Abstract
Low melting point thermal energy storage (TES) materials have been proposed in the last years to reduce the storage cost in concentrating solar power (CSP) technology. One of the most interesting additive due to the enhancement in thermal properties is lithium nitrate. However, there is a lack of dynamic corrosion tests to simulate real operation conditions in CSP plants. In this work, we present a dynamic reactor set up where a mixture of 30 wt.% LiNO3 + 57 wt.% KNO3 + 13 wt.%. NaNO3 is moved through a mechanical stirrer obtaining a lineal speed of 0.30 m/s. A commercial carbon steel A516 was tested as container material at 390 °C during 1000 h. Fe2O3 and Fe3O4 were obtained as the main corrosion products by scanning electron microscopy (SEM) and x-ray diffraction (XRD) with a metallographic corrosion rate of 0.015 mm/year.
| Original language | English |
|---|---|
| Article number | 4305 |
| Pages (from-to) | 4305 |
| Number of pages | 1 |
| Journal | Applied Sciences |
| Volume | 10 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 1 Jun 2020 |
Keywords
- Dynamic corrosion
- Thermal energy storage
- Concentrated solar power
- Lithium nitrate salts
Project and Funding Information
- Funding Info
- The authors would like to thank the Catalan Government for the quality accreditation given_x000D_ to their research group (GREiA 2017 SGR 1537). GREiA is certified agent TECNIO in the category of technology_x000D_ developers from the Government of Catalonia.
