Thermal effect of a thermoelectric generator on parallel microchannel heat sink

► The effect of the operation condition of a thermoelectric generator on a parallel microchannel heat sink is studied. ► The three-dimensional governing equations for fluid flow and heat transfer are solved using the finite volume method. ► The effect of the inlet plenum arrangement on the laminar flow distribution in the channels is considered. ► The particular focus is the geometrical effect of TEG (Thermoelectric generators) device on heat transfer characteristics in the heat sink. ► Results are in a good agreement with the previous experimental and theoretical studies.