Open AccessResearch on Optimization of Tube Structure of Phase Change Heat Storage Device
Author(s) -
Haojiang Bai
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2166/1/012040
Subject(s) - heat transfer , materials science , thermal conduction , convective heat transfer , thermodynamics , mechanics , tube (container) , enhanced heat transfer , thermal energy storage , phase change material , heat transfer coefficient , heat transfer enhancement , convection , thermal , physics , composite material
In view of the low heat transfer efficiency of the phase-change heat storage device and the inability to quickly respond to temperature changes, the fluid tube structure in the heat storage device was optimized, and four types of structures: circular structure, square structure, regular hexagon structure and regular triangle structure were compared and studied. Numerical simulation and optimization analysis are carried out on the pipes with the same thermal fluid circulation area but different sizes. The simulation results show that the triangular structure has the highest heat transfer efficiency in the initial stage of heat transfer due to the longest perimeter, and the heat transfer efficiency is positively correlated with the perimeter under the heat transfer mode in which heat conduction is the main body. Under the heat transfer mode dominated by convective heat transfer in the later stage of melting, the time required for the complete melting of phase change materials outside the square tube is the shortest.