| Titre : |
High irradiance low temperature : Temperature control in accelerated outdoor weathering |
| Type de document : |
texte imprimé |
| Auteurs : |
Florian Feil, Auteur |
| Année de publication : |
2020 |
| Article en page(s) : |
p. 42-47 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Essais accélérés (technologie)
Miroirs
Rayonnement solaire
Revêtements -- Effets du climat:Peinture -- Effets du climat
Température -- Contrôle
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Weathering with concentrated solar radiation enables material tests under natural conditions but nevertheless with high acceleration factors. However, high surface temperatures often limit the application. New mirror technologies allow to limit and control the test temperatures. It is also possible to predict the surface temperature based on mirror combination and on sample absorption (colour). |
| Note de contenu : |
- State of the art
- "Cool-mirror" technology
- Hybrid systems
- Temperature
- Calculation of surface temperatures
- Fig. 1 : Schematic representation of a Fresnel-mirror solar concentration device
- Fig. 2 : Tracking Fresnel-mirror solar concentration device ("EMMAqua", 10 mirrors, with spray nozzles) : target board with test specimen
- Fig. 3 : Tracking mirror device with twenty focused cold mirrors ("UA-EMMA", ultra accelerated-EMMA) and a target area of approximately 15 cm X 91 cm
- Fig. 4 : Tracking mirror device "16 CM UA-EMMAqua-hybrid" with sixteen cold mirrors and 4 traditional mirrors
- Fig. 5 : Spectral reflection of the coloured coated metal panels
- Fig. 6 : Temperature course of a representative day (June 3, 2019) of the surface temperatures of the green samples in all exposures
- Fig. 7 : Maximum temperatures of all samples of all exposures on April 19, 2019
- Fig. 8 : Absolute calculated spectral irradiance at the time of the maximum temperature on May 4, 2019 for all mirror combinations
- Table 1 : Average daily maximum surface temperatures with standard deviation in the measurement period from April 9 to June 19, 2019
- Table 2 : Calculated (cal.) and measured (me.) maximum surface temperatures (April 19, 2019) |
| En ligne : |
https://drive.google.com/file/d/1OYO7U65aBaXeCVVYLPBbu1iCn_42Nd8E/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34908 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 10 (10-11/2020) . - p. 42-47
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High irradiance low temperature in EUROPEAN COATINGS JOURNAL (ECJ), N° 10 (10-11/2020)
