2026-04-17T02:34:13Zhttps://recercat.cat/oai/request

oai:recercat.cat:10459.1/842352024-12-05T22:54:32Zcom_2072_3622col_2072_479130

00925njm 22002777a 4500 dc Paroutoglou, Evdoxia author Fojan, Peter author Gurevich, Leonid author Furbo, Simon author Fan, Jianhua author Medrano Martorell, Marc author Afshari, Alireza author 2022-11-16T12:40:48Z 2022-11-16T12:40:48Z 2022-10-17 2022-11-16T12:40:48Z Latent heat thermal energy storage (LHTES) with Phase Change Materials (PCM) represents an interesting option for Thermal Energy Storage (TES) applications in a wide temperature range. A tubular encapsulation model of an LHTES with PCM was developed, and the calculated data were analyzed. In addition, a parametric analysis for the preferable system geometry is presented. Organic paraffin RT18 with a melting point of 18 °C was utilized as PCM for different geometries of LHTES, and the addition of internal and external fins and their influence on LHTES thermal conductivity was investigated. One-step heat exchange from outdoor air to PCM and from PCM to water characterizes the LHTES system in solidification and melting processes, respectively. A 2D axisymmetric model was developed using Comsol Multiphysics 6.0. The LHTES unit performance with PCM organic paraffin RT18 encapsulated in electrospun fiber matrices was analyzed. The study results show that longer internal fins shorten the melting and solidification time. Direct contact of PCM electrospun fiber matrix with 23 °C water showed instant melting, and the phase change process was accelerated by 99.97% in the discharging cycle. The authors acknowledge the support provided by ELFORSK, a research and development program administrated by Danish Energy http://hdl.handle.net/10459.1/84235 LHTES PCM Numerical simulation Comsol Multiphysics A Numerical Parametric Study of a Double-Pipe LHTES Unit with PCM Encapsulated in the Annular Space