文献类型：期刊文献

英文题名：Improvement of carbonate thermophysical properties by high-temperature melting: a fluid used for heat transfer in high-temperature CSP device

作者：Mao, Shuai An, Zhoujian Du, Xiaoze Ding, Yong Zhang, Dong Fu, Jian

第一作者：Mao, Shuai

通信作者：An, ZJ[1];Du, XZ[1];An, ZJ[2];An, ZJ[3]

机构：[1]Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Peoples R China;[2]Guizhou Inst Technol, Sch Aerosp Engn, Guiyang 550025, Peoples R China;[3]Shouhang High Tech Energy Technol Co Ltd, Jiuquan 735000, Peoples R China

第一机构：Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Peoples R China

通信机构：corresponding author), Lanzhou Univ Technol, Sch Energy & Power Engn, Lanzhou 730050, Peoples R China;corresponding author), Guizhou Inst Technol, Sch Aerosp Engn, Guiyang 550025, Peoples R China;corresponding author), Shouhang High Tech Energy Technol Co Ltd, Jiuquan 735000, Peoples R China.|贵州理工学院;

年份：2026

外文期刊名：JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY

收录：;EI(收录号：20261020217902);Scopus(收录号：2-s2.0-105031813802);WOS:【SCI-EXPANDED(收录号:WOS:001704110300001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (52206087; 52130607); the China Postdoctoral Science Foundation (2025M770576); the Youth Doctor Foundation Project of Gansu Provincial Education Department (2025QB-027); the Lanzhou Youth Science and Technology Talent Innovation Project (2024-QN-18); the Science and Technology Project of Gansu province (25CXGA058); the Industrial Support Plan Project of Gansu Provincial Education Department (2025CYZC-034); the Guizhou Provincial Basic Research Program(Natural Science) (MS[2025]189); the Doctoral Research Funds of Lanzhou University of Technology (061907); the Red Willow Excellent Youth Project of Lanzhou University of Technology and the Young Faculty Interdisciplinary Research Incubation Program of Lanzhou University of Technology.

语种：英文

外文关键词：High-temperature melting method; Nanofluids; Viscosity; Thermal storage performance

摘要：Nanofluids obtained by the incorporation of nanoparticles into ternary carbonates be capable of enhancing the low heat transfer and the capacity for thermal storage as well as the poor fluidity of carbonate. In this study, 31.5 mass% Na2CO3-31.5 mass% Li2CO3-37 mass% K2CO3 was used as the ternary carbonate. Nanofluids were prepared utilize the high-temperature melting technique by dispersing nanoparticles of different particle sizes, concentrations, and types in carbonate solution. The thermophysical properties of nanofluids were measured employing X-ray diffractometer, viscosity analyzer, scanning electron microscopy, etc. The findings indicated that among the selected nanoparticles, SiO2 containing 1.0 mass% magnitude of particles of 30 nm was the most effective in enhancing the heat transfer, heat storage, and flow properties of the ternary carbonate. From the fitted curves, the incorporation of SiO2 increased the solid state specific heat capacity with 6.25%, the liquid form by 6.0%. The liquid phase exhibited a 27.8% improvement of thermal conductivity, and the viscosity of nanofluids was below 10 cp with increasing temperature, and the viscosity was less than 3 cp at 500 degrees C. After undergoing 100 h of high-temperature insulation and 100 cycles of thermal shock with large temperature difference, nanofluids exhibited a melting temperature change of only 1.39% and 1.19%, demonstrating excellent initial stability. Subsequent testing will involve extended periods of high-temperature insulation and thermal shock cycles with large temperature differences to ensure this nanofluid truly meets practical application requirements.