Study on Heat Transfer Process in Ice Storage Bali Filled with Metal Foams
Efficient and reliable storage systems for thermal energy are greatly needed in many applications where there is a shortage of heat supply.This study focuses on the evaluation of heat transfer enhancement in ice storage systems used in building air conditioning systems.A two-dimensional model describing the solidification process of water in a single ice ball filled with aluminum foams was presented by considering both phrase change heat transfer and natural convection.By using solidification/melting model and porous zone of FLUENT software,the solidification process of water filled with aluminum foams was numerically simulated under the first boundary condition.To determine the enhancement effects of the aluminum foam,the simulation results were compared with those of an ice ball filled with pure water.The simulation results showed that solidification time in an ice ball filled with aluminum foams was much shorter than that with water only.The model was also used to predict the effect of the size of the spherical shell and aluminum foam porosity on the solidified mass fraction and the time for complete solidification.It was shown that solidification time got longer with the increase of aluminum foam porosity and ball diameter.
Metallic foams Heat flux enhancement Thermal energy storage Numerical simulation
Xiu Yang Zhenqian Chen
School of Energy and Environment,Southeast University,Nanjing,China
国际会议
The First International Conference on Building Energy and Environment(第一届建筑能源与环境国际会议)
大连
英文
1709-1715
2008-07-01（万方平台首次上网日期，不代表论文的发表时间）