Molten Salts for Sensible Thermal Energy Storage: A Review and an Energy Performance Analysis

A comprehensive review of different thermal energy storage materials for concentrated solar power has been conducted. Fifteen candidates were selected due to their nature, thermophysical properties, and economic impact. Three key energy performance indicators were defined in order to evaluate the pe...

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Bibliographic Details
Published in:Energies (Basel) 2021-02, Vol.14 (4), p.1197
Main Authors: Caraballo, Adrián, Galán-Casado, Santos, Caballero, Ángel, Serena, Sara
Format: Article
Language:English
Subjects:
Carbon dioxide
concentrated solar power
Decomposition
Economic impact
Efficiency
Electricity
Energy storage
Heat conductivity
Heat transfer
High temperature
Humidity
Impact analysis
Materials selection
Molten salts
nanofluids
Nitrates
Potassium
Salts
sensible heat storage
Solar energy
Solar power
Thermal energy
thermal energy storage
Thermophysical properties
Viscosity
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Summary:A comprehensive review of different thermal energy storage materials for concentrated solar power has been conducted. Fifteen candidates were selected due to their nature, thermophysical properties, and economic impact. Three key energy performance indicators were defined in order to evaluate the performance of the different molten salts, using Solar Salt as a reference for low and high temperatures. The analysis provided evidence that nitrate-based materials are the best choice for the former and chloride-based materials are best for the latter instead of fluoride and carbonate-based candidates, mainly due to their low cost.
ISSN:1996-1073
1996-1073
DOI:10.3390/en14041197