复合相变材料的多层墙体优化研究  

Optimization Research on the Multilayer Wall Integrated with Phase Change Material

作　　者：李元昊[1] 齐全[1] 殷结峰[1] 孟曦[2] Li Yuanhao Qi Quan Yin Jiefeng Meng Xi(Xian Thermal Power Research Institute Co., Ltd, Xi＇an, 71000 Sichuan Agricultural University, Chengdu, 610065)

机构地区：[1]西安热工研究院有限公司,西安710000 [2]四川农业大学,成都610065

出　　处：《制冷与空调（四川）》2016年第6期684-689,704,共7页Refrigeration and Air Conditioning

摘　　要：研究以焓值-多孔介质的相变传热模型为基础、采用有限体积法对复合PCM层的多层墙体节能性进行模拟分析。结果表明:PCM层可以降低建筑年负荷,增大时间延迟,降低温度的衰减因子进而提高居住者舒适度。当PCM层设在外墙内侧时,获得较好的节能效果,且此时成都气象条件下最佳的固相线和液相线温度为14℃和26℃。与未复合PCM相比,PCM层为30mm和20mm时,内表面热流平均值分别减少13.36%和9.64%。Based on the enthalpy-porosity technique, a heat conduction model is developed and numerically analyzed to research the energy conservation of building multilayer wall integrated with a PCM layer by the finite volume method. The results show that the PCM layer can decrease the building annual load, increase the time lag, decrease the decrement factor and improve occupants＇ comfort. The stronger heat storage capacity is, the smaller indoor temperature fluctuation. It is more efficient that the PCM layer is located next to the internal surface and under this condition, the optimum solidus and liquidus temperatures are 14℃and 26℃ under the Chengdu climates. And the annual inner surface heat flow can be reduced up to 13.36% for the PCM layer of 30 mm and 9.64% for the PCM layer of 20 mm compared with no the PCM layer.

关 键 词：PCM 热物理属性 建筑节能 

分 类 号：TU86[建筑科学]