二元贮冷水合盐熔解热的差示扫描量热法研究

Study on Fusion Heat of Binary Salt Hydrates for Cool Storage by DSC

用差示扫描量热法 (differentialscanningcalorimetry)对二元贮冷水合盐的相变温度与熔解热进行了研究 ,实验结果对认识多元贮冷水合盐的相变过程的相变机理及选配贮冷水合盐材料 ,具有重要意义。

Fusion heats and melting temperatures of binary salt hydrate systems for cool storage have been measured by differential scanning calorimetry, including NH4Cl-NaF-H2O,NH4Cl-KCl-H2O and KCl-NaF-H2O. It is showed that more than one endothermic peak will appear for multi _ component salt hydrates, and different component has different effect on melting temperature and fusion heat. The results are important for understanding the mechanism of phase change of multi _ component salt hydrates.