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

Zhaoli Zhang, Yanping Yuan, Liping Ouyang, Haiquan Zhang, Xiaoling Cao, Liangliang Sun, Patrick Phelan

Research output: Contribution to journalArticle

5 Citations (Scopus)

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 languageEnglish (US)
Pages (from-to)177-184
Number of pages8
JournalComposites Part A: Applied Science and Manufacturing
Volume93
DOIs
StatePublished - Feb 1 2017

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Carbonates
Thermal energy
Energy storage
Solar energy
Thermal conductivity
Thermodynamic properties
Solar power plants
Specific heat
Temperature
Freezing
Specific surface area
Needles
Melting point
Evaporation
Melting
Heat transfer
Microstructure
Composite materials
Liquids

Keywords

  • Cyclic stability
  • Ternary carbonate
  • Tetra-needle like ZnO whiskers
  • Thermal properties enhancement

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials

Cite this

Thermal properties of ternary carbonate/T-ZnOw for thermal energy storage in high-temperature concentrating solar power systems. / Zhang, Zhaoli; Yuan, Yanping; Ouyang, Liping; Zhang, Haiquan; Cao, Xiaoling; Sun, Liangliang; Phelan, Patrick.

In: Composites Part A: Applied Science and Manufacturing, Vol. 93, 01.02.2017, p. 177-184.

Research output: Contribution to journalArticle

Zhang, Zhaoli ; Yuan, Yanping ; Ouyang, Liping ; Zhang, Haiquan ; Cao, Xiaoling ; Sun, Liangliang ; Phelan, Patrick. / Thermal properties of ternary carbonate/T-ZnOw for thermal energy storage in high-temperature concentrating solar power systems. In: Composites Part A: Applied Science and Manufacturing. 2017 ; Vol. 93. pp. 177-184.
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