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ADF Formula:
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The Average Daylight Factor (ADF) is a metric used to quantify the amount of natural daylight available in a space, calculated as the mean of Daylight Factor (DF) values measured at various points. It is particularly important in environments designed for children to ensure adequate natural lighting.
The calculator uses the ADF formula:
Where:
Explanation: The equation calculates the average of multiple DF measurements to provide a comprehensive assessment of daylight distribution in a space.
Details: Proper daylighting is crucial for children's spaces as it supports visual comfort, regulates circadian rhythms, enhances mood and concentration, and contributes to overall wellbeing and learning environment quality.
Tips: Enter comma-separated Daylight Factor values (in percentage). The calculator will automatically count the number of points and compute the average. Ensure all values are valid numbers greater than 0.
Q1: What is a good ADF value for children's spaces?
A: Generally, an ADF of 2-5% is considered good for most children's environments, though specific requirements may vary based on space function and regulations.
Q2: How many measurement points are typically needed?
A: The number of points depends on room size and complexity. For accurate results, measure at multiple locations representing different areas of the space.
Q3: When should DF measurements be taken?
A: Measurements should be taken under standard overcast sky conditions to ensure consistent and comparable results across different locations.
Q4: Are there limitations to ADF calculation?
A: ADF provides an average value and may not capture local variations in daylight distribution. Additional analysis may be needed for complex spaces.
Q5: How does ADF relate to lighting design for children?
A: ADF helps designers ensure adequate natural lighting, reduce reliance on artificial lighting, and create healthier, more sustainable learning environments for children.