文献类型：期刊文献

中文题名：成核剂对CaCl_2·6H_2O相变材料储热性能的影响

英文题名：THERMOPROPERTIES RESEARCH ON NUCLEATORS-CaCl_2·6H_2O COMPOSITES UNDER DISTINCTIVE SYSTEMS

作者：刘栋[1];徐云龙[1]

机构：[1]华东理工大学材料科学与工程学院,上海200237

年份：2007

卷号：28

期号：7

起止页码：732

中文期刊名：太阳能学报

外文期刊名：Acta Energiae Solaris Sinica

收录：CSTPCD;;Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：上海微纳科技有限公司预研基金资助

语种：中文

中文关键词：六水氯化钙;过冷;成核剂;储热;杂质

外文关键词：calcium chloride hexahydrate; sapercooling; nucleators; energy storage; impurity

摘要：用步冷曲线法和TGA-DSC联用研究了室温冷却开放体系和冰水浴冷却封闭体系两种工况下硼砂、SrCl2·6H2O、Ba(OH)2·8H2O等7种成核剂-CaCl2·6H2O复合体系的储热性能,探讨了工业级CaCl2·6H2O原料中主要杂质NaCl和MgCl2对成核剂成核作用的影响。研究结果表明:两种工况下,锶盐比其他成核剂的成核效果好,可使体系过冷度降低至3-4℃,但其热循环性能不稳定;钡盐为成核剂的复合储热体系循环性能明显优于其他体系,但其过冷现象严重。工业级CaCl2·6H2O中的主要杂质NaCA、MgCl2对PCM存在屏蔽成核效应,使体系储热性能恶化。
Thermoprproperties of 7 nucleators-CaCl2 · 6H2O composites such as borax, SrCl2 · 6H2O, Ba（OH）2·8H2O were researched with gradually cooling method and TGA-DSC under room temperature cooling,open system and icewater cooling,closed system. How main impurities of industrial class CaCl2·6H2O-NaCl and MgCl2 affected nucleation. It is shown that strontium salts nucleate better than other additives and can reduce under cooling degree to 3-4℃. under both technical systems, but they are instable when recycling. Barium salts-PCM composites are obviously superior to other PCMs on recycling but they under cool terribly. Main impurities of industrial class CaCl2·6H2O-NaCl and MgCl2 shield nucleation and deteriorate PCMs＇ thermoproperties.