Investigation of the impact of triangular shape fins to enhancing the melting rate of phase change materials in triplex tube heat exchanger

The objective of thermal energy storage (TES) systems, including the triplex-tube heat exchanger (TTHX), is to optimize melting rates. The TTHX provides rapid phase shift and superior performance because of its extensive heat exchange surface. This research, however, goes beyond the conventional methods and investigates a novel combination of ways to enhance the TTHX to unlock its full potential. Novel TTHX design with triangular fins and multistage tubes introduced for the better melting performance of PCM. This paper presents a new method for improving phase change material (PCM) melting performance in a triplex-tube thermal energy storage system, a method that is a departure from the traditional approaches. Twelve different configurations of multistage inner tubes and Triangular fins are tested in a two-dimensional computational model to see how well they accelerate the melting process. Promoting the fast melting rate to address the issue of the low thermal conductivity of PCM (paraffin wax), Cu and multi-walled carbon nanotubes (MWCNTs) are added as nanoparticles. For accelerated and uniform melting, twelve different cases with different cogitation are investigated to determine the optimal sign parameters through numerical simulation. For PCM base heat exchanger optimization of TES system the, the current work offers valuable insights. The results of this study suggest that these novel heat transfer enhancement techniques can significantly improve the melting time of PCMs in TTHXs, a finding that is sure to pique the interest of researchers and professionals in the field.