possess high thermal conductivities and excellent insulation properties. Here, we fabricated BNNS nanofluids and investigated their effects on thermal conductivity enhancements. We find that BNNSs can effectively enhance the thermal conductivity of water. The thermal conductivity of the BNNS nanofluids reached 2.39 W mK-1 at 24 vol% loading. The surface temperature changes of the nanofluids and water were observed during the heating process using an infrared camera. The results show that the nanofluids transfer heat much faster than water, indicating that the fabricated BNNS nanofluids have excellent thermal transfer properties.