Numerical thermal–hydraulic analysis and multiobjective design optimization of a printed circuit heat exchanger with airfoil overlap fin channels

In this study, we numerically investigated the performance of a printed circuit heat exchanger (PCHE) featuring National Advisory Committee for Aeronautics (NACA) 0020 airfoil overlap fins integrated into its straight flow channels. Numerical simulations were performed by solving Navier–Stokes and energy equations to analyze liquid water at temperatures ranging from 30 90°C, which is possible use with geothermal heating system, example. The optimization PCHE fin geometry using nondominated sorting genetic algorithm II (NSGA-II) three design features: front, back, lengths. effectiveness pressure drop are evaluated as two objective functions. present study shows that, when Reynolds number falls between 1088 5000, overlapping airfoils exhibit lower drops higher convective flux relative separate airfoils, an increase in length always decreases positively. It also found that front 0.1 mm, back 0.119 0.203 mm leads almost same 22% decrease (which generally believed preferably maintain high transfer minimize drop, favorable design), compared base lengths 0.2 mm.