Abstract
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-ZnOw and the largest value is 4.483 W/(m⋅°C). Enhancement of specific heat is closely associated with specific surface area of T-ZnOw and the maximum is 1.357 J/(g⋅°C) for solid and 1.665 J/(g⋅°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.
Original language | English (US) |
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Pages (from-to) | 177-184 |
Number of pages | 8 |
Journal | Composites Part A: Applied Science and Manufacturing |
Volume | 93 |
DOIs | |
State | Published - Feb 1 2017 |
Keywords
- Cyclic stability
- Ternary carbonate
- Tetra-needle like ZnO whiskers
- Thermal properties enhancement
ASJC Scopus subject areas
- Ceramics and Composites
- Mechanics of Materials