What question did this study set out to answer?

To determine the impact of dispersing copper nanoparticles on the effective thermal conductivity of ethylene glycol-based nanofluids.

February 5, 2001Applied Physics Letters

Anomalously increased effective thermal conductivities of ethylene glycol-based nanofluids containing copper nanoparticles

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Authors

JEJ. A. EastmanArgonne National Laboratory SCSoo-Chang ChoiKorea Institute of Machinery and Materials SLShuai LiChina National Offshore Oil Corporation (China)

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Implication

Experimental study demonstrates up to a 40% increase in thermal conductivity in ethylene glycol with 0.3 vol % copper nanoparticles, suggesting classical heat transfer models are incomplete.

Key Points

To determine the impact of dispersing copper nanoparticles on the effective thermal conductivity of ethylene glycol-based nanofluids.
Synthesized and dispersed copper nanoparticles with a mean diameter of <10 nm into ethylene glycol at a volume concentration of approximately 0.3 vol %.
Measured effective thermal conductivity and compared results against pure ethylene glycol, equal concentrations of oxide nanoparticles, and theoretical calculations.
Dispersing approximately 0.3 vol % copper nanoparticles increased the effective thermal conductivity of ethylene glycol by up to 40%.
Thermal conductivity enhancement was substantially greater than that achieved with identical volume fractions of oxide nanoparticles.
Observed enhancements contradicted theoretical models that predicted no dependence of effective thermal conductivity on nanoparticle size or thermal conductivity.

Cite This Study

Eastman et al. (2001) studied this question.

synapsesocial.com/papers/69d89c86183921ebcaae2e73 https://doi.org/10.1063/1.1341218

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Implication

Experimental study demonstrates up to a 40% increase in thermal conductivity in ethylene glycol with 0.3 vol % copper nanoparticles, suggesting classical heat transfer models are incomplete.

Anomalously increased effective thermal conductivities of ethylene glycol-based nanofluids containing copper nanoparticles

Discussion

Member takes

Implication

Key Points

Cite This Study

Anomalously increased effective thermal conductivities of ethylene glycol-based nanofluids containing copper nanoparticles

Discussion

Member takes

Implication

Key Points

Cite This Study

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