三水醋酸钠过冷溶液过冷特性的实验研究  

EXPERIMENTAL INVASTIGATIONS ON CHARACTERISTICS OF SUPERCOOLED LIQUIDS OF SODIUM ACETATE TRIHYDRATE

作　　者：陈子乾[1] 张炫 田宇[1] 谷怀珍 孙文红 何开岩[1] Chen Ziqian;Zhang Xuan;Tian Yu;Gu Huaizhen;Sun Wenhong;He Kaiyan(Research Center for Optoelectronic Materials and Devices,School of Physical Science and Technology,Guangxi University,Nanning 530004,China;Guangxi Key Laboratory of Processing for Non-ferrous Metal and Featured Materials,Guangxi University,Nanning 530004,China)

机构地区：[1]广西大学物理科学与工程技术学院,光电材料与器件研究中心,南宁530004 [2]广西大学,广西有色金属及特色材料加工重点实验室,南宁530004

出　　处：《太阳能学报》2020年第12期185-189,共5页Acta Energiae Solaris Sinica

基　　金：广西自然科学基金(20150954);国家自然科学基金(51868002)。

摘　　要：实验研究三水醋酸钠在不同水含量和不同过冷溶液液面高度时对激发温度和过冷液态稳定性的影响。研究发现,添加羧甲基纤维素钠(CMC)和三水醋酸钠含水量为42%以及液面高度在6 cm以下时,过冷液态120 d未出现晶析现象,证明了利用三水醋酸钠实现长期稳定的相变储热的可行性。In this paper the influences of the water percentages of SAT by adding water and the heights of the supercooled liquid of SAT on the activation temperatures as well as the stability of the supercooled liquid state are investigated. It is found that the supercooled SAT liquid with 42% of water and adding carboxymethylcellulose sodium(CMC)is very stable under the liquid height of 6 cm. Phase separation still is not obviously observed in the supercooled SAT liquid after 120 days. It is proved that it is possible to utilize the latent heat of SAT for long-term heat storage.

关 键 词：三水醋酸钠 过冷溶液 晶析 热能储存 相变 

分 类 号：TK512.4[动力工程及工程热物理—热能工程]