二元混合无机盐相变温度和潜热的理论预测

Theoretical prediction for phase change temperature and latent heat of binary mixed inorganic salts

对二元无机盐的相变过程做了合理假设,并进行了推导。计算二元硝酸混合盐在不同配比下的相变温度和相变焓,并与文献中已有的相同比例下的二元硝酸盐的相变温度和相变焓实验数据做了对比,结果验证理论计算可行。依据此结论对二元碳酸盐和二元硫酸盐进行热特性参数计算,推测出二元硝酸盐、碳酸盐、硫酸盐中有利用潜质的相变材料。

Phase change process of binary inorganic salts was reasonably assumed and deduced.The phase transition tempera- ture and enthalpy of binary mixed nitrate salt were calculated under different mixed ratios and the experimental data were compared with those at the same proportion in the literatures.The results verified the theoretical feasibility.Thermal charac- teristic parameters of binary carbonate salts and binary sulfate salts were calculated on the basis of the conclusion.Thus the phase change materials that had utilization potential in binary nitrate, carbonate, and sulfate salts could be conjectured.