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

通讯作者：Wang, H[1]

机构：[1]Beijing Union Univ, Coll Biochem Engn, Beijing 100023, Peoples R China;[2]Beijing Univ Technol, Coll Mech & Energy Engn, Beijing 100124, Peoples R China

第一机构：北京联合大学生物化学工程学院

通讯机构：[1]corresponding author), Beijing Union Univ, Coll Biochem Engn, Beijing 100023, Peoples R 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);WOS:【SCI-EXPANDED(收录号:WOS:001807425300001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (No.52306290) and the Academic Research Projects of Beijing Union University (No.ZK10202506) .

语种：英文

外文关键词：Eutectic salt hydrate; Phase change materials; Thermal energy storage unit; Heat storage performance; Numerical simulation

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 degrees 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 degrees 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.