期刊
APPLIED ENERGY
卷 218, 期 -, 页码 184-191出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.apenergy.2018.02.108
关键词
Thermal energy storage; Phase change composites; Network structure; Thermal conductivity; Thermal stability
资金
- National Natural Science Foundation of China [51476038]
- Industry-University-Research Collaborative Innovation Major Project of Guangzhou Science and Technology Plan [201704030009]
- Industry-University-Research Collaborative Project of Nansha District Science and Technology Plan [2016CX013]
Novel microcapsules based phase change composites (PCC) with Improved thermal conductivity and thermal stability are developed. Different mass fractions (1%, 5%, 10% and 20%) of flake graphite (FG), expanded graphite (EG) and graphite nanosheets (GNS) acted as heat transfer promoters are employed to enhance thermal properties of PCC. The influences of carbon additives on forming network structure and promoting thermal conductivity are analyzed, the mechanism of heat transfer enhancement is further studied. The results showed that distinct carbon network structure in PCC was observed with 20%, 20%, 10% mass fraction of FG, EG and GNS, respectively. The corresponding thermal conductivity was increased up to 70.0 times of the pristine paraffin when PCC contains 20 wt% GNS. Negligible change in thermal properties of the PCC-GNS was confirmed after 500 times thermal cycling tests. Therefore, such enhancement in thermal properties of PCC can result in an improvement of heat storage efficiency, which will be more suitable for numerous thermal applications.
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