Abstract
In recent years, lithium containing salts have been studied for thermal energy storage (TES) systems applications, because of their optimal thermophysical properties. In solar power plants, lithium is seen as a way to improve the properties of molten salts used today. Lithium nitrate is a good candidate for sensible heat storage, due to its ability to increase the salt mixture's working temperature range. In the present research, thermophysical properties characterization of lithium nitrate containing salts, produced in Chile, have been carried out. Corrosion evaluations of carbon and low chromium steels were performed at 390°C for 1000 hours. Thermophysical properties of the salt mixtures, such as thermal stability and heat capacity, were measured before and after corrosion tests. Chemical composition of the salts was also determined and an estimation of Chilean production costs is reported. Results showed that purity, thermal stability and heat capacity of the salts were reduced, caused by partial thermal decomposition and incorporation of corrosion products from the steel.
Original language | American English |
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Number of pages | 6 |
DOIs | |
State | Published - 31 May 2016 |
Event | 21st International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2015 - Cape Town, South Africa Duration: 13 Oct 2015 → 16 Oct 2015 |
Conference
Conference | 21st International Conference on Concentrating Solar Power and Chemical Energy Systems, SolarPACES 2015 |
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Country/Territory | South Africa |
City | Cape Town |
Period | 13/10/15 → 16/10/15 |
Bibliographical note
Publisher Copyright:© 2016 Author(s).
NREL Publication Number
- NREL/CP-5500-65775
Keywords
- concentrating solar power
- corrosion
- CSP
- lithium nitrate
- thermal energy storage (TES)
- thermophysical properties