PHASE CHANGE MATERIAL

A phase change material and a process to prepare a phase change material. The phase change material (PCM) may be prepared by mixing, 94 - 98 % by weight Calcium Chloride Pentahydrate I Semipentahydrate with 1 - 5 % by weight Borax and 0.1 - 2 % by weight Fumed Silica I Silica Gel, homogeneously. 1 - 10 % by weight Potassium Fluoride and 0.1 - 1 % by weight Strontium Chloride Hexahydrate is then mixed with the above mixture in the same mixer again homogeneously at room temperature and pressure to obtain the PCM.