Enhancing efficiency and sustainability: Utilizing high energy density paraffin-based various PCM emulsions for low-medium temperature applications

This research investigated the potential of high-energy-density Paraffin-based four different phase change materials (PCMs) (Paraffin 56/58, n-Eicosane, n-Octadecane, and n-Heptadecane) emulsions as a promising heat transfer fluid for low and medium-temperature applications at different concentrations. The primary focus is on elevating efficiency and sustainability within this domain. The investigation revolves around formulation and characterizations of these PCM emulsions, meticulously assessing their thermal attributes and stability. The results showed that producing these PCM emulsions using a high-energy manufacturing method with surfactant achieved superior dispersion stability and uniform size distribution throughout PCM emulsions. Among the pristine PCMs, n-Eicosane exhibited the highest latent heat of 252.7 kJ/kg during the melting process. In comparison, other PCMs, Paraffin 56/58, n-Octadecane, and n-Heptadecane demonstrated latent heat fusions of 197.7, 244.3, and 221.3 kJ/kg, respectively. Moreover, the energy storage density of PCM emulsions increased with increasing PCM concentration in basefluid. The highest energy storage density was observed in the case of 70 wt% n-Eicosane PCM emulsion, which is 401.1 kJ/kg. By examining the effectiveness of Paraffin-based PCM emulsions, this research aims to contribute to advancing eco-conscious and effective thermal management systems across diverse applications.