Examine the Effect of Various Fin Shapes in PCM in Solar Energy Storage Unit Using Computational Fluid Dynamics
Keywords:
Heat transfer fluid, Melting rate, Liquid fraction, Latent heat thermal energy storage, Fins.Abstract
Results from a numerical study of a "latent heat thermal energy storage (LHTES)" vessel's heat storage system are presented in this work. By integrating a new shape of fin into the heat storage process inside a latent heat storage tank, the internal "phase change material" has enhanced heat transfer efficiency. To make sure the numerical model is accurate, we use the experimental data. This study investigates the impact of a variety of architectural designs on the rate of PCM melting and the “temperature distribution” within a "latent heat thermal energy storage (LHTES)" tank. It is also measured how "natural convection" affects the energy storage system. The findings indicate that altering the angle arrangement between fins from 90º (case 1) to 120º (case 2) may lead to a substantial reduction in melting time, namely by 19.6%. To optimize the “energy storage efficiency” in the PCM, it is important to evenly distribute the fins with a set area. This allows for maximum use of both top buoyant convection and lower heat conduction. Case 2 and case 3 have identical fin areas, however their shapes vary. By using fins of varying shapes but with identical surface area, the heat transmission is improved and the rate of melting is reduced by 25.5% and 7.3% compared to case 1 and case 2, respectively. Using different shape and angle orientation of fins in case 4, with lower fin area as compare to remaining all cases. It enhances heat transport and decreases melting duration by 17.6% compared to instance 1, but raises it by 2.4% and 10.5% compared to case 2 and case 3, respectively.
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