Phase change materials (PCM) are used in many energy storage applications. Energy is stored as latent heat of fusion through melting and is released during re-solidification. Dispersing highly-conductive nanoparticles (NPs) into the PCM enhances the effective thermal conductivity & energy storage capability of the PCM. This colloidal mixture with the NPs in suspension is called as nanoparticle enhanced phase change materials (NEPCM). A commonly used PCM for energy storage application is the family of paraffins (CnH2n+2). Mixing copper oxide (CuO) NPs in the paraffin produces highly efficient...