相变材料的大体积封装形式及其导热增强研究进展

Review of PCM in Macro Encapsulated Form and Improving Conductivity

相变储能材料利用相变潜热可以在时间和空间上调整热能的平衡,将其应用于建筑可以降低建筑的能耗。相变材料在建筑应用中有不同的封装形式,详细介绍了目前可应用于建筑节能的大体积封装相变材料的不同类型,以及为提高大体积封装形式的相变材料热交换效率的导热增强方法,主要包括添加碳素材料、纳米金属填料、金属翅片等。在详细总结及深入评述目前相关研究发展现状的基础上,还探讨了今后提高大体积封装相变材料热导率的研究重点及一些可能的发展趋势。

Phase change materials can adjust the spatial and temporal balance of thermal energy bymaking use of phase change latent heat. Its application can reduce the energy consumption of buildings.There are different encapsulation forms of phase change materials applied in building. Various types ofmacro encapsulated phase change materials that can be used for sewing energy consumption of buildingsare introduced in details. And thermal conduction enhancement methods for the heat exchange efficiency ofphase change materials in the macro encapsulated form are explored as well. These methods mainly includethe adding of carbon materials, metal nanoparticles and metal fins. On the basis of detailed summarizationand in-depth review of existing relevant research development status, the improvement of the thermal conductivityof macro encapsulated phase change materials in the future is expounded, as well as some possibledevelopment tendency of PCM in the macro encapsulated form.