Akademik Veri Yönetim Sistemi
PROGRESS IN NUCLEAR ENERGY, cilt.188, 2025 (SCI-Expanded)
In response to the increasing global energy demand, the rapid depletion of fossil fuels combined with the intermittent issues of renewable energy sources has led to a growing interest in nuclear energy. Consequently, the conversion of heat generated in nuclear reactors into useful electrical energy has become a primary focus. In this study, a corrugated counter-flow shell-and-tube heat exchanger was modeled and numerically analyzed to transfer the heat of high-temperature D2O, exiting from heavy water reactors to the working fluid, H2O. Subsequently, in addition to pure H2O, nanofluids containing Al2O3 and CNT at concentrations of 3 % (vol.), 6 % (vol.), and 9 % (vol.) were prepared and analyzed under identical conditions. ANSYS Fluent (R) software was utilized to perform numerical simulations based on the Computational Fluid Dynamics (CFD) approach. The resulting temperature variations and heat transfer parameters were presented. The results clearly demonstrated that increasing the nanofluid concentration enhances cooling performance. However, it was also observed that higher concentrations increase viscous effects, indicating the need for proper optimization to achieve optimal performance. In this context, the optimum performance was achieved using an Al2O3-based nanofluid with a 6 % (vol.) concentration. The analysis confirmed the applicability of the proposed heat exchanger and highlighted the potential for even higher performance through the use of different types of nanofluids.