Superior Latent Heat Eutectic Salt Na2CO3-Li2CO3-LiF for Thermal Energy Storage: Preparation and Performance Investigation

LI Weiwei; MIAO Qi; ZHANG Yelong; DING Hongliang; YANG Sa; LAI Yuan; FENG Daili; DING Yulong; JIN Yi; TAN Linghua

doi:10.1007/s11630-024-1919-y

2024 , Vol. 33 >Issue 2: 501 - 508

DOI: https://doi.org/10.1007/s11630-024-1919-y

Superior Latent Heat Eutectic Salt Na₂CO₃-Li₂CO₃-LiF for Thermal Energy Storage: Preparation and Performance Investigation

LI Weiwei ,
MIAO Qi ,
ZHANG Yelong ,
DING Hongliang ,
YANG Sa ,
LAI Yuan ,
FENG Daili ,
DING Yulong ,
JIN Yi ,
TAN Linghua

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1. School of Chemistry and Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, China
2. National Special Superfine Powder Engineering Research Center, Nanjing University of Science and Technology, Nanjing 210094, China
3. Nanjing Jinhe Energy Material Co., Ltd, Nanjing 210047, China
4. School of Chemical Engineering, University of Birmingham, Birmingham B15 2TT, UK
5. School of Energy & Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China

Online published: 2024-03-07

Supported by

JIN Yi would like to thank the funding support from the National Key Research and Development Plan of China (2018YFA0702300). TAN Linghua would like to thank National Natural Science Foundation of China (NSFC 2151802156), Natural Science Foundation of Jiangsu Province (BK20181302) and the Fundamental Research Funds for the Central Universities (30920041107). DING Yulong would like to thank UK Engineering and Physical Sciences Research Council (EPSRC) for partial support to this project (Grants EP/T022981/1, EP/S032622/1 and EP/P003435/1), as well as the British Council (2020-RLWK12-10478 and 2019-RLWK11-10724).

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2024

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Abstract

In this paper, a novel ternary eutectic salt Na₂CO₃-Li₂CO₃-LiF was designed and investigated for concentrated solar power (CSP). The FactSage software was used to predict the composition and eutectic point of Na₂CO₃-Li₂CO₃-LiF. The microstructure, thermophysical properties, and thermal stability of eutectic salts were experimentally measured using various analytical methods. With a mass ratio of 57%:32%:11%, the eutectic salt exhibited excellent thermal storage properties with a fusion enthalpy of 413 J/g and a melting point of 426.8°C. The excellent thermal stability of the eutectic salt was reflected by a weight loss of only 0.8% at 600°C.

Key words： phase change materials; ternary eutectic salt; latent heat; thermal stability

Cite this article

LI Weiwei , MIAO Qi , ZHANG Yelong , DING Hongliang , YANG Sa , LAI Yuan , FENG Daili , DING Yulong , JIN Yi , TAN Linghua . Superior Latent Heat Eutectic Salt Na₂CO₃-Li₂CO₃-LiF for Thermal Energy Storage: Preparation and Performance Investigation[J]. Journal of Thermal Science, 2024 , 33(2) : 501 -508 . DOI: 10.1007/s11630-024-1919-y

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