Research on Temperature Distribution of Single Tank Using Molten Salt for Thermal Storage

Abstract The temperature distribution of the storage tank with molten salt as the heat storage medium during the discharge process is introduced in the article. In order to analyze the temperature distribution of molten salt in a storage tank and improve the heat exchange effect, the exothermic process of a single thermal storage tank equipped with an immersion heat exchanger was studied. Fluent software was used in the analysis to study the influence of different heat transfer areas, structures and layouts on temperature distribution by means of numerical simulation. The results show that if the heat exchange area is increased, the temperature uniformity and heat transfer speed in the tank will strengthen. By reducing the tube diameter of heat exchanger, the temperature difference in the axial direction can be reduced. When the heat exchanger is arranged above, the temperature stratification in the tank will be improved, and the heat exchange will be more sufficient.