文献类型：期刊文献

英文题名：Experimental and numerical investigation of a eutectic salt hydrate phase change material thermal storage unit for building heating application

作者：Hu, Biao[1,2]; Xia, Zhaohui[1]; Yang, Jinxin[2]; Li, Chunwang[1]; Ci, Enda[1]; Wang, Hui[1]

第一作者：Hu, Biao

机构：[1] College of Biochemical Engineering, Beijing Union University, Beijing, 100023, China; [2] College of Mechanical and Energy Engineering, Beijing University of Technology, Beijing, 100124, China

第一机构：北京联合大学生物化学工程学院

通讯机构：[1]College of Biochemical Engineering, Beijing Union University, Beijing, 100023, China|[1141726]北京联合大学生物化学工程学院;[11417]北京联合大学;

年份：2026

卷号：76

外文期刊名：Thermal Science and Engineering Progress

收录：EI(收录号：20262620975158);Scopus(收录号：2-s2.0-105042520565)

语种：英文

外文关键词：Charge storage - Energy efficiency - Heat storage - Latent heat - Solar energy - Specific heat - Storage (materials) - Thermal energy - Thermal insulation

摘要：Salt hydrate phase change materials (SHPCMs) stand out as exceptionally promising media for compact thermal energy storage, combining high latent-heat capacity with low material cost. This study investigates a compact heat energy storage unit filled with a eutectic SHPCM, tailored for building heating applications. A purpose-built test rig was commissioned to quantify the charging and discharging performance of the thermal-energy storage unit under controlled variations in heat-source temperature, flow rate and inlet orientation. The eutectic SHPCM71 exhibited a phase-change temperature of 71.06 °C and a latent heat of 160.54 kJ·kg?1, respectively. The heat energy storage unit demonstrated a high thermal efficiency of approximately 90.84% and excellent thermal insulation properties. Numerical simulations validated the experimental findings, indicating that under the heat source condition of 2 L/min and 85 °C, the eutectic SHPCM71 was entirely melted within 100 min. These findings underscore the promise of salt-hydrate thermal energy storage systems for efficient, scalable building heating applications, particularly in scenarios requiring integration with valley electricity or solar thermal energy. ? 2026 The Author(s)