Abstract
In this paper, the characteristics of phase change materials employed in the warm temperature about 60-90 ℃ using a solar heat utilization, repeal heat and so on are discussed by the experimental values. In the experiment, sodium phosphate dibasic heptahydrate, Polyethylene glycol 4000, Calcium chloride dihydrate, Dodecanoic acid and sodium acetate trihydrate are chosen as a sample. A melting point and a latent heat are measured by a differential scanning calorimeter (DSC). for sodium acetate trihydrate, the relation between a mass percent of a sodium acetate and a latent heat are discussed in the range from about 40 wt% to 65 wt%.
