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Influence of nanoparticle concentration on thermo-physical properties of CuO-propylene glycol nanofluids.

Influence of nanoparticle concentration on thermo-physical properties of CuO-propylene glycol nanofluids.

Journal of nanoscience and nanotechnology (2014-04-18)

Kuppusamy Swaminathan Suganthi, Anju K Radhakrishnan, Natarajan Anusha, Kalpoondi Sekar Rajan

ABSTRACT

Experiments were performed on the preparation and characterization of CuO-propylene glycol nanofluids. The influence of nanoparticle concentration and temperature on nanofluid viscosity reveals existence of a range of nanoparticle concentration and temperature in which the viscosity of nanofluid is lower than that of propylene glycol, possibly due to interactions between nanoparticles and propylene glycol. A temperature-independent, thermal conductivity enhancement of 38% was obtained for nanoparticle concentration of 1.5 vol% over a temperature range of 10-60 degrees C. We believe that particle clustering contributes to the thermal conductivity enhancement in CuO-propylene glycol nanofluids.

MATERIALS

Product Number

Brand

Product Description

Supelco

Copper (impurities), manufactured by MBH Analytical Ltd (39X 17868)

Supelco

Propylene glycol, Pharmaceutical Secondary Standard; Certified Reference Material

Sigma-Aldrich

Copper(II) oxide, nanopowder, <50 nm particle size (TEM)

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Copper, electrolytic, Analytical Reagent, reag. Ph. Eur., ≥99.9% (complexometric), wire

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Copper, foil, ≥99.8% (complexometric)

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Copper, beads, 2-8 mm, ≥99.99% trace metals basis

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Copper, foil, thickness 0.025 mm, 99.98% trace metals basis

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Copper, wire, diam. 1.0 mm, ≥99.9%

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Copper, foil, thickness 0.5 mm, 99.98% trace metals basis

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Copper, wire, diam. 2.0 mm, 99.999% trace metals basis

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Copper, wire, diam. 0.64 mm, 99.995% trace metals basis

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Copper(II) oxide, powder, 99.995% trace metals basis

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Copper, beads, 2-8 mm, 99.9995% trace metals basis

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Copper, foil, thickness 1.0 mm, 99.999% trace metals basis

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Propylene glycol, ≥99.5% (GC), FCC, FG

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Copper, rod, diam. 11 mm, 99.9999% trace metals basis

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Copper(II) oxide, powder, 99.99% trace metals basis

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Copper, wire, diam. 0.25 mm, 99.999% trace metals basis

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Copper(II) oxide, 99.999% trace metals basis

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Copper, turnings, purum p.a., ≥99.0%

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Propylene Glycol, meets USP testing specifications

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(R)-(−)-1,2-Propanediol, 96%

Copper, rod, 50mm, diameter 6.35mm, as drawn, 99.999%

Propylene glycol, European Pharmacopoeia (EP) Reference Standard

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Copper(II) oxide, needles, mixture of CuO and Cu₂O, ACS reagent

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Copper(II) oxide, powder, <10 μm, 98%

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Copper(II) oxide, ACS reagent, ≥99.0%

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Copper(II) oxide on alumina, 14-30 mesh, extent of labeling: 13 wt. % loading

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