INVESTIGATION OF THERMAL BEHAVIOR OF THE SELECTED LATENT HEAT STORAGE MATERIALS FOR THE TEMPERATURE RANGE OF 40-80°C OF SOLAR HEATING APPLICATIONS

摘要

The purpose of a latent heat storage system with the phase change material (PCM) is gaining significance for the storage of thermal energy due to the huge availability of solar radiation. In this study six kinds of materials are chosen from the points of view of high latent heat of fusion, high specific heat, non toxic, and low cost. These are four organic materials, namely; paraffin wax (58-60°C), lauric acid, palmitic acid, Myristic acid, stearic acid, and one salt hydrate material such as sodium acetate trihydrate. An important aspect is to study a possible influence of the sample size on its thermal behavior. Hence, heating and cooling experiments have been performed to investigate the melting and freezing characteristics and effect of super cooling on the selected materials.