Heat Transfer Augmentation Using Duplex and Triplex Tube Phase Change Material (PCM) Heat Exchanger Configurations

The significance of latent heat thermal energy storage is more substantial when compared to sensible due its higher capability. In this paper, transfer enhancement techniques for melting (charging) and solidification (discharging) by using external fins internal–external a phase change material (PCM) in duplex triplex tube exchangers (DTHX TTHX) are investigated numerically. A two-dimensional analysis carried out ANSYS Fluent various configurations. Moreover, the effect different critical parameters, number fins, fin length, thickness, exchanger evaluated terms total time complete PCM. Four cases investigated; 1 2 based upon DTHX while 3 4 TTHXs. By considering case as reference case, it found that reduce 48.76% 90.12%, respectively. Case achieves shortest PCM, decreased 92%. Solidification behaviour all four also investigated. novel configurations increase (doubled) supply fluid (HTF) at same significantly enhance melting/solidification characteristics without disrupting convectional currents during Tube materials with thermophysical properties rate improved high diffusivity material. length thickness.