Efficient Solar-to-Thermal Energy Conversion and Storage with High-Thermal-Conductivity and Form-Stabilized Phase Change Composite Based on Wood-Derived Scaffolds

被引：21

作者：

Chen, Bolin ^{[1
]}

Han, Meng ^{[1
]}

Zhang, Bowei ^{[1
]}

Ouyang, Gaoyuan ^{[2
]}

Shafei, Behrouz ^{[3
]}

Wang, Xinwei ^{[1
]}

Hu, Shan ^{[1
]}

机构：

[1] Iowa State Univ, Dept Mech Engn, Ames, IA 50011 USA

[2] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA

[3] Iowa State Univ, Dept Civil Construct & Environm Engn, Ames, IA 50011 USA

来源：

ENERGIES | 2019年 / 12卷 / 07期

关键词：

solar thermal energy; phase change material; thermal storage; thermal conductivity; carbonaceous material; carbon matrix composite; SHAPE-STABILIZATION; N-OCTADECANE; MICROCAPSULES;

D O I：

10.3390/en12071283

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Solar-to-thermal energy conversion is one of the most efficient ways to harvest solar energy. In this study, a novel phase change composite with porous carbon monolith derived from natural wood is fabricated to harvest solar irradiation and store it as thermal energy. Organic phase change material n-octadecane is physically adsorbed inside the porous structure of the carbonized wood, and a thin graphite coating encapsulates the exterior of the wood structure to further prevent n-octadecane leakage. The carbonized wood scaffold and the graphite coating not only stabilize the form of the n-octadecane during phase change, but also enhance its thermal conductivity by 143% while retaining 87% of its latent heat. Under 1-sun irradiation, the composite achieves an apparent 97% solar-to-thermal conversion efficiency.

引用

页数：11

共 25 条

[1]

Atwater HA, 2010, NAT MATER, V9, P205, DOI [10.1038/NMAT2629, 10.1038/nmat2629]

[2] Carbonization of wood for advanced materials applications [J].