Experimental study towards improving the thermal conductivity of CuO/nanoparticles by adding GO/nanoparticles

The current paper conducted an experimental study to determine the impact of adding and synthesising graphene oxide (GO) with copper oxide (CuO) nanoparticles on thermal conductivity improvement. The thermal conductivity of a unique GO-CuO/water hybrid nanofluid has been investigated at various volume concentrations (0.15–0.75 %) of 20 % GO and 80 % CuO nanoparticles at several ranges of temperatures from (25–50 °C). KD2-Pro device was used to measure the thermal conductivity due to its most straightforward and accurate method. The XRD analysis was adopted to plot the sharp peak of the material's crystalline and estimate the nanoparticle size. The result proved that the incorporation of GO nanoparticles improved the thermal conductivity (TC) of the CuO/water nanofluid. The results showed that increasing both the volume concentration and the temperature led to a clear thermal conductivity enhancement (TCE). Therefore, the most significant improvement in thermal conductivity is 8.8 % at a volume concentration of 0.75 % and temperature of 50 °C. A new correlation with high precision has been proposed regarding the current data. Therefore, the highest deviation margin between the created relationships outputs and the experiment results was 0.06 %.

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