HEAT STORAGE MATERIAL

PURPOSE: To provide a heat storage material comprising a mixture of CaCl2, ZnCl2 and water which fuses and freezes at a fixed temperature within a specified temperature range and insures consistent heat storing and dissipating cycles over a long period. CONSTITUTION: The heat storage material consists of CaCl2, ZnCl2 and water. It is a mixed salt prepared by adding ZnCl2.0.5H2O, ZnCl2.H2O, ZnCl2.1.5H2O, ZnCl2.2H2O and ZnCl2.2.5H20 to a mixture of CaCl2.6H2O, ZnCl2(anhydride) and water. When at least one of MgCl2.6H2O, AlCl2.6H2O, MnCl2.4H2O, KCl and NH4Cl is added to the mixed salt, a latent heat storage material is obtained which fuses and freezes at a fixed temperature between -16 and 28°C and repeats heat storing and dissipating under stabilized conditions over a long period.COPYRIGHT: (C)1983,JPO&Japio