QUANTIFICATION OF AVAILABLE SOLAR IRRADIATION ON ROOFTOPS USING ORTHOPHOTOGRAPH AND LIDAR DATA
Chanikarn Yimprayoon, Mojtaba Navvab
Residential buildings can play a significant role in deploying solar technology using their rooftops. However, shading from trees and surroundings can limit the access of solar radiation to the building. To correctly quantify the effect of shading cast by trees and nearby buildings for medium to large projects, the method of utlizing Light Detection And Ranging (LiDAR) and orthophotograph maps to measure obstruction heights and locations for three-dimensional modeling is presented. Rooftop shadows from houses in a neighborhood are simulated and analyzed to quantify the amount of solar reduction due to the surroundings at the present time and in the future.
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