Albedo effect defines the amount of sunlight reflects back from the ground surface or any object. The albedo of a surface corresponds to the ratio between the reflected light and the incident light. It basically measures the amount of reflection of light back in the atmosphere after hitting the surface. Albedo is high for “white” object surface and low for the “black” object surface. So why is this important for Solar Panels & especially, the bifacial solar panels ?!? Bi-Facial solar panels have solar cells on both side of the panel, meaning in addition to the lights reaching the panels directly from the sun, they also produce energy from the light reflected from the surface that the panels are installed on. This would make surface material & color critical on the amount of energy that a bi-facial panel could produce.
To achieve the highest Bi-Facial Gain, the installation of the module is dependent primarily on three factors; the “albedo”, “tilted angle” and “elevation of the module”. These could increase the efficiency of the panel. Albedo effect makes the more impact on the bifacial solar cell as the panel also produces power from the reflected light to the backside of the panel. This means the real output of the bifacial solar panel varies with the reflectivity of the surface it is installed on. This means sometimes just having a color/type of sand on the ground could definitely affect the production. ——————–***——————
Source: http://ow.ly/MG5I50uw2th & LG BiFacial Design Guide
Photo: LG BiFacial Design Guide
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‘All rights go to the author of the news and image mentioned above’
Date: Jun 04, 2019 @ 09:35
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