Abstract
An experimental study on the effects of temperature and volume fraction of double-walled carbon nanotubes (DWCNTs) on the thermal conductivity of ethylene glycol (EG) was performed. In this way, the thermal conductivity of samples of nanofluid was examined at temperature ranging from 27 to 52 °C and concentrations range of 0.02, 0.05, 0.075, 0.1, 0.25, and 0.6 %. The results showed that the thermal conductivity of nanofluids enhances strangely with increase in volume fraction and temperature. Moreover, attempts were made to provide a new correlation for predicting the thermal conductivity of functionalized DWCNTs/EG nanofluid at different temperatures and concentrations. Finally, a deviation of margin analysis of the correlation revealed that there is a good agreement between experimental data and correlation outputs.
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