Thermal properties of ternary carbonate/T-ZnOw for thermal energy storage in high-temperature concentrating solar power systems

被引：15

作者：

Zhang, Zhaoli ^{[1
]}

Yuan, Yanping ^{[1
]}

Ouyang, Liping ^{[1
]}

Zhang, Haiquan ^{[1
]}

Cao, Xiaoling ^{[1
]}

Sun, Liangliang ^{[1
]}

Phelan, Patrick E. ^{[2
]}

机构：

[1] Southwest Jiaotong Univ, Sch Mech Engn, Chengdu 610031, Sichuan, Peoples R China

[2] Arizona State Univ, Sch Engn Matter Transport & Energy, Tempe, AZ 85287 USA

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2017年 / 93卷

关键词：

Ternary carbonate; Tetra-needle like ZnO whiskers; Thermal properties enhancement; Cyclic stability; PHASE-CHANGE MATERIALS; ORGANIC RANKINE-CYCLE; HEAT-TRANSFER FLUIDS; MOLTEN-SALTS; PLANTS;

D O I：

10.1016/j.compositesa.2016.11.026

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ternary carbonate of Li2CO3-Na2CO3-K2CO3 used as thermal energy systems for concentrating solar power plants is originally modified by tetra-needle like ZnO whiskers via solution-evaporation method with objective of enhancing thermal properties for high-temperature heat transfer. Results demonstrated that enhancement of T-ZnOw on the thermal properties of ternary carbonate is mainly reflected on the improvement of thermal conductivity. Enhancement of thermal conductivity is directly related to the microstructure of T-ThOw and the largest value is 4.483 W/(m.degrees C). Enhancement of specific heat is closely associated with specific surface area of T-ZnOw and the maximum is 1.357 J/(g.degrees C) for solid and 1.665 J/(g.degrees C) for liquid. In addition, there is no significant changes in melting point, specific heat and thermal conductivity after 30 melting/freezing circles. It can be speculated that prepared composites with superior thermal storage capacity and cyclic stability will exhibit extensive potential in concentrating solar power plants. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：177 / 184

页数：8

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