Synthesis of Al-25 wt% Si@Al2O3@Cu microcapsules as phase change materials for high temperature thermal energy storage

2019 ◽  
Vol 191 ◽  
pp. 141-147 ◽  
Author(s):  
Nan Sheng ◽  
Chunyu Zhu ◽  
Hiroki Sakai ◽  
Tomohiro Akiyama ◽  
Takahiro Nomura
Keyword(s):  
High Temperature ◽  
Energy Storage ◽  
Phase Change ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Phase Change Materials

Micro encapsulated & form-stable phase change materials for high temperature thermal energy storage

2018 ◽  
Vol 217 ◽  
pp. 212-220 ◽  
Author(s):  
Guanghui Leng ◽  
Geng Qiao ◽  
Zhu Jiang ◽  
Guizhi Xu ◽  
Yue Qin ◽  
...  
Keyword(s):  
High Temperature ◽  
Energy Storage ◽  
Phase Change ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Phase Change Materials ◽  
Stable Phase

scholarly journals Green chemistry solutions for sol–gel micro-encapsulation of phase change materials for high-temperature thermal energy storage

2018 ◽  
Vol 5 ◽  
pp. 8 ◽  
Author(s):  
Maria Dolores Romero-Sanchez ◽  
Radu-Robert Piticescu ◽  
Adrian Mihail Motoc ◽  
Francisca Aran-Ais ◽  
Albert Ioan Tudor
Keyword(s):  
High Temperature ◽  
Energy Storage ◽  
Phase Change ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Phase Change Materials ◽  
Waste Heat ◽  
Sol Gel ◽  
Maximum Temperature ◽  
Support Materials

NaNO3 has been selected as phase change material (PCM) due to its convenient melting and crystallization temperatures for thermal energy storage (TES) in solar plants or recovering of waste heat in industrial processes. However, incorporation of PCMs and NaNO3 in particular requires its protection (i.e. encapsulation) into containers or support materials to avoid incompatibility or chemical reaction with the media where incorporated (i.e. corrosion in metal storage tanks). As a novelty, in this study, microencapsulation of an inorganic salt has been carried out also using an inorganic compound (SiO2) instead of the conventional polymeric shells used for organic microencapsulations and not suitable for high temperature applications (i.e. 300–500 °C). Thus, NaNO3 has been microencapsulated by sol–gel technology using SiO2 as shell material. Feasibility of the microparticles synthetized has been demonstrated by different experimental techniques in terms of TES capacity and thermal stability as well as durability through thermal cycles. The effectiveness of microencapsulated NaNO3 as TES material depends on the core:shell ratio used for the synthesis and on the maximum temperature supported by NaNO3 during use.

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