PV Modules: Bifacial technology

go PV Introduction Albedo The albedo of a surface is the fraction of the incident sunlight that the surface reflects. Important measure it. Necessary for the characterization of the results. Albedo may change from season to season: snow during the winter or different vegetation on the ground. Method for measuring albedo described in ASTM E1918-16 "Standard Test method for measuring solar reflectance of horizontal and low-sloped surfaces in the field”. Measurements are not even constant during the day. Constant values (average from measurements) are normally considered for calculations. Monthly values can be considered as well. incident light diffuse reflection specular reflection Source: GIS stackexchange Field Testing Meets Modeling: Validated Data on Bifacial Solar Performance. Kyumin Lee, Array Technologies. BiFi July 2020. Albedo mounting plate H R S tecnalia Inspiring Business Upper screen (white) Pyranometers Lower screen (white) Equator D Mast (black) Albedo measurement construction source: Kipp & Zonen GoPV Project | 1st TRAINING COURSES TECHNICAL FOCUS ON FUTURE SOLAR PV SYSTEMS October 26-29th 2020

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