Simulation modeling and analysis of a high temperature phase change heat storage and exchange device

doi:10.12028/j.issn.2095-4239.2018.0159

Abstract

Abstract: Phase change heat storage has become a research hot spot in recent years because of high storage capacity per unit volume, and constant heat storage/release process. In this paper, the heat transfer characteristics of a high temperature phase change heat storage unit are studied. The temperature distribution, heat transfer rate and heat storage efficiency during heat storage and release processes are studied using the computational fluid dynamics in FLUENT software environment. The mathematical modeling and simulation analysis focus on the effect of different heat transfer fluid velocity on the performance of the heat storage and release processes. The results show that an appropriate air velocity can be selected to achieve different heat discharge power and heat storage time, to meet various demands of different end users. Physical experiments are carried out, showing that the deviation of simulation results is small from experimental measurements.

Key words: phase change energy storage, energy storage devices, numerical simulation

CLC Number:

TQ028.8

XU Guizhi, HU Xiao, JIN Yi, YANG Cenyu, LI Chuan, DING Yulong. Simulation modeling and analysis of a high temperature phase change heat storage and exchange device[J]. Energy Storage Science and Technology, 2019, 8(2): 338-346.

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