Akilu, S. and Baheta, A.T. and M.Said, M.A. and Minea, A.A. and Sharma, K.V. (2018) Properties of glycerol and ethylene glycol mixture based SiO2-CuO/C hybrid nanofluid for enhanced solar energy transport. Solar Energy Materials and Solar Cells, 179. pp. 118-128.
Full text not available from this repository.Abstract
Hybrid nanofluids are a novel class of colloidal fluids which have drawn significant attention due to potential tailoring of their thermo-physical properties for heat transfer enhancement by a combination of more than one nano-additive to meet specific requirements of an application. In the present work, ceramic copper oxide/carbon (SiO2-CuO/C) nanoparticles in 80:20 (wt) composition were prepared by ultrasonic-assisted wet mixing technique. The hybrid nanofluid was formulated by dispersing the nanoparticles into a base fluid mixture of 60:40 ( by mass) glycerol and ethylene glycol (G/EG) using the two-steps method. The influence of nanoparticles on the augmentation of specific heat, thermal conductivity and viscosity was examined in the volume concentration range of 0.5�2.0 in the temperature range of 303.15�353.15 K. The results demonstrate that the synthesized SiO2-CuO/C hybrid nanoparticles enhanced the thermo-physical properties of the base fluid mixture which is higher than using SiO2 alone. In the case of SiO2�G/EG nanofluid, the specific heat capacity decremented by a maximum value of 5.7 whereas the thermal conductivity and viscosity incremented by 6.9 and 1.33-times as compared with G/EG at maximum volume concentration of 2.0 at a temperature of 353.15 K. Comparatively, a reinforcement of 80 SiO2 with 20 CuO/C in G/EG mixture led to thermal conductivity and viscosity enhancement by 26.9 and 1.15-times, respectively with a significant reduction of specific heat by 21.1. New empirical correlations were proposed based on the experimental data for evaluation of thermophysical properties. © 2017 Elsevier B.V.
Item Type: | Article |
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Impact Factor: | cited By 1 |
Uncontrolled Keywords: | Copper compounds; Copper oxides; Ethylene; Ethylene glycol; Glycerol; Heat transfer; Mixtures; Nanoparticles; Physical properties; Polyols; Silica; Silicon compounds; Solar collectors; Solar energy; Specific heat; Synthesis (chemical); Thermal conductivity; Thermodynamic properties; Ultrasonic applications; Viscosity, Empirical correlations; Heat Transfer enhancement; Hybrid nanofluid; Hybrid nanoparticle; Mixing techniques; Temperature range; Thermo-physical property; Volume concentration, Nanofluidics |
Departments / MOR / COE: | Research Institutes > Institute for Health Analytics |
Depositing User: | Mr Ahmad Suhairi Mohamed Lazim |
Date Deposited: | 01 Aug 2018 03:12 |
Last Modified: | 23 Oct 2018 01:47 |
URI: | http://scholars.utp.edu.my/id/eprint/21551 |