Phase change materials (PCMs) and particularly microencapsulated phase change materials (MPCM) have introduced new ways to enhance the energy storage capacity of a system due to the high latent heat and high storage density of these materials. This experimental and numerical research aims to investigate the process in a pulsating fluidized bed with MPCMs operating as an energy storage device. Experiments were carried out with MPCM (PX52) in a pulsating fluidized bed with the 0.2 m ID and 1 m height. Numerical simulation was performed using the Eulerian-Lagrangian approach in a symmetric two-dimensional model. Pulsating gas flow at a temperature of 60 °C with a frequency range of 1–10Hz for 200 μm mean diameter was used in the experiment and simulation. The effect of pulsating on the efficiency of the energy storage was examined at 1.5, 2, and 2.5 of the minimum fluidization velocity (U_mf). Also, simulation and experiment were performed in the continuous mode for comparison with the published research of others. Results of simulation and experimental data of this study and others were noticed in close agreement. The simulation and experimental results revealed an optimal pulsating frequency, at which the energy storage in the fluidized bed is highest for 2 U_mf in 7Hz, which is 92% for pulsating and 64% for continuous flow. Besides, using 7Hz and 10Hz frequencies enhanced the charging time with higher efficiency and reached the stabilized temperature in a shorter time.

相变材料（PCM），尤其是微封装相变材料（MPCM），由于这些材料的高潜热和高存储密度，引入了增强系统能量存储能力的新方法。这项实验和数值研究旨在研究脉动流化床中的过程，其中 MPCM 作为储能装置运行。在具有 0.2 m ID 和 1 m 高度的脉动流化床中使用 MPCM (PX52) 进行了实验。在对称二维模型中使用欧拉-拉格朗日方法进行数值模拟。在实验和模拟中使用了温度为 60°C、频率范围为 1-10Hz、平均直径为 200 μm 的脉动气流。在 1.5、2 和 2.5 处检查了脉动对储能效率的影响最小流化速度 (U _mf )。此外，模拟和实验以连续模式进行，以便与其他人发表的研究进行比较。本研究的模拟结果和实验数据与其他研究结果非常吻合。模拟和实验结果揭示了最佳脉动频率，在该频率下，流化床中的能量存储在 7Hz 时为 2 U _mf最高，脉动为 92%，连续流动为 64%。此外，使用 7Hz 和 10Hz 频率可以提高充电时间，提高效率，并在更短的时间内达到稳定温度。