Study of the enhanced thermal conductivity of Fe nanofluids

被引：458

作者：

Hong, TK ^{[1
]}

Yang, HS ^{[1
]}

Choi, CJ ^{[1
]}

机构：

[1] Korea Inst Machinery & Mat, Chang Won 641010, Kyungnam, South Korea

来源：

JOURNAL OF APPLIED PHYSICS | 2005年 / 97卷 / 06期

基金：

新加坡国家研究基金会;

关键词：

D O I：

10.1063/1.1861145

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Nanofluids, a mixture of nanoparticles and fluid, have enormous potential to improve the efficiency of heat transfer fluids. Fe nanofluids are prepared with ethylene glycol and Fe nanocrystalline powder synthesized by a chemical vapor condensation process. Sonication with high-powered pulses is used to improve the dispersion of nanoparticles in the preparation of nanofluids. Nanofluids exhibit an enhancement of thermal conductivity after sonication. Thermal conductivity of a Fe nanofluid is increased nonlinearly up to 18% as the volume fraction of particles is increased up to 0.55 vol. %. Comparing Fe nanofluids with Cu nanofluids, we find that the suspension of highly thermally conductive materials is not always effective to improve thermal transport property of nanofluids. (C) 2005 American Institute of Physics.

引用

页数：4

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