Abstract
Thermal energy storage plays a significant role in the recent renewable energy systems for matching supply and demand profile. The present work examines the suitability of nano-doped candle making wax (CMW) for improving thermal storage capability of the aforementioned systems. The nano-CMW was synthesized by diffusing four incremental volume fractions of nano-CuO particles in CMW. Then, the characterization was accompanied with Field Emission Scanning Electron Microscope (FESEM), Differential Scanning calorimetry (DSC) and Thermogravimetric Analysis (TGA) and Thermal conductivity analyzer. The results proved that the nanoparticles significantly helped to enhance the thermal properties of the CMW. The nano-CuO particles were perfectly attached with CMW matrix; suppressed the supercooling and enriched the thermal conductivity upto 42.4%. However, the results were not satisfactory when adding nanoparticles above 1.0 vol fraction due to the localized agglomeration.
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