Research on Ways to Charge a Phase Change Heat Accumulator

the work is devoted to the study of methods for charging thermal accumulators of phase transition. The effectiveness of using such units is explained by the possibility of accumulating and further using large volumes of thermal energy compared to sensible energy batteries. The process of charging a heat accumulator depends on many factors, including the direction of supply of coolant through the heat exchange surface inside the heat accumulator structure. Increasing the rate of heat charge is an important task, since their application requires that energy storage and further transfer be carried out in less time while maintaining overall efficiency. The paper presents the main properties of the heat-storing material that was used in the design of the heat accumulator, describes the methodology for conducting the experimental part of the study, and provides a description of the experimental stand. Based on the data obtained, an analysis of the results was carried out, which presented a description of the heat exchange process inside the phase transition heat accumulator, and also highlighted the shortcomings of the used heat accumulator model. As a result, provisions were formed for modernizing the design of the thermal accumulator and conducting further research, and conclusions were drawn about the effectiveness of using various charging methods. The research was carried out under a state order with agreement number 075-03-2025-458 dated 17/01/2025.