Rheology of Solar-Salt based nanofluids for concentrated solar power. Influence of the salt purity, nanoparticle concentration, temperature and rheometer geometry
Impact
Scholar |
Other documents of the author: Muñoz Sánchez, Belén; Nieto Maestre, Javier; Veca, Elisabetta; Liberatore, Raffaele; Sau, Salvatore; Navarro, Helena; Ding, Yulong; Navarrete Argilés, Nuria; Juliá Bolívar, José Enrique; Fernández, Ángel G.; García Romero, Ana
Metadata
Show full item recordcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7035
comunitat-uji-handle3:10234/8617
comunitat-uji-handle4:
INVESTIGACIONThis resource is restricted
https://doi.org/10.1016/j.solmat.2017.10.022 |
Metadata
Title
Rheology of Solar-Salt based nanofluids for concentrated solar power. Influence of the salt purity, nanoparticle concentration, temperature and rheometer geometryAuthor (s)
Date
2018Publisher
ElsevierISSN
0927-0248; 1879-3398Bibliographic citation
MUÑOZ-SÁNCHEZ, Belén, et al. Rheology of Solar-Salt based nanofluids for concentrated solar power. Influence of the salt purity, nanoparticle concentration, temperature and rheometer geometry. Solar Energy Materials and Solar Cells, 2018, vol. 176, p. 357-373Type
info:eu-repo/semantics/articlePublisher version
https://www.sciencedirect.com/science/article/pii/S0927024817305925Version
info:eu-repo/semantics/publishedVersionSubject
Abstract
Solar Salt-based nanofluids have attracted significant scientific interest in recent years due to their improved thermal properties, making them strong candidates as thermal energy storage materials and/or heat transfer ... [+]
Solar Salt-based nanofluids have attracted significant scientific interest in recent years due to their improved thermal properties, making them strong candidates as thermal energy storage materials and/or heat transfer fluids in CSP plants. There have been reports on increased specific heat due to the addition of nanoparticles, however, there is a lack of comprehensive information on other essential properties affecting the heat transfer, such as the viscosity. This article concerns the rheological behaviour of nanofluids made of Solar Salt (mass percentage at 60% NaNO3 – 40% KNO3) as the base fluid and silica or alumina nanoparticles as additives. The evolution of these nanofluids viscosity as a function of the shear rate (1–1000 s−1) at a temperature range of 250–400 °C was measured and analysed. The impact of the salt purity (refined or industrial grade), the nanoparticle concentration (0.5–1.5 wt%) and the rheometer measuring configuration (coaxial cylinder or parallel plate) are examined. The results showed in general a Newtonian behaviour of the nanofluids with independency of the rheometer configuration. The relationship between the viscosity and the temperature follows an Arrhenius model. The influence of the nanoparticle concentration on the viscosity of the refined grade Solar Salt is analysed according to the Maron-Pierce and Kriegher-Dougherty models for the nanofluids containing alumina and silica nanoparticles respectively, due to their different shape. [-]
Is part of
Solar Energy Materials and Solar Cells, 2018, vol. 176, p. 357-373Investigation project
The authors wish to acknowledge the University of the Basque Country (UPV/EHU) for supporting the PhD of Belén Muñoz-Sánchez and her research stay at the Universidad de Antofagasta, the NanoUptake COST project for supporting the STSM of Belén Muñoz- Sánchez and Nuria Navarrete at the University of Birmingham. This work was supported by the European Union Seventh Framework Programme FP7/2007-2013 [grant agreement no. 609837, STAGE-STE project]; European Union Framework Programme Horizon 2020 [COST Action CA15119, Nanouptake – Overcoming Barriers to Nano fl uids Market Uptake]Rights
© 2017 Elsevier B.V. All rights reserved
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/restrictedAccess
http://rightsstatements.org/vocab/InC/1.0/
info:eu-repo/semantics/restrictedAccess
This item appears in the folowing collection(s)
- EMC_Articles [832]