作　　者： ; ; ; ; ;

机构地区： 中山大学工学院

出　　处： 《无机盐工业》 2009年第2期56-58,共3页

摘　　要： 三元硝酸熔盐是化学工业中的主要高温载热体,但是由于熔盐熔点高、腐蚀性强,在测试过程中存在对流和辐射换热,导热系数的测量结果不太准确。利用Kincaid-Eyring方程、Rao方程、Gustafsson方程和硬球模型等模型公式分别计算了三元硝酸熔盐的导热系数。与前人实际测量值进行了比较,发现利用近似硬球模型估算得出的结果与给出的测量值比较接近,这种模型估算的结果比较合理。 Ternary nitrate salt is a major kind of high-temperature heating medium in chemical production. Measurement results of thermal conductivity are not very accurate because of high inching point,strong corrosiveness and convective and radiative heat transter. Therefore, thermal conductivity of ternary nitrate salt was calculated by using various formulas of the models,such as Kineaid - Eyring equation, Rao equation, Gustafsson equation, and rough hard-sphere model. Compared to the previous measuring values, results showed that the ealeulated values from rough hard-sphere theory is similar to measured values. Therefore, rough hard-sphere theory is reasonable for calculation of thermal conductivity of molten salts.

关 键 词： 高温熔盐 三元硝酸熔盐 导热系数

领　　域： [化学工程]