|
|||||
|
|
Thermal property characterization of a low melting-temperature ternary nitrate salt mixture for thermal energy storage systems |
|
| Authors: | CY Zhao ZG Wu |
| Affiliation: | a School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China b School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China c School of Engineering, University of Warwick, Coventry CV4 7AL, UK |
| Abstract: | Molten salts have better thermal properties than synthetic mineral oil, and hence they can be directly used as heat transfer fluids in solar power plants, but in practice their direct applications as heat transfer fluids are constrained due to their high freezing temperature points. In this paper, a class of ternary nitrate salt mixtures consisting of 50-80 wt% KNO3, 0-25 wt% LiNO3 and 10-45 wt% Ca(NO3)2 were processed and tested. Experimental results indicated that some mixtures within this range exhibited excellent thermal properties, such as a low melting point (<100 °C), robust reliability, high-temperature stability (upto 500 °C) and a low viscosity (e.g.,<5 cP at 190 °C). Apart from these desirable thermo-physical properties, the manufacturing cost of these novel inorganic salts HTFs (Heat Transfer Fluids) is considerably lower than those of the existing commercial heat transfer fluids (HTFs). |
| Keywords: | Heat transfer fluid Molten salts Ternary salt Solar energy Thermal storage |
| 本文献已被 ScienceDirect 等数据库收录！ | |