颗粒型相变储能复合材料

以多孔介质和有机相变物质复合而成颗粒型相变储能复合材料,研究了其相变储能性能、耐久性能以及该复合材料在建筑物综合节能方面的功效。研究结果表明:有机相变物质可渗入多孔介质中从亚微米到数百微米的孔径空间内,占据大部分孔空间,形成的复合材料具有显著的相变储能功能和优良的耐久性能。复合材料的相变储能性能一方面受到有机相变物质在多孔介质中体积含量的影响,另一方面受到多孔介质孔结构骨架的影响。与传统保温隔热材料——膨胀珍珠岩相比,相变储能复合材料具有更强的建筑综合节能功效。 

GRANULATED PHASE CHANGING COMPOSITE FOR ENERGY STORAGE

The porous materials and organic phase-changing materials were selected to fabricate a granulated phase-changing composite for energy storage. The energy-storing performance, durability and heat insulation of this composite were studied. The results show that organic phase-changing materials can penetrate into the porous space of pore diameters from sub-micrometers to several hundreds micrometers, and occupy major part of the porous space. The resulting composite exhibits outstanding energy-storing performance and good durability. The phase-changing behavior is influenced by the volume fraction of organic phase-changing materials and the porous structure. The energy saving performance of the composite for building is superior to that of expanded perlite.