Na2SO4·10H2O相变蓄冷材料的研究进展  

Research Progress of Na_2SO_4·10H_2O Phase Change Cooling Storage Materials

作　　者：张志同[1] 王瑾[1] 柳建华[1,2] 赵永杰[3] 杨宁[1] 

机构地区：[1]上海理工大学,上海200093 [2]上海市动力工程多相流动与传热重点实验室,上海200093 [3]中国船舶重工集团公司第七〇四研究所,上海200031

出　　处：《建筑节能》2016年第8期55-59,共5页BUILDING ENERGY EFFICIENCY

基　　金：上海市教育委员会重点学科资助项目(150502)

摘　　要：共晶盐蓄冷空调系统的相变温度在0℃以上,可采用常规冷水机组蓄冷,机组性能系数高,可对现有空调系统进行改造。Na_2SO_4·10H_2O因为其来源广、价格低廉、相变潜热高、熔点低等优点,是理想的空调蓄冷用共晶盐材料主材。但其有过冷度较高、易分层、材料易老化、性能易发生衰减等缺点,从而未能广泛运用于空调蓄冷。从相变潜热、相变温度控制、减小过冷度、防相分离四个方面介绍了Na_2SO_4·10H_2O相变蓄冷材料的研究进展,为该蓄冷材料的实际运用研究提供参考。Eutectic salt cooling storage air-conditioning system, the phase change temperature above0°C, can be adopt to conventional chiller cooling storage and reconstruct the existing air-conditioning systemfor its high performance coejficienL Na2SO4 ·10H2O is the ideal eutectic salt phase change materials ofcooling storage air-conditioning system for its wide sources, low price, high latent heat, and low meltingpoint. But it has a high degree of supercooling, and it is easy to layer, easy to aging and decaying, and othershortcomings, which is not widely used in practical engineering applications. The research progress ofNa2SO4· 10H2O phase change cooling storage materials are described from four aspects, including latentheat of phase change, control of phase change temperature, decrease of the supercooling degree and p reventionof phase separation, providing a reference for the research and practical application of the storagematerials.

关 键 词：相变潜热 相变温度 过冷度 相分离 

分 类 号：TU5[建筑科学—建筑技术科学]