十水硫酸钠相变储能材料研究进展  

Research progress of sodium sulfate decahydrate phase changematerial

作　　者：喻彩梅 章学来[1] 华维三 YU Caimei;ZHANG Xuelai;HUA Weisan(Shanghai Maritime University,201306,Shanghai,China)

机构地区：[1]上海海事大学,上海201306

出　　处：《储能科学与技术》2021年第3期1016-1024,共9页Energy Storage Science and Technology

基　　金：船用高能超级电容系统和热管理关键技术研究(19DZ1203102)。

摘　　要：十水硫酸钠(sodium sulfate decahydrate,SSD)具有适宜的相变温度(2.4℃)、较高的相变潜热值(大于200 J/g)、价格低廉、来源广和安全无毒等优点,是一种广受关注的无机水合盐相变材料。然而,在应用过程中存在过冷度大、相分离严重及泄漏等问题。本文综述了近年来解决上述问题的研究进展、共晶盐相变材料的制备及相关应用,并对后续的研究方向做了如下展望:在降低过冷度方面,采用硼砂、制备共晶盐或添加外场扰动的方式来改善过冷;在抑制相分离方面,采用高导热的多孔材料吸附相变材料,利用真空浸渍法制备定型相变材料的方法来改善或消除相分离现象;在共晶盐材料方面,可以绘制二元相图,寻找新型共晶相变材料进行研究,尤其是目前结合较少的有机相变材料;在应用方面,注重结合十水硫酸钠相变储能装置和系统进行研究并拓宽其应用范围。Sodium sulfate decahydrate is a popular inorganic hydrated salt phase change material because of its suitable phase change temperature(32.4℃),high latent heat of phase change value(>200 J/g),low price,wide source,safety and non-toxicity.However,there are problems such as large subcooling,severe phase separation and leakage in the application process.This paper reviews the research progress in recent years to solve the above problems,the preparation of eutectic salt phase change materials and related applications,and makes the following outlook on the subsequent research directions:in terms of reducing the subcooling degree,use of borax,preparation of eutectic salts or addition of external field perturbation to improve subcooling;in terms of suppressing phase separation,highly thermally conductive porous materials can be used to adsorb phase change materials,and the method of preparing stereotyped phase change materials by vacuum impregnation can be used to improve or eliminate the phase separation phenomenon;in terms of eutectic salt materials,binary phase diagrams can be drawn to find new eutectic phase change materials for research,especially organic phase change materials that are currently less combined;in terms of applications,focus on researching and broadening the scope of application in conjunction with sodium decahydrate sulfate phase change energy storage devices and systems.

关 键 词：十水硫酸钠 过冷 相分离 定型相变材料 共晶盐 

分 类 号：TQ050.4[化学工程]