RT journal article
T1 Efficient nanofluids based on Ag nanoparticles and a linear silicone-based fluid for concentrating solar power
A1 Santos Martínez, Deseada María de los
A1 Gallardo Bernal, Juan Jesús
A1 Carrillo Berdugo, Iván
A1 Alcántara Puerto, Rodrigo
A1 Navas Pineda, Francisco Javier
A2 Química Física
K1 Nanofluids
K1 Linear silicone fluid
K1 Thermal conductivity
K1 Isobaric specific heat
K1 Van der Waals forces
AB Improving the efficiency of renewable energy sources can lead to obtaining electrical energy in an environmentally-friendly way. Therefore, the development of nanofluids for use in parabolic trough collectors in concentrated solar energy (CSP-PTC) is a research line of interest. Thus, in this work, nanofluids based on Ag nanoparticles and a polydimethylsiloxane (PDMS) type fluid used in CSP-PTC technology were prepared. The use of this fluid in this technology and the preparation of nanofluids based on it has not been studied widely, and the evaluation of the use of nanofluids from this type fluid is of great interest. Thus, the physical stability and the properties of interest measured, that are density, surface tension, viscosity, isobaric specific heat and thermal conductivity, were characterized. The nanofluids prepared presented interesting thermal properties. An increase of up to 4.5 % in the isobaric specific heat and up to 24 % in thermal conductivity were observed with respect to the base fluid, without a significant increase in viscosity. Thus, an increase in the heat transfer coefficient of up to 16 % was obtained. These results are really promising for the use of the nanofluids prepared in CSP-PTC technology. Finally, the moderate increase in isobaric specific heat and the significant increase in thermal conductivity is explained by the weak Van der Waals force interaction observed between the Ag surfaces and the PDMS molecules.
PB Elsevier
SN 0167-7322
YR 2024
FD 2024-08-30
LK http://hdl.handle.net/10498/34596
UL http://hdl.handle.net/10498/34596
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 10-nov-2026