| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials and Chemistry for Molten Salt Systems
|
| Presentation Title |
Thermophysical-properties Characterization of a Quaternary Novel Salt based on Na+/K+ and NO3-/Cl- System |
| Author(s) |
Matias Castro Quijada, Daniel Faundez, Carlos Lopez, Alvaro Videla |
| On-Site Speaker (Planned) |
Matias Castro Quijada |
| Abstract Scope |
The energy efficiency of the CSP Tower Plants (CSPTPs) can be improved by using a HTF (Heat Transfer Fluid) that works in a higher thermal range than current solar salts. The so-called 2nd CSPTPs generation, with HTF based on Sodium-Potassium nitrates, has a regular thermal range of operation (520-850K). Recent research for the 3rd CSPTPs generation has identified chlorides salts (670-1070K) as an attractive alternative HTF to solar salts. The present work research on a transitional path shifting from a 100% nitrates solar mixture (36:64 molar of K:Na) towards a 50% nitrates & 50% chlorides mixture (50:50 molar of K:Na). Along this presentation, results are shown regarding the variation of properties such as melting temperature, degradation temperature, HTF viscosity, and energy density as function of chloride addition to the solar salt. The laboratory characterization includes DSC, TGA, viscosity and density measurements by standard methods. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |