潜热储能系统热力特性研究及应用分析  

Research on Thermal Characteristics of Latent Heat Energy Storage System and Application Analysis

作　　者：陈香玉 黄圣尧 张锋 汪洋 顾鹏程 周昊[2] CHEN Xiangyu;HUANG Shengyao;ZHANG Feng;WANG Yang;GU Pengcheng;ZHOU Hao(Xinjiang Oilfield Company Engineering and Technology Research Institute,Karamay 83001l,China;National Key Laboratory of Efficient and Clean Utilization of Energy,Zhejiang University,Hangzhou 310027,China;Sino-Singapore Carbon Technology(Beijing)Co.,Ltd.,Beijing 101100,China)

机构地区：[1]新疆油田公司工程技术研究院,新疆克拉玛依830011 [2]浙江大学能源高效清洁利用全国重点试验室,浙江杭州310027 [3]中新碳合科技(北京)有限公司,北京101100

出　　处：《锅炉技术》2024年第3期10-18,共9页Boiler Technology

基　　金：国家自然科学基金项目(42020619);湖南省自然科学基金项目(2018JJ3174)。

摘　　要：研究搭建了一小试规模的潜热储能系统,能对200~300℃的热量进行存储、释放,通过不同方式表征所使用相变材料的物理性质,研究其与应用场景的匹配性,同时分析所设计系统循环过程中的参数变化,研究系统热力特性。试验结果表明:所用二元硝酸盐能够稳定的储存温度200~290℃的余热,所使用的带螺旋型翅片换热管的潜热储能系统具有较高的热效率,试验台储热耗时51.75 min,完成47.809 MJ的能量储存,放热耗时43.5 min,释放出46.209 MJ能量,系统的储热效率为79.16%,放热效率为79.15%。在系统的循环过程中,系统累计输入能量60.398 MJ,输出能量36.578 MJ,循环效率为60.56%。The study built a pilot-scale latent heat storage system which is capable of storing and releasing heat at temperatures of 200-300℃.The physical properties of the phase change materials used were characterized in different ways to study their compatibility with the application scenarios,and the parameter variations during the cycling process of the de-signed system were also analyzed to study the system's thermal characteristics.The experi-mental results show that the binary nitrate can stably store the waste heat at the temperature of 200-290℃,the used latent heat storage system with spiral finned tubes has a high ther-mal efficiency,and the experimental device consumes 51.75 minutes for the energy storage of 47.809 MJ and 43.5 minutes for the energy release of 46.209 MJ,and the system's heat storage efficiency is 79.16%and heat release efficiency is 79.15%.During the cycling of the system,the accumulated heat input is 60.398 MJ,the accumulated energy output is 36.578 MJ,and the cycling efficiency is 60.56%.

关 键 词：潜热储能 相变材料 中高温余热 管壳式换热器 热力特性 

分 类 号：TK11[动力工程及工程热物理—热能工程]