期刊
ENERGY AND BUILDINGS
卷 147, 期 -, 页码 41-46出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.enbuild.2017.04.005
关键词
Ternary eutectic mixture; Nano silicon dioxide; Form-stable composite phase change materials; Thermal properties; Human comfort
资金
- National Natural Science Foundation of China [U1507201]
- Guangdong-Hong Kong joint innovation projects [2016A050503020]
Phase change materials (PCMs) have great potential for the regulation of indoor temperature and building energy saving. In this study, capric acid-palmitic acid-stearic acid(CA-PA-SA) ternary eutectic mixture was impregnated into nano-silicon dioxide (nano-SiO2) to prepare a form-stable composite PCM (CAPA-SA/nano-SiO2). The phase change temperature range of the composite PCM is 17.16 degrees C-26 degrees C, which is suitable for indoor thermal environment. The high latent heat value and the low thermal conductivity of the composite PCM are 99.43 kJ kg(-1) and 0.08239 W (m K)(-1), which is helpful to stabilize the indoor temperature for a long time and improve human comfort. Furthermore, after 500 heating cooling cycles, the composite PCM showed good thermal and chemical stability. The maximum CA-PA-SA mass fraction of the composite PCM was determined as high as 75 wt.%, with no melted CA-PA-SA seeping from the composite PCM. All the results indicated that the composite PCM is suitable for storing excess solar radiation and reducing the amount and rate of heat loss of buildings in the winter, which will help reduce building energy consumption. (C) 2017 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据