控温热箱法相变墙体传热性能实验研究  

Warm Box Method Change the Wall Heat Transfer Performance of the Experimental Study

作　　者：张维维[1] 程建杰[1] 何嘉鹏[1] 张源[2] 

机构地区：[1]南京工业大学城市建设与安全工程学院,南京210009 [2]东南大学能源与环境学院,南京210096

出　　处：《科学技术与工程》2015年第17期158-163,共6页Science Technology and Engineering

基　　金："十二五"国家科技支撑计划资助项目(2011BAE14B06)资助

摘　　要：以填有相变材料的空心砌块所砌成的相变南外墙为研究对象,利用控温热箱装置研究其传热性能。研究表明:相变墙体的热惰性强于普通墙体,相变墙体对温度和热流的衰减与外界温度波幅的大小和平均温度有关,当外界温度波幅越大、外界平均温度与相变材料平均温度越接近,相变墙体对温度和热流的衰减和延迟效果越明显。所以相变墙体适合用于昼夜温差较大的地区,当相变温度与外界日平均温度相当则节能效果较好。Taking south wall which is cemented by the hollow block that is filled with phase-change-materials （PCMs） as the research object, the temperature controlled hot box device is used to study the heat transfer per- formance. The result shows that the thermal-inertia property of the phase-change-wall is stronger than that of ordinary wall. Besides, the size of external temperature amplitude and the average temperature have influence on how much the wall attenuates temperature and heat flux. The greater size of external temperature amplitude is, and the closer that the phase-change temperature and the average daily external temperature becomes, the more obvious that the wall attenuates and delays temperature and heat flux can get. So the phase-change wall is suitable for larger are- as where diurnal temperature difference is big, and when the phase-change temperature and the average daily exter- nal temperature are equivalent, the energy-saving effect is better.

关 键 词：控温热箱 相变材料 建筑节能 

分 类 号：TK519[动力工程及工程热物理—热能工程]