Siberian Federal University

To select salt hydrates as the basis of phase change heating storage materials for specific applications, it is necessary to simultaneously take into account about 30 properties, including environmental, economic aspects, as well as stability parameters and physico- chemical properties. Chemometric methods, in particular, the principal component method and SIMCA, were used to identify the structure-property relationship of the use of salt hydrates as heating storage materials. Based on the analysis by these methods of the multidimensional classification of the properties, structure and composition of salt hydrates, the list of criteria for the selection of hydrates has been reduced to 10. Based on these criteria, salts have been selected as promising hydrates for obtaining phase change heating storage materials based on them: Ca(NO3)2·4H2O, CaCl2·6H2O, Zn(NO3)2·6H2O, CH3COONa·3H2O, MgCl2·6H2O and Mg(NO3)2·6H2O