套管式相变蓄热器蓄放热过程数值研究  

Numerical study on heat storage/release process in a phase change heat accumulator with casing

作　　者：王国林 WANG Guoin(Jiangsu Foster Petrochemical Equipment Co.,LTD.,Taizhou 225300,China)

机构地区：[1]江苏福斯特石化装备有限公司,江苏泰州225300

出　　处：《能源工程》2024年第2期7-12,共6页Energy Engineering

摘　　要：提出一种用于建筑节能的新型套管式相变蓄热器,研究非稳态条件下其内部流动传热的机理。采用计算流体动力学方法对套管式相变蓄热器蓄放热过程的系统进行了数值模拟。分析了载热体温度和速度对相变材料熔化和凝固相变速率的影响,计算结果表明:随着蓄热器传热温差的增大和载热体速度的提高,套管式相变蓄热器蓄放热性能越好。所得结论为实现高效快速的蓄放热过程提供可借鉴的理论与应用基础。A new type of tubular phase change heat accumulator for building energy saving is proposed.The heat transfer mechanism of its internal flow under unsteady conditions is studied.The heat storage/release process of the casing phase change accumulator is numerically simulated by computational fluid dynamics method.The effects of heat carrier temperature and velocity on the melting and solidification rate of phase change materials are analyzed.The calculation results show that with the increase of heat transfer temperature difference and the increase of heat carrier velocity,the heat storage/release performance of the tubular phase change accumulator is better.The conclusions can be used as reference for the realization of efficient and rapid heat storage/release process.

关 键 词：建筑节能 相变 蓄热 数值模拟 传热性能 

分 类 号：TK02[动力工程及工程热物理]