Abstract
In this research, an attempt has been made to enhance the heat transfer for a plate-fin heat exchanger with the new arrangement of classic delta winglets used for vortex generators and compared the same with the existing literature. The computational domains are developed by dislocating delta winglets from their original position, so there is no additional pressure loss with flow geometry. All the flow domains are analyzed by computing the 3D Reynolds averaged Navier–Stokes equations using ANSYS Fluent. Two different working fluids are considered one is water and nanofluids (water with Aluminum oxide). Heat transfer characteristics are analyzed for different placements of winglets for both water and nanofluids. The plate-fin heat exchanger’s performance has been optimized with the optimum location of winglets and nanofluids from the analysis of numerical results. For the case of 0% nanofluids at 300 Reynolds number, Case 3 Nusselt number has been increased by 23.2% with a decrease in pressure drop of 17.7% with the dislocation of one winglet. It represents the enhancement of heat transfer.
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