Fig. 7From: Heat Transfer Capability of (Ethylene Glycol + Water)-Based Nanofluids Containing Graphene Nanoplatelets: Design and Thermophysical ProfileVolumetric behavior of GOnP/(EG + W) nanofluid set. a Temperature dependence of density, ρ, at different mass fractions: diamond, base fluid 0%; circle, 0.10%; triangle, 0.25%; and square, 0.50%. The dashed lines represent the fitted second-order polynomial, Eq. (6). The inset shows density enhancements of the nanofluids in relation to the base fluid, 102 (ρ nf − ρ bf)/ρ bf, at 303.15 K (white bars) and 343.15 K (gray bars) for the different concentrations. b Isobaric thermal expansivity, α p , vs. nanoparticle mass fraction, wt.%, at different temperatures: square, 303.15 K; triangle, 313.15 K; diamond, 323.15 K; and circle, 333.15 KBack to article page