This work unveils the outcomes of the dynamics and thermal characteristics of an MHD ternary hybrid nanofluid passing through an upright porous microchannel with slip boundary conditions. A pressure gradient is the factor that causes the flow. A ternary hybrid nanofluid combines three types of nanoparticles in a base fluid for superior heat transfer. It's used in advanced cooling systems for electronics, engines, and solar energy. In this study, the shape dependent nanoparticles \(Ag\) , \(Cu\) , and \(Ti{O}_{2}\) are suspended into kerosene oil thus forming the combination \(Ag-Cu-Ti{O}_{2 }/\) Kerosene oil. First, the boundary conditions and the flow and heat transfer equations are made dimensionless using appropriate non-dimensional conversions. The numerical solutions are then obtained using the RKF45 method along with Shooting technique. The repercussion of various parameters such as Grashof number \((Gr)\) , Eckert number \((Ec)\) , Volume fraction \((\phi )\) , Permiability parameter \((K)\) , Hall parameter \((Ha)\) and Slip parameter \(\left(\alpha \right)\) on the velocity as well as temperature profile are visualized through the graphical records, Comparative analyses, accompanied by graphical representations, are conducted for both two types of combined nanofluids: ternary and hybrid. Also it is spotted where the ternary hybrid nanofluid has a better heat conduction compare to hybrid nanofluid \((Ag-Cu-Ti{O}_{2 }/\) Kerosene oil) and in comparison to the hybrid nanofluid ( \(Ag-Cu /\) Kerosene oil). The ternary hybrid nanofluid is found to produce more entropy when compare to hybrid nanofluid. Entropy increases with increasing values of Eckert numbr \((Ec)\) and permeability \((K)\) . The results aid in designing advanced cooling systems for electronics, biomedical devices, and microfluidic technologies.
