摘要
三水醋酸钠(CH3COONa·3H2O)经过添加增稠剂和成核剂后具有广阔的应用前景,而其热物性参数影响着蓄热器的设计计算。T-history曲线法(Temperature History Method)简单实用,方便快捷。经水浴实验后,求得混合材料的固态导热系数为0.77 W/(m·℃),液态导热系数为1.12 W/(m·℃),相变潜热为247.6 k J/kg,与利用差示扫描量热法(Differential Scanning Calorimetry)测得混合材料在循环过程中的相变潜热值误差维持在7.2%内,能够满足实际使用要求。
Sodium acetate trihydrate added carboxymethyl cellulose and sodium pyrophosphate has a wide application prospect. At the same time, the thermophysical properties of sodium acetate trihydrate affect the design calculation of heat accumulator. T-history Method is a simple practical, convenient and rapid method. After water-bath experiment was carried out, the solid thermal conductivity was 0. 77 W/（m＆#183;℃）, liquid thermal conductivity was 1. 12 W/（m＆#183;℃）. At the same time, the latent heat was 247. 6 kJ/kg, the deviation compared with the latent heat based on Differential Scanning Calorimetry was below 7. 2%, which was acceptable for engineering use.
出处
《广州化工》
CAS
2015年第22期69-71,共3页
GuangZhou Chemical Industry
基金
交通运输部门应用基础研究项目(2012329815280)
教育部科技重点项目(201210090001)
