التفاصيل البيبلوغرافية
| العنوان: |
Aerosols Attenuating the Solar Radiation Collected by Solar Tower Plants: The Horizontal Pathway at Surface Level. |
| المؤلفون: |
Elias, Thierry, Ramon, Didier, Dubus, Laurent, Bourdil, Charles, Cuevas-Agulló, Emilio, Zaidouni, Taoufik, Formenti, Paola |
| المصدر: |
AIP Conference Proceedings; 2016, Vol. 1734 Issue 1, p1-8, 8p, 1 Diagram, 4 Graphs |
| مصطلحات موضوعية: |
SOLAR radiation, SOLAR power plants, SOLAR collectors, HELIOSTATS, ATMOSPHERIC boundary layer |
| مستخلص: |
Aerosols attenuate the solar radiation collected by solar tower plants (STP), along two pathways: 1) the atmospheric column pathway, between the top of the atmosphere and the heliostats, resulting in Direct Normal Irradiance (DNI) changes; 2) the grazing pathway close to surface level, between the heliostats and the optical receiver. The attenuation along the surface-level grazing pathway has been less studied than the aerosol impact on changes of DNI, while it becomes significant in STP of 100 MW or more. Indeed aerosols mostly lay within the surface atmospheric layer, called the boundary layer, and the attenuation increases with the distance covered by the solar radiation in the boundary layer. In STP of 100 MW or more, the distance between the heliostats and the optical receiver becomes large enough to produce a significant attenuation by aerosols. We used measured aerosol optical thickness and computed boundary layer height to estimate the attenuation of the solar radiation at surface level at Ouarzazate (Morocco). High variabilities in aerosol amount and in vertical layering generated a significant magnitude in the annual cycle and significant inter-annual changes. Indeed the annual mean of the attenuation caused by aerosols over a 1-km heliostatreceiver distance was 3.7% in 2013, and 5.4% in 2014 because of a longest desert dust season. The monthly minimum attenuation of less than 3% was observed in winter and the maximum of more than 7% was observed in summer. [ABSTRACT FROM AUTHOR] |
|
Copyright of AIP Conference Proceedings is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
