Abstract
The nanofluid as a pivotal role in heat transfer system has attracted more and more attention. Herein, the stearic acid-modified CuS (SA-CuS) nanoparticles with a uniform diameter of 60 nm were synthesized successfully by a facile two-phase approach. Accordingly, the CuS-oil nanofluids, with SA-CuS concentrations ranging from 0.01 to 0.04 vol%, were prepared by a one-step method in the heat transfer oil. These CuS-oil nanofluids exhibit good stability and considerable enhanced thermal conductivity. The improvement is even up to 20.5% with a volume fraction of 0.04 vol% at 30 °C. Furthermore, the effect of volume fraction and temperature on the viscosity of the nanofluids was also systematically investigated.
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Acknowledgements
This study was funded by Natural Science Foundations of China (grant number 21576056), Natural Science Foundations of Guangdong Province (grant numbers 2014A030313520 and 2015A030313503), Science and Technology Research Project of Guangdong Province (grant number 2016A010103043), and Science and Technology Research Project of Guangzhou (grant numbers 201607010232, 201607010198, and 201607010263).
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Qin, JH., Liu, ZQ., Li, N. et al. A facile way to prepare CuS-oil nanofluids with enhanced thermal conductivity and appropriate viscosity. J Nanopart Res 19, 40 (2017). https://doi.org/10.1007/s11051-017-3743-8
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DOI: https://doi.org/10.1007/s11051-017-3743-8