| Autor: |
Lahlou, Radia, Armstrong, Peter R., Calvet, Nicolas, Shamim, Tariq |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2017, Vol. 1850 Issue 1, p1-8, 8p, 4 Diagrams, 2 Charts |
| Abstrakt: |
Nitrate salt vapor deposition on the reflecting surface of a secondary concentrator placed on top of an open molten salt tank at 500 °C is investigated using a lab-scale setup over an 8h-exposure cycle. Deposition, consisting of mostly spherical particles, is characterized in terms of chemical composition using energy dispersive X-ray spectroscopy. The corresponding specular reflectance degradation both temporary (before washing off the salt deposits) and permanent (residual reflectance loss after cleaning), is measured at different incidence angles and at reference points located at different heights. Reflectance drop due to salt deposits is compared to the one resulting from dust deposition. Long-term reflectance degradation by means of corrosion needs to be further studied through suitable accelerated aging tests. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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