Effective method to simulate discharging process in packed bed heat storage tank with spheres
The objective of the present work is to simulate the discharging process of a packed bed of combined sensible and latent heat thermal energy storage tank.Accounting to the disadvantage of the model in previous researches,the model with effective apparent heat capacity is used to calculate the process of heat transfer in the packed bed.This model is simpler than porosity model that was always used to simulate this problem before,and it more accurately describes the process of heat transfer and flow in the TES tank.The mamerical results are verified by the experimental results.The numerical results are synchronously analyzed,which show the flow field affect the characteristic of discharge energy process intensively.