Abstract
It is shown that a “nanofluid” consisting of copper nanometer-sized particles dispersed in ethylene glycol has a much higher effective thermal conductivity than either pure ethylene glycol or ethylene glycol containing the same volume fraction of dispersed oxide nanoparticles. The effective thermal conductivity of ethylene glycol is shown to be increased by up to 40% for a nanofluid consisting of ethylene glycol containing approximately 0.3 vol % Cu nanoparticles of mean diameter <10 nm. The results are anomalous based on previous theoretical calculations that had predicted a strong effect of particle shape on effective nanofluid thermal conductivity, but no effect of either particle size or particle thermal conductivity.
Keywords
NanofluidEthylene glycolThermal conductivityNanoparticleMaterials scienceVolume fractionCopperParticle (ecology)Particle sizeChemical engineeringEthylene oxideComposite materialNanotechnologyMetallurgyPolymerCopolymer
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Publication Info
- Year
- 2001
- Type
- article
- Volume
- 78
- Issue
- 6
- Pages
- 718-720
- Citations
- 3894
- Access
- Closed
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Cite This
J. A. Eastman,
Soo-Chang Choi,
Shuai Li
et al.
(2001).
Anomalously increased effective thermal conductivities of ethylene glycol-based nanofluids containing copper nanoparticles.
Applied Physics Letters
, 78
(6)
, 718-720.
https://doi.org/10.1063/1.1341218
Identifiers
- DOI
- 10.1063/1.1341218