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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
Propylene glycol, Pharmaceutical Secondary Standard; Certified Reference Material
Sigma-Aldrich
Copper(II) oxide, nanopowder, <50 nm particle size (TEM)
Continuous cast copper (O), BCR®, certified reference material, rod
Sigma-Aldrich
Copper, foil, ≥99.8% (complexometric)
Sigma-Aldrich
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(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, powder, <75 μm, 99%
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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
USP
Propylene glycol, United States Pharmacopeia (USP) Reference Standard
Copper - O.F.H.C., sheet, 100x100mm, thickness 4.76mm, 99.95+%
Copper - O.F.H.C., rod, 200mm, diameter 50.0mm, as drawn, 99.95+%
Copper - O.F.H.C., foil, light tested, 25x25mm, thickness 0.075mm, half hard, 99.95+%
Copper - O.F.H.C., tube, 200mm, outside diameter 1.23mm, inside diameter 0.51mm, wall thickness 0.36mm, 99.95+%
Copper - O.F.H.C., tube, 100mm, outside diameter 3.2mm, inside diameter 2.4mm, wall thickness 0.4mm, 99.95+%
Copper - O.F.H.C., foil, 6mm disks, thickness 0.7mm, half hard, 99.95+%
Copper - O.F.H.C., sheet, 50x50mm, thickness 4.76mm, 99.95+%
Copper - O.F.H.C., tube, 500mm, outside diameter 0.635mm, inside diameter 0.275mm, wall thickness 0.18mm, 99.95+%
Copper - O.F.H.C., wire reel, 10m, diameter 0.125mm, annealed, 99.95+%