High Temperature Properties of Molten Nitrate Salt for Solar Thermal Energy Storage Application
Bin Mohammad, M; Brooks, G; Rhamdhani, MA
| HERO ID | 3858054 |
|---|---|
| Year | 2017 |
| Title | High Temperature Properties of Molten Nitrate Salt for Solar Thermal Energy Storage Application |
| Book Title | Minerals Metals & Materials Series |
| Authors | Bin Mohammad, M; Brooks, G; Rhamdhani, MA |
| Page Numbers | 531-539 |
| Abstract | Molten alkali nitrates are used commercially as thermal storage fluids (HTF) for solar thermal electricity generation. Their range of operation is limited by the thermal stability and this limits the energy (steam-Rankine cycle) efficiency of these processes. In this study, the effect of atmosphere on the thermal stability of nitrates was investigated using simultaneous thermal analysis techniques (STA). The use of oxygen (O-2) as a blanket gas was found to delay the decomposition point of the ternary NaNO3-KNO3-LiNO3 (13.23-57.14-29.63 weight ratio) mixture by 55 degrees C. By which operating range will increase 65 degrees C more compared to the binary solar salt. Higher heating rates increased the decomposition point but had less effect on premelting and melting properties. Nitrogen monoxide, and O-2 evolution after melting indicates concurrent reversible reactions. Similar phenomena were observed for single and binary nitrates. The eutectic melting point of ternary nitrate obtained from the STA agreed well with FactSage eutectic composition prediction. |
| Doi | 10.1007/978-3-319-51091-0_52 |
| Wosid | WOS:000404101200052 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Journal:APPLICATIONS OF PROCESS ENGINEERING PRINCIPLES IN MATERIALS PROCESSING, ENERGY AND ENVIRONMENTAL TECHNOLOGIES 2367-1181 |
| Is Public | Yes |
| Keyword | Concentrated solar power; Heat transfer fluids; Thermal analysis; LiNO3; NaNO3; KNO3 |