化工进展2017，Vol.36Issue(6)：2123-2130,8.DOI:10.16085/j.issn.1000-6613.2017.06.022
带有空穴的相变胶囊蓄热过程分析
Analysis of thermal energy storage for encapsulated phase change material with a void
摘要
Abstract
Phase change energy storage technology is an efficient way of energy storage which guarantees the the efficient conversion and utilization of renewable energy, such as solar and wind energy. A two dimensional model of the encapsulated phase change materials(EPCM)with an air void is developed in this paper. The numerical simulation of the thermal energy storage process was conducted for the EPCM model using the enthalpy-porosity method and volume of fluid method(VOF) of the Fluent software. The effect of gravity,buoyancy-driven convection and the air void in the capsule, on the thermal energy storage process was considered. At the same time, the effect of various velocities and flow directions relative to gravity of the heat transfer fluid(HTF)and the blockage ratios on encapsulated phase change were studied. The results showed that the flow direction of HTF had little effect on the thermal energy storage process. However, the air void in capsule had negative effect on the thermal energy storage process. With the proper ratios of velocity to the blockage, the thermal energy storage process of the EPCM would be accelerated. The results provide a reference for the future research and application of the EPCM.关键词
蓄热胶囊/相变/空穴/影响因素Key words
EPCM/phase change/air void/influencing factors分类
能源科技引用本文复制引用
张仲彬,刘永强,姜铁骝,李勇..带有空穴的相变胶囊蓄热过程分析[J].化工进展,2017,36(6):2123-2130,8.基金项目
吉林省科技厅项目(20160203008SF). （20160203008SF）
