Simulation study on heat storage and release characteristics of stacked graphite particles
SONG Kai-xin
WANG Qi-min
Abstract：Stacked graphite particles are selected as solid heat storage materials,and the heat storage and release performance of the stacked graphite particles model is analyzed by simulation with Ansys software.The heat storage regenerator is heated for 10 hours with the heating power of 250 kW,and then the heat is released by ventilating the air at 523 K for 8 hours.The results show that after heating for 10 hours,the overall heating curve of the heat storage regenerator is quite different,and the heating trend is convex near the heat source,while the edge of the heat storage regenerator is concave,so that the overall temperature distribution is uneven and the maximum temperature difference is more than 400 K.After 8 hours of air cooling,the temperature distribution at the outlet interface of the heat storage regenerator model is H-shaped,the temperature of the heat storage regenerator close to the ventilation duct decreases rapidly through air convection heat transfer,and a large amount of heat in the remaining H-shaped part can not be released uniformly,and the maximum temperature difference is 195 K.
Keywords：stacked particlesthermal conductivityspecific heat capacitynumerical simulation
Publication Date：2023-11-15
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 29-33 )