期刊
JOURNAL OF MOLECULAR LIQUIDS
卷 232, 期 -, 页码 105-112出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molliq.2017.02.037
关键词
Nanofluid; Thermal conductivity; New correlation; Water; Ethylene glycol; Silica
In this study, thermal conductivity of Silica and Water-Ethylene glycol as the base nanofluid, was measured within the temperature range of 25-50 degrees C for samples with volume fractions of 0.1, 0.5, 1, 1.5, 2, 3, and 5%. According to our measurements, thermal conductivity increased with increasing temperature and volume fraction. In comparison, volume fraction showed a greater incremental effect on thermal conductivity. Measurements showed that the highest thermal conductivity (45.5%) occurred in the volume fraction of 5% at 50 degrees C. Due to the lack of a precise and appropriate equation for the prediction of thermal conductivity of Silica/Water-Ethylene glycol nanofluid, an equation was provided based on the measurement results, which was a function of volume fraction and temperature. Investigations showed that maximum value for the margin of deviation for the proposed equation was equal to 22%, which is acceptable for an experimental equation. (C) 2017 Elsevier B.V. All rights reserved.
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