Evaluation of Melting Mechanism and Natural Convection Effect in a Triplex Tube Heat Storage System with a Novel Fin Arrangement

In this research, a numerical analysis is accomplished aiming to investigate the effects of adding new design fins arrangement vertical triplex tube latent heat storage system during melting mechanism and evaluate natural convection effect using Ansys Fluent software. tube, phase change material (PCM) included in middle while transfer fluid (HTF) flows through interior exterior pipes. The proposed are triangular attached pipe inside PCM domain two different ways: (1) base connected pipe, (2) tip part directed domain. height calculated have volume equal that uniform rectangular fins. Three cases considered as final evaluation toward best case follows: fin (case 3), reverse with constant 12), (3) 13). results show total times for 3 12 increase by 4.0 10.1%, respectively, compared 13. Since at bottom unit melts slower due effect, flat added cases. Furthermore, rates reduced 4.5 8.5%, 13, which selected having lowest time (1978s) highest rate (81.5 W). general outcome research reveals utilizing tringle enhances thermal performance rate.