METEOROLOGY – OLAR RADIATION CALCULATOR
Tilted Surface Irradiance
A precise tool.
What is the Tilted Surface Irradiance & How does it work?
Solar radiation on a tilted surface is influenced by the angle of tilt and azimuth relative to the sun’s position. The irradiance received can be calculated using models that account for these angles.
The formula used here considers the solar declination, hour angle, and the cosine of the angle between the surface normal and the solar vector. This allows for a more accurate representation of the irradiance on tilted surfaces compared to horizontal surfaces.
The formula used here considers the solar declination, hour angle, and the cosine of the angle between the surface normal and the solar vector. This allows for a more accurate representation of the irradiance on tilted surfaces compared to horizontal surfaces.
I = I_0 cos(theta) + I_{sc} sin(theta)
I = Irradiance on tilted surface, I_0 = Direct irradiance, I_{sc} = Diffuse irradiance, theta = Angle between the surface normal and solar vector
Parameters
Result
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Frequently Asked Questions
What is solar irradiance?
Solar irradiance is the power per unit area received from the sun. It’s measured in watts per square meter (W/m²).
How does surface tilt affect solar irradiance?
Surface tilt affects how much sunlight a surface receives. A tilt that aligns with the sun’s path maximizes irradiance.
What is solar declination?
Solar declination is the angle between the Earth’s equatorial plane and a line connecting the Earth to the Sun. It varies throughout the year.
How do I calculate the hour angle?
The hour angle is calculated based on the time of day and the longitude of the location. It helps determine the position of the sun in the sky.
Why is this calculator useful for meteorology?
This calculator is useful for meteorologists to understand solar energy distribution, which impacts weather patterns and climate studies.
Can I use this calculator for any surface orientation?
Yes, you can adjust the tilt and azimuth angles to represent various surface orientations facing different directions.
What is the difference between irradiance on a horizontal and tilted surface?
Horizontal surfaces receive less irradiance when the sun is low in the sky. Tilted surfaces can capture more sunlight by aligning with the solar angle.
Results are for informational purposes only and do not constitute professional advice.