摘要
为改善无机水合盐类相变材料存在的过冷及相分离两大缺陷,特以三水醋酸钠为原料,通过复配不同的成核剂和增稠剂获取最优配方,并研究该体系的相变参数。结果表明:成核剂焦磷酸钠能有效抑制三水醋酸钠体系的过冷度,且其有效添加量为0.45g;增稠剂聚丙烯酰胺可有效消除相分离现象,其有效添加量为0.15g;所得最佳三水醋酸钠复合相变材料储能体系的熔点为58.65℃,潜热值为250.8J/g。
In order to rectify two common defects of inorganic salt hydrates：phase separation and supercooling,a high-performance composite phase change material（PCM）based on the sodium acetate trihydrate was prepared by optimizing the ratio of the nuclear agents and the thickening agents,with parameters of phase change analyzed accordingly.The results showed that adding 0.45 g sodium pyrophosphate as the nuclear agent and 0.15 g polyacrylamide as the thickening agent could effectively eliminate phase separation and inhibit supercooling degree respectively（based on 5 g sodium acetate trihydrate）.The phase change enthalpy and melting point of modified sodium acetate trihydrate were 250.8 J/g and 58.65℃respectively.
作者
齐昊
章志强
王佳豪
张治国
索艳格
范志庚
QI Hao;ZHANG Zhiqiang;WANG Jiahao;ZHANG Zhiguo;SUO Yange;FAN Zhigeng(School of Mechanical and Energy Engineering,Zhejiang University of Science and Technology,Hangzhou 310023,Zhejiang,China)
出处
《浙江科技学院学报》
CAS
2018年第3期199-204,共6页
Journal of Zhejiang University of Science and Technology
基金
浙江省食品物流装备技术研究重点实验室开放基金项目(KF2016016zd
KF2016013yb)
国家级大学生创新创业训练计划项目(201711057009)
关键词
相变材料
储能
三水醋酸钠
过冷度
phase change material
energy storage
sodium acetate trihydrate
supercooling degree
