间接式移动蓄热器相变材料熔化凝固实验.pdf

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CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
2015年第34卷第1期
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研究开发
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间接式移动蓄热器相変材料熔化凝固实验
郭少朋2,高维2,赵军2,安青松
(内蒙古科技大学能源与环境学院,内蒙古包头014010:2天津大学机械工程学院中低温热能高效利用
教育部重点实验室,天津300072)
摘要:针对回收工业余热用于分散式用户供热的应用背景,本文设计搭建了间接式移动蓄热器实验系统,选取
了赤藻糖醇作为相变材料,对相变材料进行了示差担描量热法和过冷度的测试分析,获得了相变材料较为准确
的蓄热性能参数和过冷度情况。此外,本文还通过对实验数据的整理及分析总结了间接式蓄热器内相变材料在
充放热过程中的温度变化情况,在此基础上分析了蓄热材料的熔化和凝固规律。实验结果表明:在相变材料的
熔化过程中,蓄热器上部相变材料熔化较快,下部相变材料熔化较慢;在相变材料的凝固过程中,蓄热器下部
相変材料凝固较快,上部相变材料凝固较慢。水平方向上材料熔化凝固情況基本一致。通过本文的实验研究
初步掌握了间接式移动蓄热器相变内材料的嫁化凝固情况,并由此分析了间接式移动蓄热器优化的方向,为该
技术的进一步完善奠定了基础。
关键词:可再生能源;相变材料;传热;间接式移动蓄热;赤藻糖醇
中图分类号:TK172:TK115文献标志码:A
文章编号:1000-6613(2015)01-0054-07
DOI:10.16085 /i.issn.1000-6613.2015.01.009
Experimental study on melting and solidification of phase change material
in indirect contact mobilized thermal energy storage container
GUO Shaopeng", GAO Wei, ZAO un, AN ingsong
( School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, Inner
Mongolia, China; Key Laboratory of Efficient Utilization of Low and Medium Grade Energy, MOE, Tianjin University
Tianiin 300072, China
Abstract: Based on the application background of supplying heat for distributed users with recovered
industrial waste heat, the experimental system of indirect contact mobilized thermal energy storage
was designed and set up. Erythritol was chosen as the phase change material. The accurate parameters
of heat storage performance and super-cooling of erithritol were obtained by testing and analyzing with
DSC and super-cooling technology. Besides, the temperature variation of phase change material in
indirect contact container during the charging and discharging processes was summarized by collecting
and analyzing the experimental data. Melting and solidification of phase change material was studied
The phase change material on the top melted faster than that at the bottom during the charging process
However, the phase change material at the bottom solidified faster than that on the top during the
discharging process. There was no distinct difference of melting and solidification along the horizontal
direction. With the experimental study in this paper, melting and solidification of phase change
material inside the indirect contact mobilized thermal energy storage container were investigated. The
收稿日期:2014-05-30;修改稿日期:2014-06-30。
与高效利用技术。联系人:赵军,博士,教授,博土研究生导师,主
基金项目:内蒙古白治区高等学校科学研究项目(NJZY14164)。
要硏究方向为可再生能源的转换及应用技术、逆循环(制冷和热泵
第一作者:郭少朋(1983-),男,博士,主要研究方向为能源存储理论及技术和新型热能系统及节能技术。E-mailzhaojun(@tju.edu.cn