6 documents found, page 1 of 1
Operating Parabolic Troughs with Molten Salt: Solar field Optimisation and Tern...
Krüger, Dirk; Detzler, Raphael; Schmitz, Mark; Reisch, Isabell; Jung, Christian; Bonk, Alexander; Hanke, Andrea; Horta, Pedro; Martins, PaulaVarious test results from operation since October 2021 at the Évora Molten Salt Platform (EMSP) with ternary HTF-salt are discussed. A focus is on solar pre-heating of receivers, collector improvements and testing of the ternary salt for its physical properties and its chemical stability for operation up to 500 °C.
Corrosion behaviour of FE and NI-based alloys in solar salt and corrosion mitig...
Oskay, Ceyhun; Meißner, Tobias; Grégoire, Benjamin; Burek, B.O.; Schlereth, Clara; Bonk, Alexander; Bik, Maciej; Solimani, Ali; Galetz, MathiasABSTRACT: This study investigated the corrosion behaviour of commercial and model Fe- and Ni-based alloys in solar salt at 600°C. The thermal decomposition of nitrate salts led to an increasing concentration of oxidizing agents in the salt melt and thus to a higher corrosion rate. For Fe-based alloys, the oxide scales contained a Na- and Fe-rich outer layer, followed by an inner Cr-rich layer and nitridation as...
Corrosion behaviour of FE and NI-based alloys in solar salt and corrosion mitig...
Oskay, Ceyhun; Meißner, Tobias; Grégoire, Benjamin; Burek, B.O.; Schlereth, Clara; Bonk, Alexander; Bik, Maciej; Solimani, Ali; Galetz, MathiasABSTRACT: This study investigated the corrosion behaviour of commercial and model Fe- and Ni-based alloys in solar salt at 600°C. The thermal decomposition of nitrate salts led to an increasing concentration of oxidizing agents in the salt melt and thus to a higher corrosion rate. For Fe-based alloys, the oxide scales contained a Na- and Fe-rich outer layer, followed by an inner Cr-rich layer and nitridation as...
Dynamic corrosion testing of metals in solar salt for concentrated solar power
Sutter, Florian; Oskay, Ceyhun; Galetz, Mathias Christian; Cunha Diamantino, Teresa; Pedrosa, Fátima; Figueira, Isabel; Glumm, Stefan; Bonk, AlexanderABSTRACT: Potassium nitrate and sodium nitrate in mixing proportion of KNO3-NaNO3 40-60 wt% (also called solar salt) has been successfully used for over a decade as heat storage medium for concentrated solar power parabolic-trough collector plants at temperatures up to 400 degrees C. At temperatures of 560 degrees C, reached in state-of-the-art solar tower systems, corrosion of metallic components in contact wi...
Molten salt chemistry in nitrate salt storage systems: Linking experiments and ...
Sotz, Veronika; Bonk, Alexander; Forstner, Jochen; Bauer, ThomasSensible heat storage in molten nitrate salts is a key technology when it comes to thermal energy storage in combination with concentrating solar power (CSP) plants. Currently, a mixture of sodium and potassium nitrate called Solar Salt is used at temperatures between 280 and 560 °C. Our research approaches comprise an improvement of Solar Salt stability at temperatures above 560 °C, which comes along with a br...
Dynamic corrosion testing of metals in solar salt for concentrated solar power
Sutter, Florian; Oskay, Ceyhun; Galetz, Mathias Christian; Cunha Diamantino, Teresa; Pedrosa, Fátima; Figueira, Isabel; Glumm, Stefan; Bonk, AlexanderABSTRACT: Potassium nitrate and sodium nitrate in mixing proportion of KNO3-NaNO3 40-60 wt% (also called solar salt) has been successfully used for over a decade as heat storage medium for concentrated solar power parabolic-trough collector plants at temperatures up to 400 degrees C. At temperatures of 560 degrees C, reached in state-of-the-art solar tower systems, corrosion of metallic components in contact wi...