储能科学与技术2026，Vol.15Issue(9)：3476-3488,13.DOI:10.19799/j.cnki.2095-4239.2026.0349
不同PCM封装结构的相变水箱蓄放热性能研究
Study on heat storage and release performance of phase change water tanks with different PCM encapsulation structures
摘要
Abstract
To mitigate thermal stratification,low heat storage efficiency,and insufficient heat release stability in traditional solar thermal storage water tanks,this study performs a structural design,numerical simulation,and experimental investigation of phase change heat storage water tanks aimed at improving the energy utilization efficiency of the system.First,a small-scale phase change water tank heat storage experimental platform is built to compare the heat storage performance of phase change and traditional water tanks,and the numerical model is verified using the experimental results.Second,two types of phase change material encapsulation structures,namely,flat plate and annular,are designed.Based on the verified numerical model,simulation research is conducted to compare and analyze the performance differences between the two structures under heat storage and release conditions,and the influence of flow rate on the heat release characteristics is discussed.The experimental results demonstrate that the thermocline thickness of the phase change water tank is reduced by 10.7％compared with that of the traditional water tank while yielding higher heat storage efficiency.The numerical simulation results demonstrate that the heat storage completion time of the annular structure phase change water tank is shortened by 19.6％and the heat release time is prolonged by 13.7％compared with the flat plate structure.At low flow rates,the heat release duration of the tank is 4.19 times that of the traditional water tank,demonstrating superior thermal stratification effects and heat release stability.This study provides a theoretical basis and technical support for the engineering design and optimization of high-performance phase change heat storage water tanks.关键词
相变水箱/蓄放热/相变材料/封装结构Key words
phase change water tank/heat storage and release/phase change material/encapsulation structure分类
能源科技引用本文复制引用
王瑞敏,孙彬博,余庆华,冷光辉..不同PCM封装结构的相变水箱蓄放热性能研究[J].储能科学与技术,2026,15(9):3476-3488,13.基金项目
湖北省自然科学基金联合基金(2023AFD187). （2023AFD187）
