Mass and heat transport investigation of magnetic nano-encapsulated phase change materials \((\text{NEPCMs})\) , with paraffin as shell and octadecane as core, distributed into ethylene glycol inside a porous cavity is inspected in the current work. The converted modeled equations are elucidated by implementing finite element method. The \(\text{PCMs}\) are capsulated in layer typed shells and core releases or stores higher amount of heat during solidification or melting process. The intensity of several influencing parameters like fusion temperature, thermal radiation, Stefan number, magnetic parameter, volume fraction parameter, thermal conductivity parameter, dynamic viscosity parameter and porosity parameters on the fluid flow, temperature, concentration and heat capacity ratio contours is examined in detail and plotted through graphs. The dimensionless rate of heat transfer at both cold and hot fences for altered values of influenced parameters is also illustrated through plots. Important findings reveal that the values of Nusselt number mitigates with rise in values of Stefan number. The area of the ribbon-shaped region at the middle of the enclosure amplifies as Stefan number values rise from 0.1 to 0.3 which means the \(\text{PCM}\) has taken higher time to transfer heat from solid stage to fluid stage.
