Solidification Enhancement in a Triple-Tube Latent Heat Energy Storage System Using Twisted Fins

This work evaluates the influence of combining twisted fins in a triple-tube heat exchanger utilised for latent thermal energy storage (LHTES) three-dimensional numerical simulation and comparing outcome with cases straight no fins. The phase change material (PCM) is annulus between inner outer tube, these tubes include cold fluid that flows counter current path, to solidify PCM release energy. performance unit was assessed based on liquid fraction temperature profiles as well solidification rate. study aims find suitable efficient number optimum values Re inlet transfer fluid. outcomes stated benefits using related those no-fins. impact multi-twisted also considered detect their influences process. reveal operation four decreased time by 12.7% 22.9% compared no-fins cases, respectively. Four improved discharging rate 12.4% 22.8% no-fins, Besides, reducing fins’ from six two, reduces 11.9% 25.6%, shows impacts innovative designs LHTES produce novel inventions commercialisation, besides saving power grid.