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Enhancement of Electrical Conductivity of Water Based Silicon Oxide Nanofluids

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In this paper, the electrical conductivity of SiO2 nanofluids using pure water (H2O) as the base fluid is investigated. The two-step method was used to prepare the SiO2–H2O nanofluids. The variations in electrical conductivity of SiO2–H2O nanofluids as function of mass concentration of 0.1–1.0% and temperature of 25.2–64.3 are present. Experimental results show that the correlation of electrical conductivity of SiO2–H2O nanofluids and mass concentration, temperature is nearly linear. However, the effect of temperature on electrical conductivity is much less than that of mass concentration. In order to evaluate the enhancement performance of SiO2–H2O nanofluids, the relative electrical conductivity is introduced and studied explicitly. The relative electrical conductivity means the ratio between the electrical conductivity of SiO2–H2O nanofluids to pure water. It is found that the relative electrical conductivity increases with the increase of mass fraction and decreases with the increase of temperature. Finally, an empirical correlation is built to predict the electrical conductivity with varied combination of mass fraction and temperature.
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Keywords: ELECTRICAL CONDUCTIVITY; EMPIRICAL CORRELATION; ENVIRONMENT TEMPERATURE; MASS CONCENTRATION; SIO2–H2O NANOFLUIDS

Document Type: Short Communication

Publication date: August 1, 2016

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  • Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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