Thermal stability and behaviour of paraffin nano Al₂O₃, graphene and surfactant sodium oleate composite as phase change material

Abstract Organic phase change materials like paraffin possess high latent heat yet incredibly low thermal conductivity. For improving the conductivity, nanomaterials are introduced into materials. Thermal energy storage applications benefit from use of transition with conductivity and fusion. In this work to increase dispersion alumina graphene nanoparticles, a novel nanocomposite material was produced by utilizing sodium oleate as surfactant. The surfactant is prepared oleic acid methanol, mixture using oleate, Alumina Nanoparticle, Graphene in mass ratio 1:3:0.5 mixed weight percentage 7.5 10 stability study carried out. nanoparticles were synthesized microwave-assisted chemical precipitation approach which more effective modified hummer’s method. Thermocycling used for up 100 cycles determine melting point, heat, long-term nanocomposites material. Differential Scanning Calorimetry (DSC) evaluate behaviour samples, heating rate containing PCMs investigated. transient hot wire method then utilised assess PCM’s actual From obtained results, wt% additives show maximum (161.09 KJ Kg −1 ) an 42% Nanocomposite shows 57% higher But lower very (120.44 ). It understood results that nanoparticle addition gives positive rise heat.