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| Characteristics of Highly Accelerated Weathering Test System with Sun Tracking Concentrated Device |
| Received:March 28, 2019 Revised:April 10, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2019.08.003 |
| KeyWord:cold light reflector concentrator solar spectrum temperature and humidity |
| Author | Institution |
| ZENG Wen-bo |
China National Electric Apparatus Research Institute Ltd, Guangzhou , China |
| ZHANG Xiao-dong |
China National Electric Apparatus Research Institute Ltd, Guangzhou , China |
| WANG Shou-he |
China National Electric Apparatus Research Institute Ltd, Guangzhou , China |
| CHEN Kai-wen |
China National Electric Apparatus Research Institute Ltd, Guangzhou , China |
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| Abstract: |
| Objective To research on characteristics of outdoor highly accelerated photo-aging system based on "cold light" reflector. Methods Key performance data of the system prototype were obtained through the monitoring technology of atmospheric environmental conditions. Results The "cold light" reflector had a reflectance of over 90% in the wavelength range of 295 to 700 nm, which enhanced the reflected solar spectrum of the system prototype in this wavelength range, and obtained 3.5 times of direct solar radiation intensity in the 310 nm band; concentrated solar irradiation was distributed uniformly, and the average irradiation intensity at the target plate could reach up to 0.655 W/(m2.nm), the standard deviation was 2.6%. The surface temperature of the sample during the day did not exceed that of the directly exposed one by 10 ℃. The air humidity around the sample was close to the atmospheric relative humidity. The air relative humidity around the sample could be controlled through the spray system to simulate various natural climate environments. Conclusion After comparing the solar spectrum, irradiation intensity and temperature and humidity of the system, it indicates that the system enhances the UV irradiation intensity and effectively controls the temperature and humidity of the test sample. The research can prove data support for study on aging mechanism of natural accelerated test and correlation of the system. |
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