NUMERICAL INVESTIGATION OF MICROCHANNEL HEAT EXCHANGER HAVING RECTANGULAR CHANNEL WITH CONVEX RIBS

Multiport micro channel aluminum tubes are becoming more popular as components in heat exchangers. These heat exchangers are widely utilized in industrial settings and are reasonably priced due to their enormous production volume and wide variety of lengths and geometries. Micro channel tubes are therefore perfect for usage in small and lightweight heat exchangers. This paper presents thermal performance of a microchannel heat sink with convex ribs. To achieve good thermal performance, the Geometrical parameters of microchannel heat sink were optimised. Reynolds number 50 is used to assume the laminar flow regime. The findings demonstrate that the convex ribs significantly impact the thermal performance of microchannel. In comparison to a plain microchannel, the microchannels including convex ribs with a diameter of 0.4 mm have a greater Nusselt number. Nonetheless, there was a rise in the pressure decrease. Therefore, more research is needed to lessen pressure drop. Overall, efforts were made to improve heat transfer performance of microchannel, and the microchannel with convex ribs had the highest thermal performance.