Sunlight Intensity: Measuring for Window Facing South

AI Thread Summary
To measure sunlight intensity for a south-facing vertical window, use the hourly W/m^2 output from a research center as a baseline, particularly the noon value for insolation. Adjust this baseline by calculating the angle of sunlight incidence throughout the day, as the angle changes relative to the window's orientation. This involves integrating the amount of sunlight that penetrates the window based on its angle to the incoming solar radiation. The process is straightforward and relies on basic mathematical adjustments to account for the window's vertical position. Accurate measurements can help optimize energy efficiency in buildings.
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A research center measures sunlight intensity every hour every day. The measuring device stands on flat ground and therefore measures light accordingly. The output is W/m^2. The problem is that I need to utilize this value for a vertical window on a wall facing south. How can I best do this?
 
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Take the value from the research center at noon as the baseline for the insolation. Then just do the math to integrate the amount of sunlight that makes it through the window at each time of the day (as the angle of the window to the normal insolation angle changes). Seems pretty straightforward...
 
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