RT journal article
T1 Optical and transport properties of metal-oil nanofluids for thermal solar industry: experimental characterisation, performance assessment and molecular dynamics insights
A1 Carrillo Berdugo, Iván
A1 Estellé, Patrice
A1 Sani, Elisa
A1 Mercatelli, Luca
A1 Grau Crespo, Ricardo
A1 Zorrilla Cuenca, David
A1 Navas Pineda, Francisco Javier
A2 Química Física
K1 nanofluids
K1 concentrated solar power
K1 thermal performance
K1 molecular dynamics
K1 sunlight extinction
AB Concentrating solar power (CSP) technology can become a very valuable contributor to the transformation and decarbonization of our energy landscape, but for this technology to overcome the barrier toward market deployment, significant enhancements in the solar-to-thermal-to-electric energy conversión efficiency are needed. Here, an in-depth experimental analysis of the optical and transport properties of Pd-containing aromatic oil-based nanofluids is presented, with promising results for their prospective use as volumetric absorbers and heat transfer fluids in next-generation parabolic-trough CSP plants. A 0.030 wt % concentration of Pd nanoplates increases sunlight extinction by 90% after 20 mm propagation length and thermal conductivity by 23.5% at 373 K, which is enough to increase the overall system efficiency up to 45.3% and to reduce pumping requirements by 20%, with minimum increases in the collector length. In addition to that, molecular dynamics simulations are used to gain atomistic-level insights about the heat and momentum transfer in these nanofluids, with a focus on the role played by the solid−liquid interface in these phenomena. Molecules chemisorbed at the interface behave as a shelter-like boundary that hinders heat conduction, as a high thermal resistance path, and minimizes the impact of the solid on dynamic viscosity, as it weakens the interactions between the nanoplate and the surrounding nonadsorbed fluid molecules.
PB AMER CHEMICAL SOC
SN 2168-0485
YR 2021
FD 2021
LK http://hdl.handle.net/10498/30305
UL http://hdl.handle.net/10498/30305
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 11-nov-2026