RT Journal Article T1 Heat transfer capability of (ethylene glycol + water)-based nanofluids containing graphene nanoplatelets: design and thermophysical profile A1 Cabaleiro Álvarez, David A1 Colla, L. A1 Barison, Simona A1 Lugo Latas, Luis A1 Fedele, L. A1 Bobbo, Sergio K1 2204 Física de Fluidos K1 2213.02 Física de la Transmisión del Calor K1 3328.16 Transferencia de Calor AB This research aims at studying the stability and thermophysical properties of nanofluids designed as dispersions of sulfonic acid-functionalized graphene nanoplatelets in an (ethylene glycol + water) mixture at (10:90)% mass ratio. Nanofluid preparation conditions were defined through a stability analysis based on zeta potential and dynamic light scattering (DLS) measurements. Thermal conductivity, dynamic viscosity, and density were experimentally measured in the temperature range from 283.15 to 343.15 K and nanoparticle mass concentrations of up to 0.50% by using a transient plate source, a rotational rheometer, and a vibrating-tube technique, respectively. Thermal conductivity enhancements reach up to 5% without a clear effect of temperature while rheological tests evidence a Newtonian behavior of the studied nanofluids. Different equations such as the Nan, Vogel-Fulcher-Tamman (VFT), or Maron-Pierce (MP) models were utilized to describe the temperature or nanoparticle concentration dependences of thermal conductivity and viscosity. Finally, different figures of merit based on the experimental values of thermophysical properties were also used to compare the heat transfer capability and pumping power between nanofluids and base fluid. PB Nanoscale Research Letters SN 19317573 YR 2017 FD 2017-01-19 LK http://hdl.handle.net/11093/3244 UL http://hdl.handle.net/11093/3244 LA eng NO Nanoscale Research Letters, 12, 53 (2017) NO Ministerio de Economía y Competitividad | Ref. ENE2014-55489-C2-2-R DS Investigo RD 09-feb-2025